3 # NOTE: additional options can be passed to git repack by specifying
4 # them after the project name, for example:
8 . @basedir@
/jobd
/gc-util-functions.sh
13 echo "Usage: gc.sh projname [extra-repack-args]" >&2
19 unset GIROCCO_SUPPRESS_AUTO_GC_UPDATE
20 .
"$cfg_basedir/jobd/maintain-auto-gc-hack.sh"
21 .
"$cfg_basedir/jobd/generate-auto-gc-update.sh"
22 GIROCCO_SUPPRESS_AUTO_GC_UPDATE
=1 && export GIROCCO_SUPPRESS_AUTO_GC_UPDATE
25 [ "$cfg_permission_control" != "Hooks" ] ||
umask 000
28 # The pre-receive script creates one ref log file per push but we want them to
29 # be coalesced into one ref log file per day. We are guaranteed that any files
30 # we find to coalesce are NOT currently being written to since they are always
31 # written first as temporary files and then moved into place. We attempt to
32 # transfer the most recent modification time to the coalesced log file which
33 # would step on its mod time if it were being written to directly, but if we
34 # find per-process ref log files then it must be a push project and the only
35 # thing that would write directly to the main per-day log file would be a
36 # mirror project so there's actually no conflict.
37 # Also, if the clock is wonky (or was futzed with) we may have both YYYYMMDD
38 # and YYYYMMDD.gz present in which case combine them into YYYYMMDD
40 [ -d reflogs
] ||
return 0
42 find -L reflogs
-maxdepth 1 -type f
-name "[0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9]" -print |
43 while read -r rname
; do
44 if [ -e "$rname.gz" ]; then
45 if [ -s "$rname" ]; then
46 # Presumably the .gz file must have been created before the non-gz
47 # file since it had to be uncompressed at some point therefore
48 # we need to append the non-gz contents to it but keep the non-gz
49 # contents timestamp so we rename to YYYYMMDD_ which will sort first
50 # and be picked up in the next step if we are interrupted in the middle.
51 # If a YYYYMMDD_ file already exists we append to it and transfer the
52 # timestamp. Finally we transfer the YYYYMMDD_ timestamp to the result
53 # and remove the YYYYMMDD_ temporary file leaving the result uncompressed.
54 if [ -e "${rname}_" ]; then
55 cat "$rname" >>"${rname}_"
56 touch -r "$rname" "${rname}_"
60 mv "$rname" "${rname}_"
62 gzip -d "$rname.gz" </dev
/null
63 [ -e "$rname" ] && ! [ -e "$rname.gz" ]
64 cat "${rname}_" >>"$rname"
65 touch -r "${rname}_" "$rname"
68 # Just remove the empty file to resolve the problem
73 find -L reflogs
-maxdepth 1 -type f
-name "[0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9]_*" -print | LC_ALL
=C
sort |
74 while read -r rname
; do
75 logname
="${rname%%_*}"
76 # If someone's been futzing with the date, the file we want to
77 # append to could already have been compressed, so we just uncompress
78 # it here. The previous block guarantees we do not have both a compressed
79 # and uncompressed version present at the same time.
80 if [ -e "$logname.gz" ]; then
81 gzip -d "$logname.gz" </dev
/null
82 [ -e "$logname" ] && ! [ -e "$logname.gz" ]
84 cat "$rname" >>"$logname"
85 touch -r "$rname" "$logname"
87 if [ -e "$rname" ]; then
89 echo "! [$proj] failed to remove $rname" >&2
90 exit 1 # will only exit subshell created by "|"
96 # Remove any files in reflogs that are older than $cfg_reflogs_lifetime days
98 [ -d reflogs
] ||
return 0
99 exp
="$(( ${cfg_reflogs_lifetime:-1} * 1440 ))"
100 [ $exp -gt 0 ] || exp
=1440
101 [ $exp -le 43200 ] || exp
=43200
102 find -L reflogs
-maxdepth 1 -type f
-mmin "+$exp" -exec rm -f '{}' + ||
:
105 # Compact any reflogs that are not today's UTC date unless a .gz version exists
107 [ -d reflogs
] ||
return 0
108 _td
="reflogs/$(TZ=UTC date '+%Y%m%d')"
109 find -L reflogs
-maxdepth 1 -type f
-name "[0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9]" -print |
110 while read -r rname
; do
111 [ "$rname" != "$_td" ] ||
continue
112 ! [ -e "$rname.gz" ] ||
continue
113 gzip -9 "$rname" </dev
/null
117 # return true if there's more than two objects/pack-<sha>.pack files or
118 # ANY sha-1 files in objects or
119 # there's one or two packs but at least one does not have a normal pack name or
120 # there's at least one pack but not any refs
122 _packs
="$(find -L objects/pack -name "pre-auto-gc-
[12].pack
" -prune -o -name "*.pack
" -type f -print 2>/dev/null | head -n 3)"
123 v_cnt _packscnt
$_packs
124 if [ $_packscnt -gt 2 ]; then
127 if [ $_packscnt -gt 0 ]; then
128 for _pack
in $_packs; do
129 _pack
="${_pack%.pack}"
130 _pack
="${_pack#objects/pack/}"
133 _pack
="${_pack#pack-}"
134 if [ "${#_pack}" -lt 40 ] ||
[ "${_pack#*[!0-9a-fA-F]}" != "$_pack" ]; then
135 # name not exclusively 40 or more hexadecimal digits makes it dirty
140 # abnormal name makes it dirty
146 _objs
=$
(find -L objects
/$octet -name "$octet19*" -type f
-print 2>/dev
/null |
head -n 1 | LC_ALL
=C
wc -l)
147 [ $_objs -eq 0 ] ||
return 0
148 [ $_packscnt -gt 0 ] ||
return 1
149 # we do this check last because it's potentially the most expensive;
150 # at this point we know we do not have any loose objects, but we do
151 # have one or two packs that are named "normally"; empty refs => dirty
155 # combine the input pack(s) into a new pack (or possibly packs if packSizeLimit set)
156 # input pack names are read from standard input one per line delimited by the first
157 # ':', ' ' or '\n' character on the line (which allows gfi-packs to be read directly)
158 # all arguments, if any, are passed to pack-objects as additional options
159 # returns non-zero on failure AND creates .gc_failed in that case
162 combine_packs_std
"$@" ||
{
169 # if the current directory is_gfi_mirror then repack all packs listed in gfi-packs
171 [ -n "$gfi_mirror" ] ||
return 0
172 [ -d objects
/pack
] ||
{ rm -f gfi-packs
; return 0; }
173 progress
"~ [$proj] redeltifying poor quality git fast-import packs"
174 combine_packs
--ignore-missing --no-reuse-delta <gfi-packs
179 # pack any existing loose objects into a new _l.pack file then run prune-packed
180 # note that prune-packed is NOT run beforehand -- the caller must do that if needed
181 # loose objects need not be part of complete commits/trees as --weak-naming is used
182 pack_loose_objects
() {
183 _lpacks
="$(run_combine_packs </dev/null --names --loose --weak-naming --non-empty --all-progress-implied ${quiet:---progress} $packopts)"
184 if [ -n "$_lpacks" ]; then
185 # We need to identify these packs later so we don't combine_packs them
186 for _objpack
in $_lpacks; do
187 rename_pack
"objects/pack/pack-$_objpack" "objects/pack/pack-${_objpack}_l" ||
:
189 git prune-packed
$quiet
193 # combine small packs into larger pack(s)
194 # we avoid any _[lo], keep, bndl or bitmap packs
195 # if the optional argument is non-empty even a single small pack will be redeltad
196 combine_small_packs
() {
199 if [ -n "$1" ] && [ -n "$noreusedeltaopt" ]; then
202 _lpo
="--exclude-no-idx --exclude-keep --exclude-bitmap --exclude-bndl"
203 _lpo
="$_lpo --exclude-sfx _u --exclude-sfx _o --exclude-sfx _l"
204 _lpo
="$_lpo --quiet --object-limit $var_redelta_threshold objects/pack"
206 _cnt
="$(list_packs --count $_lpo)" ||
:
207 test "${_cnt:-0}" -ge $_minsmallpacks
209 [ -n "$_didprogress" ] ||
{
210 progress
"~ [$proj] combining small packs into a single larger pack"
213 _newp
="$(list_packs $_lpo | combine_packs --names $noreusedeltaopt)"
215 # be paranoid and exit the loop if we haven't reduced the number of packs
216 [ $_newc -lt $_cnt ] ||
break
222 # combine small _l packs into larger pack(s) using --weak-naming
223 # we avoid any non _l, keep, bndl or bitmap packs
224 # if the optional 2nd argument is non-empty even a single small pack will be redeltad
225 combine_small_loose_packs
() {
228 if [ -n "$1" ] && [ -n "$noreusedeltaopt" ]; then
231 _lpo
="--exclude-no-idx --exclude-keep --exclude-bitmap --exclude-bndl"
232 _lpo
="$_lpo --exclude-no-sfx _l"
233 _lpo
="$_lpo --quiet --object-limit $var_redelta_threshold objects/pack"
235 _cnt
="$(list_packs --count $_lpo)" ||
:
236 test "${_cnt:-0}" -ge $_minsmallpacks
238 [ -n "$_didprogress" ] ||
{
239 progress
"~ [$proj] combining small loose packs into a single larger pack"
242 _newp
="$(list_packs $_lpo | combine_packs --names --weak-naming $noreusedeltaopt)"
243 # We need to identify these packs later so we don't combine_packs them
244 for _objpack
in $_newp; do
245 rename_pack
"objects/pack/pack-$_objpack" "objects/pack/pack-${_objpack}_l" ||
:
248 # be paranoid and exit the loop if we haven't reduced the number of packs
249 [ $_newc -lt $_cnt ] ||
break
255 # Unfortunately, some fetch strategies (e.g. git-svn and non-smart HTTP) lack
256 # the ability to store newly fetched objects in a pack.
257 # However, the fetch code conveniently sets .needspack just before it fetches
258 # so that it's easy to find all the loose objects that have been fetched and
259 # combine them into a pack. The --no-reuse-delta option is meaningless here
260 # since everything to be packed is a loose object and therefore not a delta so
261 # deltification will always take place.
263 [ -f .needspack
] ||
return 0
265 mv -f .needspack .needspackgc
266 progress
"~ [$proj] combining fetched loose objects into a pack"
267 _newp
="$(find -L objects/$octet -maxdepth 1 -type f -newer .needspackgc -name "$octet19*" -print 2>/dev/null |
268 LC_ALL=C awk -F / '{print $2 $3}' |
269 run_combine_packs --objects --names $packopts --incremental --all-progress-implied $quiet --non-empty)" ||
{
270 # We used to fail gc here.
271 # Now, however, we just ignore the failure because we have
272 # another mechanism to handle loose objects and it's possible
273 # that the fetcher somehow brought in unconnected objects which
274 # would cause the above combine-packs to fail.
275 # By ignoring the failure and just removing the .needspack file
276 # the loose objects will be treated as "ordinary" loose objects
277 # and packed using the "--weak-naming" option which can handle
278 # broken connectivity.
279 # That's a better solution than just failing here or leaving
280 # .needspack behind to potentially continue to fail again and
284 if [ -n "$_newp" ]; then
285 # remove the now-redundant loose objects -- this is always safe
286 # even during a concurrent push because a reprepare_packed_git
287 # will be triggered if an object that should be there is not
288 # found thereby finding it in the new pack instead
289 git prune-packed
$quiet
294 # HEADSHA="$(pack_is_complete /full/path/to/some.pack /full/path/to/packed-refs "$(cat HEAD)")"
296 # Must have a matching .idx file and a non-empty packed-refs file
297 [ -s "${1%.pack}.idx" ] ||
return 1
298 [ -s "$2" ] ||
return 1
304 "ref: refs/"?
*|
"ref:refs/"?
*|
"refs/"?
*)
305 _headmatch
="${3#ref:}"
306 _headmatch
="${_headmatch# }"
307 _headmatchpat
="$(echo "$_headmatch" | LC_ALL=C sed -e 's/\([.$]\)/\\\1/g')"
308 _headsha
="$(LC_ALL=C grep -e "^
$octet20$hexdig* $_headmatchpat\$
" <"$2" |
309 LC_ALL=C cut -d ' ' -f 1)"
310 case "$_headsha" in $octet20*) :;; *)
318 rm -rf pack_is_complete_test
319 mkdir pack_is_complete_test
320 mkdir pack_is_complete_test
/refs
321 mkdir pack_is_complete_test
/objects
322 mkdir pack_is_complete_test
/objects
/pack
323 echo "$_headsha" >pack_is_complete_test
/HEAD
324 ln -s "$1" pack_is_complete_test
/objects
/pack
/
325 ln -s "${1%.pack}.idx" pack_is_complete_test
/objects
/pack
/
326 ln -s "$2" pack_is_complete_test
/packed-refs
327 _count
="$(git --git-dir=pack_is_complete_test rev-list --count --all 2>/dev/null)" ||
:
328 rm -rf pack_is_complete_test
329 [ -n "$_count" ] ||
return 1
330 [ "$_count" -gt 0 ] 2>/dev
/null ||
return 1
334 # write the hexadecimal sha256 hash of stdin plus a trailing newline to stdout
336 "$cfg_basedir/bin/ltsha256"
339 # Compute a "signature" for the refs in the specified (default .) repository.
340 # Instead of passing --head to show-ref, the actual contents of HEAD are used
341 # to capture changes in HEAD's symbolic-ref value that would otherwise be missed.
342 # $1 => variable name to store result hash in
343 # $2 => --git-dir to use, defaults to "."
344 v_compute_refs_sighash
() {
345 eval "$1="'"$({ cat "${2:-.}/HEAD"; git --git-dir="${2:-.}" show-ref; } |
349 # On return a "$lockf" will have been created that must be removed when gc is done
351 v_lock_gc _lockresult ||
{
352 echo >&2 "[$proj] $_lockresult"
358 # Create a repack subdirectory such that running repack in it will pack the
359 # same things that a pack in the normal directory would except that the pack
360 # is guaranteed to be generated in an optimized order by adding a suitable
361 # synthesized ref in the refs/tags namespace (yes, pack-objects.c really does
362 # behave differently depending on the contents of the refs/tags namespace).
363 # Before calling this, pack-refs --all MUST be performed or the wrong pack
364 # will end up being made.
366 # If a ref deletion is pushed after making the repack subdir but before the
367 # the actual repack, the discarded objects will be packed -- no big deal,
368 # they'll get discarded the next time gc runs.
370 # If a fast-forward ref update is pushed after making the repack subdir but
371 # before the actual repack, it will be picked up and the new objects packed
372 # (subject to the normal git repack race about picking such updates up).
374 # If a non-fast-forward ref update is pushed after making the repack subdir but
375 # before the actual repack, it will be picked up like a fast-forward update but
376 # the discarded objects will be included like a ref deletion (until the next
377 # scheduled gc takes place).
379 # We retain a copy of the original packed-refs file as repack/packed-refs.orig
380 # If ref deletions come in while we're repacking, the original packed-refs
381 # file will be modified, but we'll still pack the deleted ref(s).
382 # If the packed-refs.orig file is used to create the bundle header we avoid
383 # a situation where the bundle contains a ref state that never actually
384 # existed in reality (for example a new branch is pushed and then an old
385 # branch deleted afterwards -- the deletion would show up in the bundle
386 # because it will cause the original packed-refs file to be re-written, but
387 # the new branch creation will not unless we do another pack-refs which might
388 # lead to having in incomplete bundle). Therefore we want to keep a copy of
389 # the original packed-refs file around. We do the same thing for HEAD.
391 # It's possible that the "objects" subdirectory is a symbolic link.
392 # Git does support this. However, during the repacking process, new packs
393 # will be created in repack/alt/pack and then moved into objects/pack.
394 # In order for this to work seemlessly, they must both be on the same
395 # filesystem. But when objects (or even objects/pack) is a symbolic link they
396 # might not be. For this reason a "repack" subdirectory is created under
397 # objects/pack and the repack/alt/pack directory symbolicly linked to it.
399 # Git allows not just HEAD to be a symbolic-ref, but any ref anywhere in the
400 # refs namespace. We are concerned about ref name collisions and getting the
401 # right tag set to get an optimal pack. We can safely duplicate the ref space
402 # under refs/heads, refs/notes and refs/remotes without any risk of unwanted
403 # collisions and this will likely make over 99%+ of all symbolic refs found
404 # in the wild work properly. Girocco itself never creates any symbolic refs
405 # inside the refs namespace; this is a nod to simultaneously using a Girocco
406 # repository for other purposes.
408 ! [ -d repack
] ||
rm -rf repack
409 ! [ -d repack
] ||
{ echo >&2 "[$proj] cannot remove repack subdirectory"; exit 1; }
410 [ -d objects
/pack
] || mkdir
-p objects
/pack
411 ! [ -d objects
/pack
/repack
] ||
rm -rf objects
/pack
/repack
412 ! [ -d objects
/pack
/repack
] ||
{ echo >&2 "[$proj] cannot remove objects/pack/repack subdirectory"; exit 1; }
413 mkdir repack repack
/refs repack
/alt objects
/pack
/repack
414 [ -d info
] || mkdir info
415 ln -s ..
/config repack
/config
416 ln -s ..
/info repack
/info
417 ln -s ..
/objects repack
/objects
418 ln -s "$PWD/objects/pack/repack" repack
/alt
/pack
419 ! [ -d logs
] ||
ln -s ..
/logs repack
/logs
420 ! [ -d worktrees
] ||
ln -s ..
/worktrees repack
/worktrees
421 _lines
=$
(( $
(LC_ALL
=C
wc -l <packed-refs
) ))
422 cat HEAD
>repack
/HEAD.orig
423 cat packed-refs
>repack
/packed-refs.orig
424 ln -s packed-refs.orig repack
/packed-refs
425 cp repack
/HEAD.orig repack
/HEAD
426 v_compute_refs_sighash _rsig repack
427 rm repack
/packed-refs repack
/HEAD
428 ln -s ..
/..
/refs repack
/refs
/refs
429 echo "$_rsig" >repack
/packed-refs.sighash
430 >repack
/packed-refs.extra
432 if [ $
(LC_ALL
=C
wc -l <repack
/packed-refs.orig
) -ne "$_lines" ]; then
433 echo >&2 "[$proj] error: make_repack_dir failed original packed-refs line count sanity check"
436 if [ "${cfg_fetch_stash_refs:-0}" = "0" ]; then
437 # migrate any refs/stash or refs/tgstash lines to repack/packed-refs.extra
438 <repack
/packed-refs.orig LC_ALL
=C
awk -v xtra
="repack/packed-refs.extra" '
439 BEGIN { peeling = 0 }
440 NR == 1 && /^#/ { print; next; }
441 peeling && /^\^/ { print >>xtra; next; }
442 /^[0-9A-Fa-f][0-9A-Fa-f][0-9A-Fa-f][0-9A-Fa-f]+ refs\/(stash|tgstash)(\/|$)/ {
447 { peeling = 0; print; }
448 ' >repack
/packed-refs.new
449 _xtralines
="$(( $(LC_ALL=C wc -l <repack/packed-refs.extra) + 0 ))"
450 _newlines
="$(( $(LC_ALL=C wc -l <repack/packed-refs.new) + 0 ))"
451 if [ "$(( $_newlines + $_xtralines ))" -ne "$_lines" ]; then
452 echo >&2 "[$proj] error: make_repack_dir failed packed-refs.extra line count sanity check"
455 mv -f repack
/packed-refs.new repack
/packed-refs.orig
458 # Note: Git v1.5.0 introduced the "# pack-refs with:" header line for the packed-refs file
459 sed '/^# pack-refs/d; s, refs/, refs/!/,' <repack
/packed-refs.orig
>repack
/packed-refs
461 headref
="$(git rev-parse --verify --quiet HEAD)" ||
:
462 if [ -n "$headref" ]; then
463 echo "$headref refs/!=/HEAD" >>repack
/packed-refs
464 echo "$headref refs/heads/!" >>repack
/packed-refs
465 nohead
='\, refs/heads/!$,d; '
466 _lines
=$
(( $_lines + 2 ))
468 if [ $
(( $
(LC_ALL
=C
wc -l <repack
/packed-refs
) + 1 )) -ne "$_lines" ]; then
469 echo >&2 "[$proj] error: make_repack_dir failed packed-refs initial line count sanity check"
472 sed -n "$nohead"'\, refs/heads/,p; \, refs/notes/,p; \, refs/remotes/,p' <repack
/packed-refs.orig
>>repack
/packed-refs
473 _newlines
="$(( $(LC_ALL=C wc -l <repack/packed-refs) ))"
474 if [ $
(( $_newlines + 1 )) -lt "$_lines" ]; then
475 echo >&2 "[$proj] error: make_repack_dir failed packed-refs extra line count sanity check"
479 optref
="$(git rev-list -n 1 --all 2>/dev/null)" ||
:
480 if [ -n "$optref" ]; then
481 echo "$optref refs/tags/!" >>repack
/packed-refs
482 _lines
=$
(( $_lines + 1 ))
483 echo "$optref" >repack
/HEAD
485 cat HEAD
>repack
/HEAD
487 if [ $
(LC_ALL
=C
wc -l <repack
/packed-refs
) -ne "$_lines" ]; then
488 echo >&2 "[$proj] error: make_repack_dir failed packed-refs line count sanity check"
493 # Remove any crud that's been left behind by interrupted operations
494 # that did not clean up after themselves
496 # Remove any existing FETCH_HEAD
497 # There can only be a FETCH_HEAD if we've been fetching, not if we've been
498 # receiving pushes (those never create a FETCH_HEAD).
499 # And if we're fetching because we're a mirror, we know we're not fetching right
500 # now since jobd.pl never runs a project's fetch simultaneously with its gc.
501 # Therefore any existing FETCH_HEAD is junk. And it may be many megabytes if
502 # there were a lot of refs.
505 # Remove any stale ref locks
506 clear_stale_ref_locks
508 # remove any existing pack_is_complete_test or repack subdirectories
509 # If either exists when this function is called it's crud
510 rm -rf pack_is_complete_test repack objects
/pack
/repack
512 # Remove any stale pack remnants that are more than an hour old.
513 # Stale pack fragments are defined as any pack-<sha1>.ext where .ext is NOT
514 # .pack AND the corresponding .pack DOES NOT exist. A bunch of stale
515 # pack-<sha1>.idx files without their corresponding .pack files are worthless
516 # and just waste space. Normally there shouldn't be any remnants but actually
517 # this can happen when things are interrupted at just the wrong time.
518 # Note that the objects/pack directory is created by git init and should
520 find -L objects
/pack
-maxdepth 1 -type f
-mmin +60 -name "pack-$octet20*.?*" -print |
521 LC_ALL
=C
sed -e 's/^objects\/pack\/pack-//; s/\..*$//' | LC_ALL
=C
sort -u |
522 while read packsha
; do
523 ! [ -e "objects/pack/pack-$packsha.pack" ] ||
continue
524 rm -f "objects/pack/pack-$packsha".?
*
527 # Remove any stale tmp reflogs files that are more than one hour old.
528 # Since they are created only while the pre-receive hook is running and
529 # all it does is process a bunch of refs passed to it on standard input
530 # it's inconceivable that it would ever take as much as an hour to run.
531 if [ -d reflogs
]; then
532 find -L reflogs
-maxdepth 1 -type f
-mmin +60 -name "tmp_*" -exec rm -f '{}' + ||
:
535 # Remove any stale object tmp_obj_* files that are more than 3 hours old.
536 # Really these files should only exist very briefly so there shouldn't be any
537 # but things happen that can end up leaving them behind.
538 find -L objects
/$octet -maxdepth 1 -type f
-mmin +180 -name "tmp_obj_?*" -exec rm -f '{}' + 2>/dev
/null ||
:
540 # Remove any stale pack .keep files that are more than 12 hours old.
541 # We don't do anything to create any permanent pack .keep files, so they must
542 # be remnants from some failed push or something. Removing the .keep will
543 # allow the pack to be properly repacked.
544 find -L objects
/pack
-maxdepth 1 -type f
-mmin +720 -name "pack-$octet20*.keep" -exec rm -f '{}' + ||
:
546 # Remove any stale tmp_pack_*, tmp_idx_*, tmp_bitmap_*, packtmp-* or .tmp-*-pack* files
547 # that are more than 12 hours old.
548 find -L objects
/pack
-maxdepth 1 -type f
-mmin +720 \
( \
549 -name "tmp_pack_?*" -o -name "tmp_idx_?*" -o -name "tmp_bitmap_?*" -o \
550 -name "packtmp-?*" -o -name ".tmp-?*-pack*" \
551 \
) -exec rm -f '{}' + ||
:
553 # Remove any stale incoming-* object quarantine directories that are
554 # more than 12 hours old. These are new with Git >= 2.11.0.
555 find -L objects
-maxdepth 1 -type d
-name 'incoming-?*' -mmin +720 \
556 -exec rm -rf '{}' + ||
:
558 # Remove any stale shallow_* files that are more than 12 hours old.
559 # These can be left behind by Git >= 1.8.4.2 and < 2.0.0 when a client
560 # requests a shallow clone. Also discard stale .refs-temp* and
561 # .refs-new* files at the same time.
562 find -L .
-maxdepth 1 -type f
-mmin +720 \
( \
563 -name "shallow_?*" -o -name ".refs-temp*" -o -name ".refs-new*" \
564 \
) -exec rm -f '{}' + ||
:
566 # Remove any stale cmbnpcks-* dirs that are more than 12 hours old.
567 # These can be left behind by abnormal exits (e.g. power failure).
568 find -L .
-maxdepth 1 -type d
-mmin +720 -name "cmbnpcks-?*" \
569 -exec rm -rf '{}' + ||
:
571 # Remove any stale *.temp files in the objects area that are more than 12 hours old.
572 # This can be stale sha1.temp, or stale *.pack.temp so we kill all stale *.temp.
573 find -L objects
-type f
-mmin +720 -name "*.temp" -exec rm -f '{}' + ||
:
575 # Remove any stale *.lock files in the htmlcache area that might have been left
576 # behind after an abnormal exit during an attempt to update a cached file and
577 # are more than 1 hour old.
578 ! [ -d htmlcache
] ||
find -L htmlcache
-type f
-mmin +60 -name "*.lock" -exec rm -f '{}' + ||
:
580 # Remove any stale git-svn temp files that are more than 12 hours old.
581 # The git-svn process creates temp files with random 10 character names
582 # in the root of $GIT_DIR. Unfortunately they do not have a recognizable
583 # prefix, so we just have to kill any files with a 10-character name. We
584 # do this only for git-svn mirrors. All characters are chosen from
585 # [A-Za-z0-9_] so we can at least check that and fortunately the only
586 # collision is 'FETCH_HEAD' but that shouldn't matter.
587 # There may also be temp files with a Git_ prefix as well.
588 if [ -n "$svn_mirror" ]; then
589 _randchar
='[A-Za-z0-9_]'
590 _randchar2
="$_randchar$_randchar"
591 _randchar4
="$_randchar2$_randchar2"
592 _randchar10
="$_randchar4$_randchar4$_randchar2"
593 find -L .
-maxdepth 1 -type f
-mmin +720 -name "$_randchar10" -exec rm -f '{}' + ||
:
594 find -L .
-maxdepth 1 -type f
-mmin +720 -name "Git_*" -exec rm -f '{}' + ||
:
597 # Remove any stale fast_import_crash_<pid> files that are more than 3 days old.
598 if [ -n "$gfi_mirror" ]; then
599 find -L .
-maxdepth 1 -type f
-mmin +4320 -name "fast_import_crash_?*" -exec rm -f '{}' + ||
:
602 # Remove any stale core or *.core or core.* files that are more than 3 days old.
603 find -L .
-maxdepth 1 -type f
-mmin +4320 \
( -name "core" -o -name "*.core" -o -name "core.*" \
) \
604 -exec rm -f '{}' + ||
:
608 ## Garbage Collection Types
610 ## There are two kinds of possible garbage collection (gc) operations:
612 ## 1. A normal, full gc
615 ## If the full garbage collection interval has expired (or gc has never been
616 ## run), then a normal, full gc will take place. Otherwise, a "mini" gc will
617 ## take place if the file .needsgc exists.
619 ## A "mini" gc is similar to "git gc --auto" in that it may not end up actually
620 ## doing anything unless the right conditions are present so it's not a burden
621 ## to run it often. If the file .needsgc exists, a "mini" gc will occur at
622 ## the next opportunity.
624 ## See the docs/technical/gc.txt and docs/technical/gc-mini.txt files for more
625 ## of the gory details of how garbage collection is performed.
627 ## Note, however, that the .nogc file suppresses ALL gc activity (normal or mini).
632 cd "$cfg_reporoot/$proj.git"
633 [ -d objects
/pack
] ||
{ rm -f gfi-packs
; mkdir
-p objects
/pack
; }
634 mirror_url
="$(get_mirror_url)" ||
:
636 ! is_svn_mirror_url
"$mirror_url" || svn_mirror
=1
638 if [ -f gfi-packs
] && [ -s gfi-packs
] && is_gfi_mirror_url
"$mirror_url"; then
642 # If git config --bool --get girocco.redelta is explicitly false then automatic
643 # redelta when there are less than $var_redelta_threshold objects will be suppressed.
644 # On the other hand, if git config --get girocco.redelta is "always" then, on a full
645 # gc only, for the final repack, deltas will always be recomputed.
646 # This can be set on a per-project basis to avoid unusual pathological gc behavior.
647 # Setting this will hurt efficiency of the affected repository.
648 # Note that fast-import packs ALWAYS get new deltas regardless of this setting.
649 noreusedeltaopt
="--no-reuse-delta"
650 [ "$(git config --bool --get girocco.redelta 2>/dev/null || :)" != "false" ] || noreusedeltaopt
=
652 [ "$(git config --get girocco.redelta 2>/dev/null || :)" != "always" ] || alwaysredelta
=1
654 # Extract any -f or -F or --no-reuse-object or --no-reuse-delta options
655 # to be compatible with the old and new gc.sh versions and avoid ugly argument
656 # duplication in process lists at the same time
657 # Any options found will override the "girocco.redelta" setting
660 while [ $idx -gt 0 ]; do
669 -F|
--no-reuse-object)
677 printf >&2 '%s\n' "bad non-option argument: $opt"
678 echo >&2 "(Did you perhaps intend to use a --xxx=yyy form?)"
681 [ -z "$opt" ] ||
set -- "$@" "$opt"
683 if [ -n "$alwaysredelta" ]; then
684 noreusedeltaopt
="--no-reuse-delta"
685 [ -z "$recompress" ] || noreusedeltaopt
="--no-reuse-object"
688 trap 'e=$?; rm -f .gc_in_progress; if [ $e != 0 ]; then echo "gc failed dir: $PWD" >&2; fi' EXIT
692 # date -R is linux-only, POSIX equivalent is '+%a, %d %b %Y %T %z'
693 datefmt
='+%a, %d %b %Y %T %z'
696 if [ "${force_gc:-0}" = "0" ] && check_interval lastgc
$cfg_min_gc_interval; then
697 if [ -e .needsgc
]; then
700 progress
"= [$proj] garbage check skip (last at $(config_get lastgc))"
704 if [ -e .nogc
]; then
705 progress
"x [$proj] garbage check disabled"
708 if ! [ -e .nofetch
] && [ -e .clone_in_progress
] && ! [ -e .clone_failed
]; then
709 progress
"x [$proj] garbage check disabled (clone in progress)"
712 if [ -z "$isminigc" ] && [ -e .delaygc
] && [ -e .needsgc
]; then
713 # Eligible for a full gc but .delaygc is set so it would be skipped
714 # However .needsgc is also set so transform it into a mini instead
716 progress
"~ [$proj] garbage check delayed but checking mini because .needsgc"
719 if [ -n "$isminigc" ]; then
720 # Perform a "mini" gc
721 # Note that .delaygc is ignored here as that's only intended for full gc
723 rm -f .allowgc .needsgc
724 rm -f objects
/pack
/pack-
*_
[rful
].keep
729 maintain_auto_gc_hack
730 generate_auto_gc_update
732 if [ -f .needspack
]; then
734 progress
"+ [$proj] mini garbage check ($(date))"
737 if [ -z "$cfg_delay_gfi_redelta" ] && [ -n "$gfi_mirror" ]; then
738 # $Girocco::Config::delay_gfi_redelta is false, force redeltification now
739 if [ -z "$miniactive" ]; then
741 progress
"+ [$proj] mini garbage check ($(date))"
745 if lotsa_loose_objects
; then
746 if [ -z "$miniactive" ]; then
748 progress
"+ [$proj] mini garbage check ($(date))"
752 # If there aren't at least 10 non-keep, non-bitmap, non-bndl packs then
753 # don't actually process them yet
754 lpo
="--exclude-no-idx --exclude-keep --exclude-bitmap --exclude-bndl --quiet"
755 packcnt
="$(list_packs --count $lpo objects/pack)" ||
:
756 if [ "${packcnt:-0}" -ge 10 ]; then
757 if [ -z "$miniactive" ]; then
759 progress
"+ [$proj] mini garbage check ($(date))"
761 # if we have at least 10 packs go ahead and pack all refs now too
762 git pack-refs
--all --prune
763 if [ -n "$gfi_mirror" ]; then
765 packcnt
="$(list_packs --count $lpo objects/pack)" ||
:
767 # if repack_gfi_packs dropped the pack count to < 10 don't combine
768 if [ "${packcnt:-0}" -ge 10 ]; then
770 combine_small_loose_packs
771 packcnt
="$(list_packs --count $lpo objects/pack)" ||
:
773 # if we still have more than 10 packs trigger a full gc
774 if [ "${packcnt:-0}" -ge 10 ]; then
775 # We shouldn't be in a .delaygc state at this point, but if
776 # we are then nuke it because we really need a full gc now
778 git config
--unset gitweb.lastgc
780 git update-server-info
# just in case
781 progress
"- [$proj] mini garbage check triggering full gc too many packs ($(date))"
786 if [ -n "$miniactive" ]; then
787 git update-server-info
788 progress
"- [$proj] mini garbage check ($(date))"
790 progress
"= [$proj] mini garbage check nothing but crud removal to do ($(date))"
795 # Avoid unnecessary garbage collections:
796 # 1. If lastreceive is set and is older than lastgc
798 # 2. We are not a fork (is_empty_alternates_file) -OR- lastparentgc is older than lastgc
800 # If lastgc is NOT set or lastreceive is NOT set we MUST run gc
801 # If we are a fork and lastparentgc is NOT set we MUST run gc
803 # If the repo is dirty after removing any crud we MUST run gc
805 gcstart
="$(date "$datefmt")"
808 is_empty_alternates_file objects
/info
/alternates || isfork
=1
810 [ -z "$isfork" ] || lastparentgcsecs
="$(config_get_date_seconds lastparentgc)" ||
:
812 if lastreceivesecs
="$(config_get_date_seconds lastreceive)" &&
813 [ "${force_gc:-0}" = "0" ] &&
814 lastgcsecs
="$(config_get_date_seconds lastgc)" &&
815 [ $lastreceivesecs -lt $lastgcsecs ]; then
816 # We've run gc since we last received, so maybe we can skip,
817 # check if not fork or fork and lastparentgc < lastgc
818 if [ -n "$isfork" ]; then
819 if [ -n "$lastparentgcsecs" ] &&
820 [ $lastparentgcsecs -lt $lastgcsecs ]; then
821 # We've run gc since our parent ran gc so we can skip
825 # We don't have any alternates (we're not a forK) so we can skip
830 # Now check the simple signatures if $skipgc and decline to skip if they do not match
832 if [ -n "$skipgc" ]; then
833 # check the packs signature first, no previous sig => must run gc
834 phash
="$(config_get girocco.gcsig.packs)" ||
:
835 [ -n "$phash" ] || skipgc
=
836 if [ -n "$skipgc" ]; then
837 # a previous packs sig is available, check for a match
838 _chksig
="$(list_packs -C objects/pack --exclude-no-idx --quiet . |
839 LC_ALL=C sort | sig_hash_stdin)" ||
:
840 [ "$phash" = "$_chksig" ] || skipgc
=
843 if [ -n "$skipgc" ]; then
844 # check the refs signature second, no previous sig => must run gc
845 rhash
="$(config_get girocco.gcsig.refs)" ||
:
846 [ -n "$rhash" ] || skipgc
=
847 if [ -n "$skipgc" ]; then
848 # a previous refs sig is available, check for a match
849 v_compute_refs_sighash _chksig
850 [ "$rhash" = "$_chksig" ] || skipgc
=
854 # Prevent any other simultaneous gc operations
857 # At this point, if .allowgc or .gc_failed exists, it's now crud to be removed
858 rm -f .allowgc .gc_failed
860 # Always get rid of crud
863 # Ideally we would do this in post-receive, but that would mean duplicating the
864 # logic so it's available in the chroot jail and that's highly undesirable
865 # Instead, since the first gc will be triggered immediately following the first
866 # push, we do the check here as it's quick and harmless if HEAD is already valid
867 check_and_set_head ||
:
869 # Always perform reflogs maintenance
874 # Always maintain auto gc hack
875 maintain_auto_gc_hack
876 generate_auto_gc_update
878 # Run 'git svn gc' now for svn mirrors
879 if [ -n "$svn_mirror" ]; then
883 # Skip the actual gc if .delaygc is set
884 if [ -e .delaygc
]; then
885 progress
"x [$proj] garbage check delayed (except for crud removal)"
890 # Do not skip gc if the repo is dirty
891 if [ -n "$skipgc" ] && ! is_dirty
; then
892 progress
"= [$proj] garbage check nothing but crud removal to do ($(date))"
893 config_set lastgc
"$gcstart"
899 if [ -n "$isfork" ] && [ -z "$lastparentgcsecs" ]; then
900 # set lastparentgc and then update gcstart to be at least 1 second later
901 config_set lastparentgc
"$gcstart"
904 if [ -z "$lastreceivesecs" ]; then
905 # set lastreceive and then update gcstart to be at least 1 second later
906 config_set lastreceive
"$gcstart"
909 if [ -n "$bumptime" ]; then
911 gcstart
="$(date "$datefmt")"
914 progress
"+ [$proj] garbage check ($(date))"
917 [ -z "$alwaysredelta" ] || newdeltas
="$noreusedeltaopt"
918 if [ -z "$newdeltas" ] && [ -n "$gfi_mirror" ]; then
919 if [ $
(list_packs
--exclude-no-idx --count objects
/pack
) -le \
920 $
(list_packs
--exclude-no-idx --count --quiet --only gfi-packs
) ]; then
921 # Don't bother with repack_gfi_packs since everything's being repacked
922 newdeltas
="--no-reuse-delta"
925 if [ -z "$newdeltas" ] && [ -n "$noreusedeltaopt" ] &&
926 [ $
(list_packs
--all --exclude-no-idx --count-objects objects
/pack
) -le $var_redelta_threshold ]; then
927 # There aren't enough objects to worry about so just redelta to get the best pack
928 newdeltas
="--no-reuse-delta"
930 if [ -z "$newdeltas" ]; then
931 # Since we're not going to recompute deltas overall, we need to do the
932 # "mini" maintenance so that we can get more optimal deltas
933 [ -z "$noreusedeltaopt" ] || make_needs_pack
935 force_single_pack_redelta
=
936 [ -n "$gfi_mirror" ] ||
[ -n "$svn_mirror" ] || force_single_pack_redelta
=1
937 [ -z "$noreusedeltaopt" ] || combine_small_packs
$force_single_pack_redelta
938 [ -z "$noreusedeltaopt" ] || combine_small_loose_packs
$force_single_pack_redelta
942 ## Safe Pruning In Forks
944 ## We are about to perform garbage collection. We do NOT use the "git gc" or
945 ## the "git repack" commands directly as they do not provide enough control over
946 ## the fine details. However, we DO maintain a "gc.pid" file during our garbage
947 ## collection so that a simultaneous "git gc" by an administrator will be
948 ## blocked (and similarly we refuse to start garbage collection if we cannot
949 ## create the "gc.pid" file).
951 ## When we say "gc" in the below description we are referring to our "gc.sh"
952 ## script, NOT the "git gc" command.
954 ## If the project we are running garbage collection (gc) on has any forks we
955 ## must be careful not to remove any objects that while no longer referenced by
956 ## this project (the parent) are still referenced by one or more forks (the
957 ## children) otherwise the children will become corrupt and we can't abide
960 ## One way to accomplish this is to simply hard-link all currently existing
961 ## loose objects and packs in the parent into all the children that refer to the
962 ## parent (via a line in their objects/info/alternates file) before beginning
963 ## the gc operation and then relying on a subsequent gc in the child to clean up
964 ## any excess objects/packs. We used to use this strategy but it's very
965 ## inefficient because:
967 ## 1. The disk space used by the old pack(s)/object(s) will not be reclaimed
968 ## until all children (and their children, if any) run gc by which time
969 ## it's quite possible the topmost parent will have run gc again and
970 ## hard-linked yet another old pack down to its children (not to mention
973 ## 2. When using the "-A" option with "git repack", any new objects in the
974 ## parent that are not referenced by children will continually get
975 ## exploded out of the hard-linked pack in the children whenever the
978 ## 3. To avoid suboptimal and/or unnecessarily many packs being hard-linked
979 ## into child forks, we must run the "mini" gc maintenance before we
980 ## perform the hard-linking into the children which provides yet another
981 ## source of inefficiency.
983 ## While we were still using the "-A" option to "git repack" (that was not
984 ## always the case) to guarantee we can access old ref values for long enough
985 ## to send out a meaningful mail.sh notification, another, more efficient,
986 ## option became available to prevent corruption of child forks that continue
987 ## to refer to objects that are no longer reachable from any ref in the parent.
989 ## The only things that need be copied (or hard-linked) into the child fork(s)
990 ## are those objects that have become unreachable from any ref in the parent.
992 ## When we were using the "git repack -A -d" + "git prune --expire=1.day.ago"
993 ## technique, the only objects that could ever be removed were loose objects
994 ## that "git prune" determined were expired. In that case, loose objects were
995 ## all that need be hard-linked down to child forks in order to avoid
996 ## corruption of any child fork(s).
998 ## The "git repack -A -d" + "git prune --expire=1.day.ago" + hard-linking loose
999 ## objects to child forks technique remains fundamentally sound from the
1000 ## perspective of supporting simultaneous gc and push and keeping newly
1001 ## unreachable objects around long enough to be sure we can send out meaningful
1002 ## ref change notifications and never corrupting any child forks and never
1003 ## persisting the lifetime of large old packs containing mostly duplicate or
1004 ## unreachable objects as gc percolates through a project's entire fork tree.
1006 ## However, that technique suffers from one potential prodigious pitfall.
1008 ## Unreachable objects come flying out of their packs to splatter all over the
1009 ## objects subdirectories possibly creating a huge, inefficient mess.
1011 ## Often this is not an issue. Even with a lot of rebasing going on, usually
1012 ## the only objects that will splatter are some commits, trees and the odd blob
1013 ## here and there. Not enough to be overly concerned about.
1015 ## However, for the reppository that frequently experiences a lot of non-fast-
1016 ## forward updates and/or outright ref deletion, the number of objects suddenly
1017 ## popping out of their packs at "git repack -A -d" time can be overwhelming.
1019 ## To avoid this issue we now use a four phase pack creation strategy.
1020 ## This will result in creation of up to four packs (instead of at most one).
1022 ## I. A complete pack (with bitmaps if appropriate) gets created including
1023 ## only "reachable" objects from all refs/... refs plus HEAD. This will
1024 ## also serve as the virtual bundle for the repository.
1026 ## II. A pack of recently-became-unreachable objects and friends is created.
1027 ## (The "friends" are ref logs, linked working tree HEADs and indicies.)
1028 ## Because both the pre-receive and update.sh script record all ref
1029 ## changes we can easily choose the cut off point for "recently".
1030 ## It is only the fact we maintain those logs in the reflogs subdirectory
1031 ## that allows this step to be possible.
1033 ## III. If the repository has any forks with a non-zero length alternates file,
1034 ## yet another pack of "--keep-unreachable" objects is generated that will
1035 ## not actually be kept in the parent, but hard-linked into all the forks.
1037 ## IV. Finally, after running "git prune-packed", any remaining loose objects
1038 ## are migrated into a pack of their own.
1040 ## We then remove any non-.keep packs that existed before we started the
1041 ## process being careful to keep any same-pack pushes for the "Push Pack Redux"
1042 ## race condition (see docs/technical/gc.txt).
1044 ## By using "git pack-objects" directly we are able to accomplish this with
1045 ## very little additional effort.
1047 ## The packs produced by (III) are treated almost like ".keep" packs by child
1048 ## forks in that the objects in them are never repacked into any other
1049 ## "--keep-unreachable" packs (but they can migrate into phase I or II packs)
1050 ## and those phase III packs are then hard-linked into any grandchild forks.
1052 ## This avoids the space explosion that could occur if each fork level ended
1053 ## up duplicating the "--keep-unreachable" pack space by repacking those
1054 ## objects (essentially breaking the hard-link to the single copy of those
1057 ## While it is true that each level of forks could potentially add yet another
1058 ## phase III pack to be hard-linked down to its children, such packs will only
1059 ## include unreachable objects not already in any phase III packs that were
1060 ## received from the parent.
1062 ## The space for the phase III packs will not be reclaimed until the gc
1063 ## finishes percolating through the entire "fork tree" of a project.
1065 ## This is not much different than the "git repack -A -d" situation where
1066 ## all the loose objects are hard-linked down into child forks. In that
1067 ## case forks that actually need any of those objects could gradually reduce
1068 ## the number of objects hard-linked into deeper fork levels.
1070 ## The difference with a phase III "--keep-unreachable" pack is that there
1071 ## cannot be any gradual reduction like that since it would require repacking
1072 ## the pack and breaking the hard-link thereby increasing storage space. The
1073 ## storage will instead always be reclaimed all at once when all of the
1074 ## projects in the "fork tree" complete their gc.
1076 ## However, the belief is that the huge space win by having all the
1077 ## unreachable objects packed up together far eclipses (when many objects are
1078 ## involved, the single-pack version can end up using 1/20th or less of the
1079 ## disk space compared to having them all as loose objects) any brief minor
1080 ## space savings that might occur under the "git repack -A -d" loose object
1081 ## system prior to the gc collection completing for all the projects in the
1086 ## utility functions
1090 find -L "$1" -maxdepth 1 -type f
! -perm -ug+w \
1091 -name "pack-$octet20*.pack" -exec chmod ug
+w
'{}' + ||
:
1095 if [ -s "$1" ]; then
1097 export GIT_INDEX_FILE
1098 git write-tree
2>/dev
/null ||
:
1099 unset GIT_INDEX_FILE
1103 get_detached_head
() {
1104 if [ -s "$1" ] && read -r _head
<"$1" 2>/dev
/null
; then
1105 case "$_head" in $octet20*)
1111 # single argument must be a top-level GIT_DIR
1112 # output will be (one per line, zero or more lines) full hash
1113 # values (i.e. 40 or more hex digits) from possible detached head
1114 # "single level" refs (e.g. "FETCH_HEAD" "MERGE_HEAD" etc.) from
1115 # files in the specified directory that have a "suitable" name and
1116 # have a length >= 40 and <= 1000 where EVERY line in a file MUST
1117 # match a 40 digit (or longer) hex string or that file will be ignored.
1118 # In a nod to Git each line first has any tab and anything following truncated.
1119 # NO sorting NOR "uniq"ing NOR "--batch-check"ing is performed on the output.
1120 # Also note that "HEAD" is NOT EXCLUDED and if detached will be output!
1121 get_detached_friends
() {
1122 if [ -n "$1" ] && [ -d "$1" ]; then
1123 LC_ALL
=C
find -H "$1" -maxdepth 1 -name '[A-Za-z]*[A-Za-z0-9]' \
1124 -type f
-size +39c
-size -1001c -exec awk '
1126 function process(fn, fnt, hashes, hcnt, fl, hi) {
1127 fnt = fn; sub(/^.*\//, "", fnt)
1128 if (length(fnt) > 31 || fnt !~ /^[A-Za-z][A-Za-z0-9_-]*[A-Za-z0-9]$/) return;
1130 while (getline fl < fn) {
1131 sub(/\t.*$/, "", fl)
1132 if (length(fl) < 40 || fl !~ /^[0-9a-fA-F][0-9a-fA-F]*$/) {hcnt = 0; break;}
1133 hashes[++hcnt] = fl;
1136 for (hi=1;hi<=hcnt;++hi) print tolower(hashes[hi]);
1138 END {for (idx=1;idx<ARGC;++idx) process(ARGV[idx])}
1139 ' '{}' '+' 2>/dev
/null ||
:
1143 # get_worktrees_friends
1144 # single argument is a (possibly relative) path to a "worktrees" subdir
1145 # if omitted it defaults to "worktrees"
1146 # any "friends" found in there are output to stdout
1147 get_worktrees_friends
() {
1148 if [ -d "${1:-worktrees}" ]; then
1149 find -L "${1:-worktrees}" -mindepth 2 -maxdepth 2 -name HEAD
-type f
-print |
1150 while read -r _lwth
; do
1151 get_detached_head
"$_lwth"
1152 get_detached_friends
"${_lwth%HEAD}"
1153 get_index_tree
"${_lwth%HEAD}index"
1158 # compute_extra_reachables
1159 # create lines suitable for a packed-refs file mentioning all the
1160 # other refs we might like to keep.
1161 # the current directory MUST be set to the repository's --git-dir
1162 # the following are included:
1163 # * refs mentioned in repack/packed-refs.extra (if it exists)
1164 # * refs mentioned in reflogs/... files
1165 # * tree(s) created from index file(s)
1166 # * detached linked working tree heads
1167 # Resulting objects are tested for existence and uniqified then output
1168 # one per line under a refs/z* namespace
1169 compute_extra_reachables
() {
1171 if [ -s repack
/packed-refs.extra
]; then
1172 LC_ALL
=C
sed <repack
/packed-refs.extra
-n \
1173 -e 's/^\([0-9A-Fa-f][0-9A-Fa-f]*\).*$/\1/p' \
1174 -e 's/^\^\([0-9A-Fa-f][0-9A-Fa-f]*\).*$/\1/p'
1176 digits8
='[0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9]'
1177 find -L reflogs
-mindepth 1 -maxdepth 1 -type f
-name "$digits8*" -exec gzip -c -d -f '{}' + |
1178 LC_ALL
=C
awk '{print $2; print $3}'
1179 get_detached_friends .
1180 ! [ -f index
] || get_index_tree index
1181 get_worktrees_friends
1183 is_git_dir private
&&
1184 [ "$(cd objects && pwd -P)" = "$(cd private/objects && pwd -P)" ] &&
1185 [ "$(cd refs && pwd -P)" != "$(cd private/refs && pwd -P)" ]
1187 git
--git-dir=private show-ref
--head --hash 2>/dev
/null ||
:
1188 get_detached_friends private
1189 ! [ -f private
/index
] || get_index_tree private
/index
1190 get_worktrees_friends private
/worktrees
1192 } | LC_ALL
=C
sort -u |
1193 git cat-file
${var_have_git_260:+--buffer} --batch-check"${var_have_git_185:+=%(objectname)}" |
1194 LC_ALL
=C
awk '!/missing/ {num++; print $1 " " "refs/" substr("zzzzzzzzzzzz", 1, length(num)) "/" num}'
1198 # the current directory MUST be set to the repository's --git-dir
1199 # first the arguments (which must reference readable files) are cat'd if any
1200 # then the path names of all ref log files are sorted and cat'd in that order
1201 # included in output:
1202 # * the contents of the pathnames given as arguments (if any) in order
1203 # * any existing files in the logs subdirectory and any existing worktree HEAD logs
1204 # but always in sorted filename order
1205 # obviously any missing directories are silently skipped
1206 cat_all_ref_logs
() {
1207 [ $# -le 0 ] || LC_ALL
=C
cat -- "$@"
1209 ! [ -d logs
] ||
find -L logs
-name '.*' -prune -o -name '*.' -prune -o -type f
-size +0c
-print
1210 if [ -d worktrees
]; then
1211 find -L worktrees
-mindepth 2 -maxdepth 2 -name HEAD
-type f
-print |
1212 while read -r _lwth
; do
1214 [ -d "${_lwth%HEAD}logs" ] &&
1215 [ -f "${_lwth%HEAD}logs/HEAD" ]
1217 printf '%s\n' "${_lwth%HEAD}logs/HEAD"
1221 } | LC_ALL
=C
sort | LC_ALL
=C
sed 's/[^A-Za-z0-9._/-]/\\&/g' |
xargs env LC_ALL
=C
cat --
1228 # Everything else is more efficient if we do this first
1229 # The "--prune" option is the default since v1.5.0 but it serves as "documentation" here
1230 git pack-refs
--all --prune
1231 [ -e packed-refs
] ||
>>packed-refs
# should never happen...
1233 # We didn't used to do anything about rerere or worktrees but we're
1234 # trying to make nice with linked working trees these days :)
1235 # Maybe even non-bare repositories too, but *shush* about those ;)
1237 # If we have a worktrees subdir and are running Git >= 2.5.0, prune worktrees
1238 # By doing this first we may save some work if any worktrees are pruned
1239 # Git will remove the worktrees subdir entirely when the last worktree is pruned
1240 if [ -n "$var_have_git_250" ] && [ -d worktrees
]; then
1241 # The value "3.months.ago" is hard-coded into gc.c rather than
1242 # having the default be in worktree.c so we must provide it if
1243 # we get nothing out of the gc.worktreePruneExpire config item
1244 # Prior to Git v2.6.0 the config item was gc.pruneworktreesexpire
1245 # however we just always use the newer name no matter what Git version
1246 expiry
="$(git config --get gc.worktreePruneExpire 2>/dev/null)" ||
:
1247 eval git worktree prune
--expire '"${expiry:-3.months.ago}"' "${quiet:+>/dev/null 2>&1}" ||
:
1250 # If we have a logs directory or a worktrees directory expire the ref logs now
1251 # Note that Git itself does not use either --rewrite or --updateref, so neither do we
1252 ! [ -d logs
] && ! [ -d worktrees
] ||
eval git reflog expire
--all "${quiet:+>/dev/null 2>&1}" ||
:
1254 # git rerere does it right and handles its own default/config'd expiration values
1255 ! [ -d rr-cache
] ||
eval git rerere gc
"${quiet:+>/dev/null 2>&1}" ||
:
1258 ! [ -e .gc_failed
] ||
exit 1
1259 rm -f .gc_in_progress
# make sure
1260 touch .gc_in_progress
# it's truly fresh
1261 rm -f bundles
/* objects
/pack
/pack-
*.bndl
1262 # These only exist for a brief time before the packs loose their _f suffix
1263 # "Push Pack Redux" does not apply to these since they were only ever present with _f
1264 rm -f objects
/pack
/pack-
*_f.keep
1265 # This is perhaps a bit aggressive in that if we're suffering from "Push Pack Redux"
1266 # and somehow we get run again immediately after the run where "Push Pack Redux" happened
1267 # and we have garbage collection forced, there's just the barest, almost negligible,
1268 # possibility that the "Push Pack Redux" ref updates _still_ have not happened and we
1269 # should not be removing _r .keep files. None of the normal Girocco processing can
1270 # cause this. The second run of this script would have to use the force gc option
1271 # for it to even be possible in the first place. What's much more likely is that
1272 # the initial run of this script was somehow interrupted in the middle before it
1273 # could get rid of the _r .keep file itself in which case it's better to get rid of
1274 # it now to avoid keeping something around that would perturb our nice and neat gc
1275 rm -f objects
/pack
/pack-
*_r.keep
1276 # We will add .keep files for _u and _l packs if and when we run phase III
1277 # Otherwise they need to not have any .keep files during phases I and II
1278 rm -f objects
/pack
/pack-
*_
[ul
].keep
1280 # We need to make sure that any non-Girocco (barely tolerated) Git object creation
1281 # activity will be able to "freshen" the pack containing a pre-existing object
1282 # that's being written. This really should not be necessary as the pre-receive
1283 # hook should make sure this takes place for any incoming pushes.
1284 # However, do it here anyway just in case.
1285 make_packs_ugw objects
/pack
1287 # This is only effective with Git v2.3.5 and later and it will only matter when
1288 # we are using one of the "internal_rev_list" modes of pack-objects
1289 # (the combine-packs.sh script never uses any of those modes)
1290 # The "git repack" and "git prune" commands always set this internally themselves
1291 # It makes no difference if there's no repository corruption
1292 GIT_REF_PARANOIA
=1 && export GIT_REF_PARANOIA
1294 # All of the options we might want to use with pack-objects were supported
1295 # at some point prior to Git version v1.6.6 which is the minimum version that
1296 # Girocco now requires. Except for one (--use-bitmap-index). Several of them
1297 # are "boiler plate" options we always want to use so we bundle them up here.
1298 pkopt
="--delta-base-offset --keep-true-parents --non-empty --all-progress-implied"
1299 # We want to use --include-tag, but before Git v2.10.1 it would leave out
1300 # "middle" tags (e.g. a tag of a tag of a commit would omit the tagged tag)
1301 # See http://repo.or.cz/git.git/b773ddea2cd3b08c for details
1302 # ("pack-objects: walk tag chains for --include-tag", 2016-09-07, v2.10.1)
1303 # This is not a free check as it matches all refs against refs/tags/ then
1304 # peels all the annotated tags and checks for inclusion. The situation in
1305 # which it would add a tag that was not already included by a reachability
1306 # trace that included tag starting points can only occur if a new tag gets
1307 # pushed during gc pointing to something that would have been packed anyway.
1308 # But, it could happen and, really, compared to gc as a whole it's not that
1309 # expensive to perform (provided we do not get an unconnected pack).
1310 [ -z "$var_have_git_2101" ] || pkopt
="$pkopt --include-tag"
1311 pkopt
="$pkopt ${quiet:---progress} $packopts"
1313 # The git pack-objects command only supports bitmaps if all objects are being
1314 # packed (the "--all" option) and the "--stdout" option is NOT being used.
1315 # Additionally, while packing, if any encountered reachable objects are
1316 # determined to be "not wanted" then no bitmap index will be written anyway.
1317 # While it is theoretically possible that a project with a non-empty alternates
1318 # file ends up packing all objects (because it does not actually use any of the
1319 # objects found in the alternates), it's very unlikely. And, in the unlikely
1320 # event that did occur, clients would see a message about only using one bitmap
1321 # because Git can only use one bitmap at a time and at least one of the
1322 # alternates is bound to have a bitmap. Therefore if we see a non-empty
1323 # alternates file, we disable writing bitmaps which avoids the warning and any
1324 # possibility of a client warning as well. Also if we are running anything
1325 # before Git v2.1.0 (the effective version for repack.writeBitmaps=true) then
1326 # we also always disable bitmap writing.
1328 [ -z "$var_have_git_210" ] || wbmopt
="--write-bitmap-index"
1329 # More recent versions of pack-objects have optimizations when not using the
1330 # --local option. If we do not have any alternates it's a pointless option.
1331 # If we do have alternates we need to skip writing a bitmap and we cannot
1332 # have a bundle since it must contain all objects.
1333 if [ -n "$isfork" ]; then
1347 [ -n "$wbmopt" ] || wbmstr
=" (bitmaps disabled)"
1348 progress
"~ [$proj] running primary full gc pack-objects$wbmstr ($(date))"
1351 ! has_forks_with_alternates
"$proj" || gotforks
=1
1353 # To avoid "Push Pack Redux" (see docs/technical/gc.txt), after collecting the
1354 # initial preexisting non-keep pack list, we rename them so that an incoming push
1355 # pack cannot possibly experience a pack name collision. Git does not require
1356 # use of the "default" pack names, simply that the proper extensions are used.
1357 # We rename to insert an "_r" just before the extension to avoid "Push Pack Redux"
1358 # name collisions. Later on we may create an "unreachable" pack for hard-linking
1359 # down into forks and it will have an "_u" inserted just before its extension.
1360 packlist
="$(list_packs -C objects/pack --all --exclude-no-idx --exclude-keep --quiet .)" ||
:
1362 for oldpack
in $packlist; do
1363 oldpack
="${oldpack%.pack}"
1364 [ -f "objects/pack/$oldpack.pack" ] ||
{
1365 echo >&2 "[$proj] unable to list old pack files"
1368 case "$oldpack" in pre-auto-gc-
[12])
1369 # we never disturb pre-auto-gc-1 or pre-auto-gc-2 packs
1372 oldpackhex
="${oldpack#pack-}"
1373 if [ "${oldpackhex#*[!0-9a-fA-F]}" != "$oldpackhex" ]; then
1374 # names not exclusively hexadecimal do not need renaming
1377 # _l packs are treated like still-unpacked loose objects
1380 # _f packs can only be left over from a previously interrupted gc;
1381 # they need to be renamed to _r now so they're not confused with
1382 # any freshly generated "final" packs (and we already removed
1383 # any pre-existing *_f.keep files so we're good to go)
1386 oldpacks
="${oldpacks:+$oldpacks }$oldpack"
1390 rename_pack
"objects/pack/$oldpack" "objects/pack/${oldpack%_f}_r" ||
{
1391 echo >&2 "[$proj] unable to rename old pack files"
1394 # If the oldpack has a .keep now it means a "Push Pack Redux" is actually
1395 # in progress at this moment and we need to .keep the renamed pack,
1396 # otherwise no "Push Pack Redux" has started yet or it has already finished.
1397 # In either case we're okay because if it's just finished then all ref
1398 # changes have already been made so we don't need a .keep and we will
1399 # see the ref changes and grab all the objects via a reachability trace.
1400 # If it hasn't started yet that's okay because we're done moving that
1401 # name so a complete pack will appear under the old name that we'll
1403 if [ -f "objects/pack/$oldpack.keep" ]; then
1404 echo "Push Pack Redux" >"objects/pack/${oldpack%_f}_r.keep"
1406 oldpacks
="${oldpacks:+$oldpacks }${oldpack%_f}_r"
1410 # We wish to keep deltas from our last full pack so if we're not redeltaing
1411 # then make sure the .pack associated with the .bitmap has a newer mod time
1412 # (If there is no .bitmap then touch the pack with the most objects instead.)
1413 if [ -z "$newdeltas" ]; then
1414 bmpack
="$(list_packs --exclude-no-bitmap --exclude-no-idx --max-matches 1 objects/pack)"
1415 [ -n "$bmpack" ] || bmpack
="$(list_packs --exclude-no-idx --max-matches 1 --object-limit -1 --include-boundary objects/pack)"
1416 if [ -n "$bmpack" ] && [ -f "$bmpack" ] && [ -s "$bmpack" ]; then
1418 touch -c "$bmpack" 2>/dev
/null ||
:
1419 # We must touch .gc_in_progress here to avoid $bmpack looking
1420 # like it's been "freshened" when redundant packs are removed
1421 # It's okay if they have the same mod time, but POSIX does not
1422 # guarantee an ordering for the "touching" that occurs which is
1423 # why this must be a separate command but needs no "sleep 1"
1424 touch .gc_in_progress
1428 # Now we need to make sure that any "freshening" that takes place will actually
1429 # result in a "newer" modification time than the .gc_in_progress file now has
1432 # We run git pack-objects from the repack subdirectory so we can force
1433 # optimized packs to be generated even for repositories that do not have any
1435 packs
="$(git --git-dir=repack pack-objects </dev/null \
1436 $pkopt --all $newdeltas $lclopt ${wbmopt:---honor-pack-keep} "$@
" repack/alt/pack/pack)"
1437 v_cnt packcnt
$packs
1438 [ $packcnt -eq 1 ] || makebndl
=
1444 progress
"~ [$proj] running supplementary gc pack-objects ($(date))"
1446 # Add the "supplementary" refs
1447 compute_extra_reachables
>>repack
/packed-refs
1449 # Now calculate the final repack signature hash
1450 # Since we do _allow_ worktrees and we do _allow_ ref logs,
1451 # the ref logs of such must be accounted for here as well
1452 _rpksig
="$(cat_all_ref_logs repack/packed-refs | sig_hash_stdin)"
1453 echo "$_rpksig" >repack
/repack.sighash
1455 # Subtract the primary refs
1456 GIT_ALTERNATE_OBJECT_DIRECTORIES
="$PWD/repack/alt"
1457 export GIT_ALTERNATE_OBJECT_DIRECTORIES
1459 # For this one we MUST use --local and MUST NOT use --write-bitmap-index
1460 # However, if there is a "logs" subdirectory we need to use --reflog
1461 # We do add it, just in case, if the linked working trees dir is present
1462 # We do not add --indexed-objects as that requires v2.2.0 and it's unclear
1463 # if it properly includes linked working tree index files or not. The
1464 # above compute_extra_reachables has already included all index trees (thereby
1465 # providing proper --indexed-objects support for all Git versions) making the
1466 # option completely unnecessary.
1468 ! [ -d logs
] && ! [ -d worktrees
] || rflopt
=--reflog
1469 spacks
="$(git --git-dir=repack pack-objects </dev/null \
1470 $pkopt --honor-pack-keep --all $rflopt $newdeltas --local "$@
" repack/alt/pack/pack)"
1476 # There's nothing to do for Phase III unless we have forks that refer to our
1477 # project from their alternates file
1480 if [ -n "$gotforks" ]; then
1482 progress
"~ [$proj] running keep-unreachable gc pack-objects for forks ($(date))"
1484 # If we are a fork, any pre-existing _u packs need to have a .keep
1485 # for this phase and be added to the hlpacks list otherwise (we are
1486 # not a fork) pre-existing _u packs are anomalies to be treated like
1487 # regular non-_u packs
1488 if [ -n "$isfork" ]; then
1489 for upack
in $
(find -L objects
/pack
-mindepth 1 -maxdepth 1 -name "pack-$octet20*_[ul].pack" -print); do
1490 upack
="${upack%.pack}"
1491 [ -e "$upack.keep" ] ||
echo "unreachable" >"$upack.keep"
1492 case "$upack" in *_l
);;*)
1493 hlpacks
="${hlpacks:+$hlpacks }${upack#objects/pack/pack-}"
1497 # Using either --no-reuse-delta or --no-reuse-object together with the
1498 # --keep-unreachable option is a very, very, very bad idea when good
1499 # packs are the desired outcome. If newdeltas are being generated
1500 # then we pack to a temp name, and use combine-packs.sh to get a better
1501 # pack as the result to avoid making a bad --keep-unreachable pack
1503 [ -z "$newdeltas" ] || pfx
="ku"
1504 upacks
="$(git --git-dir=repack pack-objects </dev/null \
1505 $pkopt --honor-pack-keep --all $rflopt --keep-unreachable --local "$@
" repack/alt/pack/${pfx}pack)"
1506 if [ -n "$upacks" ] && [ -n "$newdeltas" ]; then
1507 progress
"~ [$proj] rebuilding keep-unreachable pack deltas"
1510 printf "repack
/alt
/pack
/${pfx}pack-
%s.pack
\n" $oldupacks |
1511 run_combine_packs --names --weak-naming --non-empty --all-progress-implied ${quiet:---progress} \
1512 $packopts $newdeltas "$@
" repack/alt/pack/pack)"
1513 eval rm -f "$(printf \""repack
/alt
/pack
/${pfx}pack-
%s.
*"\"" " $oldupacks)"
1515 for upack
in $upacks; do
1516 rename_pack
"repack/alt/pack/pack-$upack" "repack/alt/pack/pack-${upack}_u"
1518 rm -f objects
/pack
/pack-
*_
[ul
].keep
1519 [ -z "$hlpacks" ] && [ -z "$upacks" ] ||
1520 progress
"~ [$proj] hard-linking keep-unreachable pack(s) into immediate child forks"
1522 # We have to update the lastparentgc time in the child forks even if they do not get any
1523 # new "unreachable packs" because they need to run gc just in case the parent now has some
1524 # objects that used to only be in the child so they can be removed from the child.
1525 # For example, a "patch" might be developed first in a fork and then later accepted into
1526 # the parent in which case the objects making up the patch in the child fork are now
1527 # redundant (since they're now in the parent as well) and need to be removed from the
1528 # child fork which can only happen if the child fork runs gc.
1529 lastparentgc
="$(date "$datefmt")"
1531 # It is enough to copy objects just one level down and get_repo_list
1532 # takes a regular expression (which is automatically prefixed with '^')
1533 # so we can easily match forks exactly one level down from this project
1535 get_repo_list
"$forkdir/[^/:][^/:]*:" |
1537 # Ignore forks that do not exist or are symbolic links
1538 ! [ -L "$cfg_reporoot/$fork.git" ] && [ -d "$cfg_reporoot/$fork.git" ] ||
1540 # Or have an empty alternates file
1541 ! is_empty_alternates_file
"$cfg_reporoot/$fork.git/objects/info/alternates" ||
1544 # Match hlpacks in parent project if any
1545 if [ -n "$hlpacks" ]; then
1546 mkdir
-p "$cfg_reporoot/$fork.git/objects/pack"
1547 eval ln -f "$(printf '"objects
/pack
/pack-
%s.pack
" ' $hlpacks)" \
1548 "$(printf '"objects
/pack
/pack-
%s.idx
" ' $hlpacks)" \
1549 '"$cfg_reporoot/$fork.git/objects/pack/"'
1552 # Match upacks in repack/alt area if any
1553 if [ -n "$upacks" ]; then
1554 mkdir
-p "$cfg_reporoot/$fork.git/objects/pack"
1555 eval ln -f "$(printf '"repack
/alt
/pack
/pack-
%s_u.pack
" ' $upacks)" \
1556 "$(printf '"repack
/alt
/pack
/pack-
%s_u.idx
" ' $upacks)" \
1557 '"$cfg_reporoot/$fork.git/objects/pack/"'
1560 if ! [ -e "$cfg_reporoot/$fork.git/.needsgc" ]; then
1561 # Trigger a mini gc in the fork if it now has too many packs
1562 fpackcnt
="$(list_packs --quiet --count --exclude-no-idx --exclude-keep "$cfg_reporoot/$fork.git
/objects
/pack
")" ||
:
1563 if [ -n "$fpackcnt" ] && [ "$fpackcnt" -ge 20 ]; then
1564 >"$cfg_reporoot/$fork.git/.needsgc"
1567 [ -z "$runupdate" ] || git
--git-dir="$cfg_reporoot/$fork.git" update-server-info
1568 # Update the fork's lastparentgc date (must be more recent than $gcstart)
1569 git
--git-dir="$cfg_reporoot/$fork.git" config gitweb.lastparentgc
"$lastparentgc"
1573 # Now move any primary/supplementary packs back into objects/pack
1574 # then drop any "unfreshened" redundant packs and clear repack/alt
1576 # First make sure the primary pack(s) have the most recent mod time
1577 if [ -n "$packs" ]; then
1578 [ -z "$spacks" ] ||
sleep 1
1579 printf 'repack/alt/pack/pack-%s.pack\n' $packs |
xargs touch -c 2>/dev
/null ||
:
1582 # Move the packs into place but with a _f suffix and a .keep file for now
1583 for pack
in $packs $spacks; do
1584 rename_pack
"repack/alt/pack/pack-$pack" "objects/pack/pack-${pack}_f"
1585 [ -e "objects/pack/pack-${pack}_f.keep" ] ||
1586 echo "final" >"objects/pack/pack-${pack}_f.keep"
1589 # It's possible that one of the $oldpacks had a .bitmap, got renamed (along
1590 # with its .bitmap) and then got "freshened" causing us to not remove it
1591 # However, if $wbmopt is set we most likely now have TWO .bitmap packs!
1592 # This can produce ugly warnings we don't want and possibly get the wrong
1593 # bitmap used since only one .bitmap file can ever be used by Git.
1594 # If this has happened, the .bitmap we want to discard will always have
1595 # an _r suffix so we can just zap any such now since it will leave the pack.
1596 [ -z "$wbmopt" ] ||
rm -f objects
/pack
/pack-
*_r.bitmap ||
:
1598 # Remove the redundant packs that have not since been "freshened"
1599 # This does not completely eliminate the race condition window (Girocco's own
1600 # activites -- gc/fetch/receive are immune to the race) but it substantially
1601 # shrinks it down to just the time after the find but before the following rm
1603 [ -z "$oldpacks" ] ||
1604 printf 'objects/pack/%s.pack\n' $oldpacks |
1605 LC_ALL
=C
sort >repack
/oldpacks
1606 find -L objects
/pack
-maxdepth 1 -type f
-name "pack-$octet20*.pack" -newer .gc_in_progress
-print |
1607 LC_ALL
=C
sort >repack
/freshened
1608 deadpacks
="$(LC_ALL=C join -v 1 repack/oldpacks repack/freshened | LC_ALL=C sed 's/\.pack$//')"
1609 [ -z "$deadpacks" ] ||
1610 eval echo "$(printf '"%s
".* ' $deadpacks)" |
xargs rm -f ||
:
1612 # No need for this anymore
1613 rm -rf repack
/alt objects
/pack
/repack
1614 unset GIT_ALTERNATE_OBJECT_DIRECTORIES
1620 progress
"~ [$proj] running gc prune-packed"
1622 # We do not want the redundant packs or any new "--keep-unreachable" pack(s) to be
1623 # present while running prune-packed. We try to guarantee that any loose object
1624 # (or any object present in a pack with an _l suffix which was created by mini gc)
1625 # that's unreachable persists for at least one $Girocco::Config::min_gc_interval
1626 # (not withstanding administrator interference to force earlier gc to occur).
1627 # If we were to include the redundant/keep-unreachable pack(s) when running
1628 # prune-packed and a loose unreachable object happened to be duplicated in one
1629 # of them we would end up removing it too soon and void our guarantee.
1630 git prune-packed
$quiet
1632 progress
"~ [$proj] running loose objects gc pack-objects ($(date))"
1634 # Although Git v2.10.0 and later support a --pack-loose-unreachable option,
1635 # we MUST NOT use it for these reasons:
1636 # 1) We're not interested in expensive "unreachable" at this point, only "loose"
1637 # 2) It produces simply horrid packs about 3.8x times larger than they should be
1638 # 3) We don't require anything more than Git v1.6.6
1639 # The only way we could see any _o pack files at this point is if one got
1640 # "freshened" while we were running gc. If that happens then it gets to live on
1641 # until the next full gc and we need to include it in the loose repack here.
1642 lpacks
="$(list_packs --exclude-no-idx --exclude-no-sfx _l --exclude-no-sfx _o --quiet objects/pack |
1643 run_combine_packs --replace --names --loose --weak-naming --non-empty --honor-pack-keep \
1644 --all-progress-implied ${quiet:---progress} $packopts $newdeltas "$@
")"
1646 if [ -n "$lpacks" ]; then
1647 # Make sure any primary pack(s) have a more recent mod time than "unreachable" objects packs
1648 if [ -n "$packs" ]; then
1650 printf 'objects/pack/pack-%s_f.pack\n' $packs |
xargs touch -c 2>/dev
/null ||
:
1652 # We need to identify these packs later so we don't combine_packs them
1653 for objpack
in $lpacks; do
1654 rename_pack
"objects/pack/pack-$objpack" "objects/pack/pack-${objpack}_o" ||
:
1658 # Polish up the final packs now
1659 rm -f objects
/pack
/pack-
*_f.keep
1660 for pack
in $packs $spacks; do
1661 rename_pack
"objects/pack/pack-${pack}_f" "objects/pack/pack-$pack"
1664 if [ -n "$lpacks" ]; then
1665 # Finally zap the corresponding loose objects
1666 progress
"~ [$proj] running packed loose objects gc prune-packed"
1667 git prune-packed
$quiet
1670 ! [ -e .gc_failed
] ||
exit 1
1671 # These, if they exist, are now meaningless and need to be removed
1672 rm -f gfi-packs .needsgc .needspack .needspackgc
1674 # Make sure this stays up to date
1675 git update-server-info
1677 # We must make loose objects group writable so that they
1678 # can be freshened by other pushers. Technically we need only do this for
1679 # push projects but to enable mirror projects to be more easily converted to
1680 # push projects, we go ahead and do it for all projects.
1681 # By the time we get here we really shouldn't have any of these, but just in case.
1682 { find -L objects
/$octet -type f
-name "$octet19*" -exec chmod ug
+w
'{}' + ||
:; } 2>/dev
/null
1684 # darcs mirrors have a xxx.log file that will grow endlessly
1685 # if this is a mirror and the file exists, shorten it to 10000 lines
1686 # also take this opportunity to optimize the darcs repo
1687 if ! [ -e .nofetch
] && [ -n "$cfg_mirror" ]; then
1688 url
="$(config_get baseurl)" ||
:
1689 case "$url" in darcs
://* | darcs
+http
://* | darcs
+https
://*)
1690 if [ -n "$cfg_mirror_darcs" ]; then
1692 basedarcs
="$(basename "${url#darcs*:/}")"
1693 if [ -f "$basedarcs.log" ]; then
1694 tail -n 10000 "$basedarcs.log" >"$basedarcs.log.$$"
1695 mv -f "$basedarcs.log.$$" "$basedarcs.log"
1697 if [ -d "$basedarcs.darcs" ]; then
1699 cd "$basedarcs.darcs"
1700 # without show_progress suppress non-error output
1701 [ "${show_progress:-0}" != "0" ] ||
exec >/dev
/null
1702 # Note that this does not optimize _darcs/inventories/ :(
1710 # Create a matching .bndl header file for the all-in-one pack we just created
1711 # but only if we're not a fork (otherwise the bundle would not be complete)
1712 # and we are running at least Git version 1.7.2 (pack_is_complete always fails otherwise)
1713 if [ -n "$makebndl" ] && [ -n "$var_have_git_172" ]; then
1714 # There should only be one pack in $packs but do some checking...
1715 # The one we just created will have a .idx and will NOT have a .keep
1716 progress
"~ [$proj] creating downloadable bundle header"
1719 IFS
= read -r curhead
<repack
/HEAD.orig ||
:
1721 [ -s "objects/pack/pack-$packs.pack" ] &&
1722 [ -s "objects/pack/pack-$packs.idx" ] &&
1723 ! [ -e "objects/pack/pack-$packs.keep" ] &&
1724 pkhead
="$(pack_is_complete "$PWD/objects
/pack
/pack-
$packs.pack
" \
1725 "$PWD/repack
/packed-refs.orig
" "$curhead")"
1727 pkbase
="objects/pack/pack-$packs"
1729 if [ -n "$pkbase" ] && [ -n "$pkhead" ]; then
1732 case "$curhead" in "ref: refs/"?
*|
"ref:refs/"?
*|
"refs/"?
*)
1733 symref
="${curhead#ref:}"
1734 symref
="${symref# }"
1737 [ -z "$cfg_httpbundleurl" ] || bndlurl
=" url=$cfg_httpbundleurl/$proj.git/clone.bundle"
1738 echo "# v2 git bundle"
1739 LC_ALL
=C
sed -ne "/^$octet20$hexdig* refs\/[^ $tab]*\$/ p" <repack
/packed-refs.orig
1740 if [ -n "$symref" ]; then
1741 printf "$pkhead HEAD\0symref=HEAD:%s%s\n" "$symref" "$bndlurl"
1743 if [ -n "$bndlurl" ]; then
1744 printf "$pkhead HEAD\0%s\n" "${bndlurl# }"
1751 bndletag
="$("$cfg_basedir/bin
/rangecgi
" --etag -m 1 "$pkbase.bndl
" "$pkbase.pack
")" ||
:
1752 bndlsha
="$(printf '%s' "$bndletag" | git hash-object --stdin)" ||
:
1753 if [ -n "$bndletag" ]; then
1754 case "$bndlsha" in $octet20*)
1755 bndlshatrailer
="${bndlsha#????????}"
1756 bndlshaprefix
="${bndlsha%$bndlshatrailer}"
1757 bndlname
="$(TZ=UTC date +%Y%m%d_%H%M%S)-${bndlshaprefix:-0}"
1758 [ -d bundles
] || mkdir bundles
1759 echo "${pkbase#objects/pack/}.bndl" >"bundles/$bndlname"
1760 echo "${pkbase#objects/pack/}.pack" >>"bundles/$bndlname"
1761 ln -s -f -n "$bndlname" bundles
/latest
1767 # Record the size of this repo as the sum of its clone packed-refs + *.pack sizes as 1024-byte blocks
1768 eval "reposizek=$(( $(
1769 echo 0 $(du -k repack/packed-refs.orig $(printf 'objects/pack/pack-%s.pack ' $packs) 2>/dev/null |
1770 LC_ALL=C awk '{print $1}') |
1771 LC_ALL=C sed -e 's/ / + /g') ))"
1772 config_set_raw girocco.reposizek
"${reposizek:-0}"
1774 read -r rsighash
<repack
/packed-refs.sighash ||
:
1775 read -r repacksig
<repack
/repack.sighash ||
:
1777 # Now we're finally done with this
1780 # Update various "signature" hashes used to help determine whether or
1781 # not it's okay to skip gc in the future (because there's nothing to do)
1783 psighash
="$(if [ -n "$packs" ] || [ -n "$spacks" ]; then
1784 printf 'pack-%s.pack\n' $packs $spacks
1785 fi | LC_ALL=C sort | sig_hash_stdin)"
1786 config_set_raw girocco.gcsig.packs
"$psighash"
1787 config_set_raw girocco.gcsig.refs
"$rsighash"
1788 config_set_raw girocco.gcsig.repack
"$repacksig"
1790 # We use $gcstart here to avoid a race where a push occurs during the gc itself
1791 # and the next future gc could be incorrectly skipped if we used the current
1792 # timestamp here instead
1793 config_set lastgc
"$gcstart"
1796 progress
"- [$proj] garbage check ($(date))"