5 #include "environment.h"
8 #include "parse-options.h"
10 #include "run-command.h"
11 #include "server-info.h"
14 #include "string-list.h"
18 #include "prune-packed.h"
19 #include "object-store-ll.h"
20 #include "promisor-remote.h"
23 #include "pack-bitmap.h"
26 #define ALL_INTO_ONE 1
27 #define LOOSEN_UNREACHABLE 2
33 static int pack_everything
;
34 static int delta_base_offset
= 1;
35 static int pack_kept_objects
= -1;
36 static int write_bitmaps
= -1;
37 static int use_delta_islands
;
38 static int run_update_server_info
= 1;
39 static char *packdir
, *packtmp_name
, *packtmp
;
41 static const char *const git_repack_usage
[] = {
42 N_("git repack [<options>]"),
46 static const char incremental_bitmap_conflict_error
[] = N_(
47 "Incremental repacks are incompatible with bitmap indexes. Use\n"
48 "--no-write-bitmap-index or disable the pack.writeBitmaps configuration."
51 struct pack_objects_args
{
53 const char *window_memory
;
56 const char *max_pack_size
;
63 static int repack_config(const char *var
, const char *value
, void *cb
)
65 struct pack_objects_args
*cruft_po_args
= cb
;
66 if (!strcmp(var
, "repack.usedeltabaseoffset")) {
67 delta_base_offset
= git_config_bool(var
, value
);
70 if (!strcmp(var
, "repack.packkeptobjects")) {
71 pack_kept_objects
= git_config_bool(var
, value
);
74 if (!strcmp(var
, "repack.writebitmaps") ||
75 !strcmp(var
, "pack.writebitmaps")) {
76 write_bitmaps
= git_config_bool(var
, value
);
79 if (!strcmp(var
, "repack.usedeltaislands")) {
80 use_delta_islands
= git_config_bool(var
, value
);
83 if (strcmp(var
, "repack.updateserverinfo") == 0) {
84 run_update_server_info
= git_config_bool(var
, value
);
87 if (!strcmp(var
, "repack.cruftwindow"))
88 return git_config_string(&cruft_po_args
->window
, var
, value
);
89 if (!strcmp(var
, "repack.cruftwindowmemory"))
90 return git_config_string(&cruft_po_args
->window_memory
, var
, value
);
91 if (!strcmp(var
, "repack.cruftdepth"))
92 return git_config_string(&cruft_po_args
->depth
, var
, value
);
93 if (!strcmp(var
, "repack.cruftthreads"))
94 return git_config_string(&cruft_po_args
->threads
, var
, value
);
95 return git_default_config(var
, value
, cb
);
99 * Adds all packs hex strings to either fname_nonkept_list or
100 * fname_kept_list based on whether each pack has a corresponding
101 * .keep file or not. Packs without a .keep file are not to be kept
102 * if we are going to pack everything into one file.
104 static void collect_pack_filenames(struct string_list
*fname_nonkept_list
,
105 struct string_list
*fname_kept_list
,
106 const struct string_list
*extra_keep
)
112 if (!(dir
= opendir(packdir
)))
115 while ((e
= readdir(dir
)) != NULL
) {
119 if (!strip_suffix(e
->d_name
, ".pack", &len
))
122 for (i
= 0; i
< extra_keep
->nr
; i
++)
123 if (!fspathcmp(e
->d_name
, extra_keep
->items
[i
].string
))
126 fname
= xmemdupz(e
->d_name
, len
);
128 if ((extra_keep
->nr
> 0 && i
< extra_keep
->nr
) ||
129 (file_exists(mkpath("%s/%s.keep", packdir
, fname
)))) {
130 string_list_append_nodup(fname_kept_list
, fname
);
132 struct string_list_item
*item
;
133 item
= string_list_append_nodup(fname_nonkept_list
,
135 if (file_exists(mkpath("%s/%s.mtimes", packdir
, fname
)))
136 item
->util
= (void*)(uintptr_t)CRUFT_PACK
;
141 string_list_sort(fname_kept_list
);
144 static void remove_redundant_pack(const char *dir_name
, const char *base_name
)
146 struct strbuf buf
= STRBUF_INIT
;
147 struct multi_pack_index
*m
= get_local_multi_pack_index(the_repository
);
148 strbuf_addf(&buf
, "%s.pack", base_name
);
149 if (m
&& midx_contains_pack(m
, buf
.buf
))
150 clear_midx_file(the_repository
);
151 strbuf_insertf(&buf
, 0, "%s/", dir_name
);
152 unlink_pack_path(buf
.buf
, 1);
153 strbuf_release(&buf
);
156 static void prepare_pack_objects(struct child_process
*cmd
,
157 const struct pack_objects_args
*args
,
160 strvec_push(&cmd
->args
, "pack-objects");
162 strvec_pushf(&cmd
->args
, "--window=%s", args
->window
);
163 if (args
->window_memory
)
164 strvec_pushf(&cmd
->args
, "--window-memory=%s", args
->window_memory
);
166 strvec_pushf(&cmd
->args
, "--depth=%s", args
->depth
);
168 strvec_pushf(&cmd
->args
, "--threads=%s", args
->threads
);
169 if (args
->max_pack_size
)
170 strvec_pushf(&cmd
->args
, "--max-pack-size=%s", args
->max_pack_size
);
171 if (args
->no_reuse_delta
)
172 strvec_pushf(&cmd
->args
, "--no-reuse-delta");
173 if (args
->no_reuse_object
)
174 strvec_pushf(&cmd
->args
, "--no-reuse-object");
176 strvec_push(&cmd
->args
, "--local");
178 strvec_push(&cmd
->args
, "--quiet");
179 if (delta_base_offset
)
180 strvec_push(&cmd
->args
, "--delta-base-offset");
181 strvec_push(&cmd
->args
, out
);
187 * Write oid to the given struct child_process's stdin, starting it first if
190 static int write_oid(const struct object_id
*oid
,
191 struct packed_git
*pack UNUSED
,
192 uint32_t pos UNUSED
, void *data
)
194 struct child_process
*cmd
= data
;
197 if (start_command(cmd
))
198 die(_("could not start pack-objects to repack promisor objects"));
201 xwrite(cmd
->in
, oid_to_hex(oid
), the_hash_algo
->hexsz
);
202 xwrite(cmd
->in
, "\n", 1);
218 struct generated_pack_data
{
219 struct tempfile
*tempfiles
[ARRAY_SIZE(exts
)];
222 static struct generated_pack_data
*populate_pack_exts(const char *name
)
225 struct strbuf path
= STRBUF_INIT
;
226 struct generated_pack_data
*data
= xcalloc(1, sizeof(*data
));
229 for (i
= 0; i
< ARRAY_SIZE(exts
); i
++) {
231 strbuf_addf(&path
, "%s-%s%s", packtmp
, name
, exts
[i
].name
);
233 if (stat(path
.buf
, &statbuf
))
236 data
->tempfiles
[i
] = register_tempfile(path
.buf
);
239 strbuf_release(&path
);
243 static void repack_promisor_objects(const struct pack_objects_args
*args
,
244 struct string_list
*names
)
246 struct child_process cmd
= CHILD_PROCESS_INIT
;
248 struct strbuf line
= STRBUF_INIT
;
250 prepare_pack_objects(&cmd
, args
, packtmp
);
254 * NEEDSWORK: Giving pack-objects only the OIDs without any ordering
255 * hints may result in suboptimal deltas in the resulting pack. See if
256 * the OIDs can be sent with fake paths such that pack-objects can use a
257 * {type -> existing pack order} ordering when computing deltas instead
258 * of a {type -> size} ordering, which may produce better deltas.
260 for_each_packed_object(write_oid
, &cmd
,
261 FOR_EACH_OBJECT_PROMISOR_ONLY
);
264 /* No packed objects; cmd was never started */
265 child_process_clear(&cmd
);
271 out
= xfdopen(cmd
.out
, "r");
272 while (strbuf_getline_lf(&line
, out
) != EOF
) {
273 struct string_list_item
*item
;
276 if (line
.len
!= the_hash_algo
->hexsz
)
277 die(_("repack: Expecting full hex object ID lines only from pack-objects."));
278 item
= string_list_append(names
, line
.buf
);
281 * pack-objects creates the .pack and .idx files, but not the
282 * .promisor file. Create the .promisor file, which is empty.
284 * NEEDSWORK: fetch-pack sometimes generates non-empty
285 * .promisor files containing the ref names and associated
286 * hashes at the point of generation of the corresponding
287 * packfile, but this would not preserve their contents. Maybe
288 * concatenate the contents of all .promisor files instead of
289 * just creating a new empty file.
291 promisor_name
= mkpathdup("%s-%s.promisor", packtmp
,
293 write_promisor_file(promisor_name
, NULL
, 0);
295 item
->util
= populate_pack_exts(item
->string
);
300 if (finish_command(&cmd
))
301 die(_("could not finish pack-objects to repack promisor objects"));
304 struct pack_geometry
{
305 struct packed_git
**pack
;
306 uint32_t pack_nr
, pack_alloc
;
310 static uint32_t geometry_pack_weight(struct packed_git
*p
)
312 if (open_pack_index(p
))
313 die(_("cannot open index for %s"), p
->pack_name
);
314 return p
->num_objects
;
317 static int geometry_cmp(const void *va
, const void *vb
)
319 uint32_t aw
= geometry_pack_weight(*(struct packed_git
**)va
),
320 bw
= geometry_pack_weight(*(struct packed_git
**)vb
);
329 static void init_pack_geometry(struct pack_geometry
**geometry_p
,
330 struct string_list
*existing_kept_packs
,
331 const struct pack_objects_args
*args
)
333 struct packed_git
*p
;
334 struct pack_geometry
*geometry
;
335 struct strbuf buf
= STRBUF_INIT
;
337 *geometry_p
= xcalloc(1, sizeof(struct pack_geometry
));
338 geometry
= *geometry_p
;
340 for (p
= get_all_packs(the_repository
); p
; p
= p
->next
) {
341 if (args
->local
&& !p
->pack_local
)
343 * When asked to only repack local packfiles we skip
344 * over any packfiles that are borrowed from alternate
345 * object directories.
349 if (!pack_kept_objects
) {
351 * Any pack that has its pack_keep bit set will appear
352 * in existing_kept_packs below, but this saves us from
353 * doing a more expensive check.
359 * The pack may be kept via the --keep-pack option;
360 * check 'existing_kept_packs' to determine whether to
364 strbuf_addstr(&buf
, pack_basename(p
));
365 strbuf_strip_suffix(&buf
, ".pack");
367 if (string_list_has_string(existing_kept_packs
, buf
.buf
))
373 ALLOC_GROW(geometry
->pack
,
374 geometry
->pack_nr
+ 1,
375 geometry
->pack_alloc
);
377 geometry
->pack
[geometry
->pack_nr
] = p
;
381 QSORT(geometry
->pack
, geometry
->pack_nr
, geometry_cmp
);
382 strbuf_release(&buf
);
385 static void split_pack_geometry(struct pack_geometry
*geometry
, int factor
)
389 off_t total_size
= 0;
391 if (!geometry
->pack_nr
) {
392 geometry
->split
= geometry
->pack_nr
;
397 * First, count the number of packs (in descending order of size) which
398 * already form a geometric progression.
400 for (i
= geometry
->pack_nr
- 1; i
> 0; i
--) {
401 struct packed_git
*ours
= geometry
->pack
[i
];
402 struct packed_git
*prev
= geometry
->pack
[i
- 1];
404 if (unsigned_mult_overflows(factor
, geometry_pack_weight(prev
)))
405 die(_("pack %s too large to consider in geometric "
409 if (geometry_pack_weight(ours
) < factor
* geometry_pack_weight(prev
))
417 * Move the split one to the right, since the top element in the
418 * last-compared pair can't be in the progression. Only do this
419 * when we split in the middle of the array (otherwise if we got
420 * to the end, then the split is in the right place).
426 * Then, anything to the left of 'split' must be in a new pack. But,
427 * creating that new pack may cause packs in the heavy half to no longer
428 * form a geometric progression.
430 * Compute an expected size of the new pack, and then determine how many
431 * packs in the heavy half need to be joined into it (if any) to restore
432 * the geometric progression.
434 for (i
= 0; i
< split
; i
++) {
435 struct packed_git
*p
= geometry
->pack
[i
];
437 if (unsigned_add_overflows(total_size
, geometry_pack_weight(p
)))
438 die(_("pack %s too large to roll up"), p
->pack_name
);
439 total_size
+= geometry_pack_weight(p
);
441 for (i
= split
; i
< geometry
->pack_nr
; i
++) {
442 struct packed_git
*ours
= geometry
->pack
[i
];
444 if (unsigned_mult_overflows(factor
, total_size
))
445 die(_("pack %s too large to roll up"), ours
->pack_name
);
447 if (geometry_pack_weight(ours
) < factor
* total_size
) {
448 if (unsigned_add_overflows(total_size
,
449 geometry_pack_weight(ours
)))
450 die(_("pack %s too large to roll up"),
454 total_size
+= geometry_pack_weight(ours
);
459 geometry
->split
= split
;
462 static struct packed_git
*get_preferred_pack(struct pack_geometry
*geometry
)
468 * No geometry means either an all-into-one repack (in which
469 * case there is only one pack left and it is the largest) or an
472 * If repacking incrementally, then we could check the size of
473 * all packs to determine which should be preferred, but leave
478 if (geometry
->split
== geometry
->pack_nr
)
482 * The preferred pack is the largest pack above the split line. In
483 * other words, it is the largest pack that does not get rolled up in
484 * the geometric repack.
486 for (i
= geometry
->pack_nr
; i
> geometry
->split
; i
--)
488 * A pack that is not local would never be included in a
489 * multi-pack index. We thus skip over any non-local packs.
491 if (geometry
->pack
[i
- 1]->pack_local
)
492 return geometry
->pack
[i
- 1];
497 static void clear_pack_geometry(struct pack_geometry
*geometry
)
502 free(geometry
->pack
);
503 geometry
->pack_nr
= 0;
504 geometry
->pack_alloc
= 0;
508 struct midx_snapshot_ref_data
{
514 static int midx_snapshot_ref_one(const char *refname UNUSED
,
515 const struct object_id
*oid
,
516 int flag UNUSED
, void *_data
)
518 struct midx_snapshot_ref_data
*data
= _data
;
519 struct object_id peeled
;
521 if (!peel_iterated_oid(oid
, &peeled
))
524 if (oidset_insert(&data
->seen
, oid
))
525 return 0; /* already seen */
527 if (oid_object_info(the_repository
, oid
, NULL
) != OBJ_COMMIT
)
530 fprintf(data
->f
->fp
, "%s%s\n", data
->preferred
? "+" : "",
536 static void midx_snapshot_refs(struct tempfile
*f
)
538 struct midx_snapshot_ref_data data
;
539 const struct string_list
*preferred
= bitmap_preferred_tips(the_repository
);
543 oidset_init(&data
.seen
, 0);
545 if (!fdopen_tempfile(f
, "w"))
546 die(_("could not open tempfile %s for writing"),
547 get_tempfile_path(f
));
550 struct string_list_item
*item
;
553 for_each_string_list_item(item
, preferred
)
554 for_each_ref_in(item
->string
, midx_snapshot_ref_one
, &data
);
558 for_each_ref(midx_snapshot_ref_one
, &data
);
560 if (close_tempfile_gently(f
)) {
561 int save_errno
= errno
;
564 die_errno(_("could not close refs snapshot tempfile"));
567 oidset_clear(&data
.seen
);
570 static void midx_included_packs(struct string_list
*include
,
571 struct string_list
*existing_nonkept_packs
,
572 struct string_list
*existing_kept_packs
,
573 struct string_list
*names
,
574 struct pack_geometry
*geometry
)
576 struct string_list_item
*item
;
578 for_each_string_list_item(item
, existing_kept_packs
)
579 string_list_insert(include
, xstrfmt("%s.idx", item
->string
));
580 for_each_string_list_item(item
, names
)
581 string_list_insert(include
, xstrfmt("pack-%s.idx", item
->string
));
583 struct strbuf buf
= STRBUF_INIT
;
585 for (i
= geometry
->split
; i
< geometry
->pack_nr
; i
++) {
586 struct packed_git
*p
= geometry
->pack
[i
];
589 * The multi-pack index never refers to packfiles part
590 * of an alternate object database, so we skip these.
591 * While git-multi-pack-index(1) would silently ignore
592 * them anyway, this allows us to skip executing the
593 * command completely when we have only non-local
599 strbuf_addstr(&buf
, pack_basename(p
));
600 strbuf_strip_suffix(&buf
, ".pack");
601 strbuf_addstr(&buf
, ".idx");
603 string_list_insert(include
, strbuf_detach(&buf
, NULL
));
606 for_each_string_list_item(item
, existing_nonkept_packs
) {
607 if (!((uintptr_t)item
->util
& CRUFT_PACK
)) {
609 * no need to check DELETE_PACK, since we're not
610 * doing an ALL_INTO_ONE repack
614 string_list_insert(include
, xstrfmt("%s.idx", item
->string
));
617 for_each_string_list_item(item
, existing_nonkept_packs
) {
618 if ((uintptr_t)item
->util
& DELETE_PACK
)
620 string_list_insert(include
, xstrfmt("%s.idx", item
->string
));
625 static int write_midx_included_packs(struct string_list
*include
,
626 struct pack_geometry
*geometry
,
627 const char *refs_snapshot
,
628 int show_progress
, int write_bitmaps
)
630 struct child_process cmd
= CHILD_PROCESS_INIT
;
631 struct string_list_item
*item
;
632 struct packed_git
*preferred
= get_preferred_pack(geometry
);
642 strvec_push(&cmd
.args
, "multi-pack-index");
643 strvec_pushl(&cmd
.args
, "write", "--stdin-packs", NULL
);
646 strvec_push(&cmd
.args
, "--progress");
648 strvec_push(&cmd
.args
, "--no-progress");
651 strvec_push(&cmd
.args
, "--bitmap");
654 strvec_pushf(&cmd
.args
, "--preferred-pack=%s",
655 pack_basename(preferred
));
658 strvec_pushf(&cmd
.args
, "--refs-snapshot=%s", refs_snapshot
);
660 ret
= start_command(&cmd
);
664 in
= xfdopen(cmd
.in
, "w");
665 for_each_string_list_item(item
, include
)
666 fprintf(in
, "%s\n", item
->string
);
669 return finish_command(&cmd
);
672 static void remove_redundant_bitmaps(struct string_list
*include
,
675 struct strbuf path
= STRBUF_INIT
;
676 struct string_list_item
*item
;
679 strbuf_addstr(&path
, packdir
);
680 strbuf_addch(&path
, '/');
681 packdir_len
= path
.len
;
684 * Remove any pack bitmaps corresponding to packs which are now
685 * included in the MIDX.
687 for_each_string_list_item(item
, include
) {
688 strbuf_addstr(&path
, item
->string
);
689 strbuf_strip_suffix(&path
, ".idx");
690 strbuf_addstr(&path
, ".bitmap");
692 if (unlink(path
.buf
) && errno
!= ENOENT
)
693 warning_errno(_("could not remove stale bitmap: %s"),
696 strbuf_setlen(&path
, packdir_len
);
698 strbuf_release(&path
);
701 static int write_cruft_pack(const struct pack_objects_args
*args
,
702 const char *destination
,
703 const char *pack_prefix
,
704 const char *cruft_expiration
,
705 struct string_list
*names
,
706 struct string_list
*existing_packs
,
707 struct string_list
*existing_kept_packs
)
709 struct child_process cmd
= CHILD_PROCESS_INIT
;
710 struct strbuf line
= STRBUF_INIT
;
711 struct string_list_item
*item
;
715 int local
= skip_prefix(destination
, packdir
, &scratch
);
717 prepare_pack_objects(&cmd
, args
, destination
);
719 strvec_push(&cmd
.args
, "--cruft");
720 if (cruft_expiration
)
721 strvec_pushf(&cmd
.args
, "--cruft-expiration=%s",
724 strvec_push(&cmd
.args
, "--honor-pack-keep");
725 strvec_push(&cmd
.args
, "--non-empty");
726 strvec_push(&cmd
.args
, "--max-pack-size=0");
730 ret
= start_command(&cmd
);
735 * names has a confusing double use: it both provides the list
736 * of just-written new packs, and accepts the name of the cruft
737 * pack we are writing.
739 * By the time it is read here, it contains only the pack(s)
740 * that were just written, which is exactly the set of packs we
741 * want to consider kept.
743 * If `--expire-to` is given, the double-use served by `names`
744 * ensures that the pack written to `--expire-to` excludes any
745 * objects contained in the cruft pack.
747 in
= xfdopen(cmd
.in
, "w");
748 for_each_string_list_item(item
, names
)
749 fprintf(in
, "%s-%s.pack\n", pack_prefix
, item
->string
);
750 for_each_string_list_item(item
, existing_packs
)
751 fprintf(in
, "-%s.pack\n", item
->string
);
752 for_each_string_list_item(item
, existing_kept_packs
)
753 fprintf(in
, "%s.pack\n", item
->string
);
756 out
= xfdopen(cmd
.out
, "r");
757 while (strbuf_getline_lf(&line
, out
) != EOF
) {
758 struct string_list_item
*item
;
760 if (line
.len
!= the_hash_algo
->hexsz
)
761 die(_("repack: Expecting full hex object ID lines only "
762 "from pack-objects."));
764 * avoid putting packs written outside of the repository in the
768 item
= string_list_append(names
, line
.buf
);
769 item
->util
= populate_pack_exts(line
.buf
);
774 strbuf_release(&line
);
776 return finish_command(&cmd
);
779 int cmd_repack(int argc
, const char **argv
, const char *prefix
)
781 struct child_process cmd
= CHILD_PROCESS_INIT
;
782 struct string_list_item
*item
;
783 struct string_list names
= STRING_LIST_INIT_DUP
;
784 struct string_list existing_nonkept_packs
= STRING_LIST_INIT_DUP
;
785 struct string_list existing_kept_packs
= STRING_LIST_INIT_DUP
;
786 struct pack_geometry
*geometry
= NULL
;
787 struct strbuf line
= STRBUF_INIT
;
788 struct tempfile
*refs_snapshot
= NULL
;
793 /* variables to be filled by option parsing */
794 int delete_redundant
= 0;
795 const char *unpack_unreachable
= NULL
;
796 int keep_unreachable
= 0;
797 struct string_list keep_pack_list
= STRING_LIST_INIT_NODUP
;
798 struct pack_objects_args po_args
= {NULL
};
799 struct pack_objects_args cruft_po_args
= {NULL
};
800 int geometric_factor
= 0;
802 const char *cruft_expiration
= NULL
;
803 const char *expire_to
= NULL
;
805 struct option builtin_repack_options
[] = {
806 OPT_BIT('a', NULL
, &pack_everything
,
807 N_("pack everything in a single pack"), ALL_INTO_ONE
),
808 OPT_BIT('A', NULL
, &pack_everything
,
809 N_("same as -a, and turn unreachable objects loose"),
810 LOOSEN_UNREACHABLE
| ALL_INTO_ONE
),
811 OPT_BIT(0, "cruft", &pack_everything
,
812 N_("same as -a, pack unreachable cruft objects separately"),
814 OPT_STRING(0, "cruft-expiration", &cruft_expiration
, N_("approxidate"),
815 N_("with --cruft, expire objects older than this")),
816 OPT_BOOL('d', NULL
, &delete_redundant
,
817 N_("remove redundant packs, and run git-prune-packed")),
818 OPT_BOOL('f', NULL
, &po_args
.no_reuse_delta
,
819 N_("pass --no-reuse-delta to git-pack-objects")),
820 OPT_BOOL('F', NULL
, &po_args
.no_reuse_object
,
821 N_("pass --no-reuse-object to git-pack-objects")),
822 OPT_NEGBIT('n', NULL
, &run_update_server_info
,
823 N_("do not run git-update-server-info"), 1),
824 OPT__QUIET(&po_args
.quiet
, N_("be quiet")),
825 OPT_BOOL('l', "local", &po_args
.local
,
826 N_("pass --local to git-pack-objects")),
827 OPT_BOOL('b', "write-bitmap-index", &write_bitmaps
,
828 N_("write bitmap index")),
829 OPT_BOOL('i', "delta-islands", &use_delta_islands
,
830 N_("pass --delta-islands to git-pack-objects")),
831 OPT_STRING(0, "unpack-unreachable", &unpack_unreachable
, N_("approxidate"),
832 N_("with -A, do not loosen objects older than this")),
833 OPT_BOOL('k', "keep-unreachable", &keep_unreachable
,
834 N_("with -a, repack unreachable objects")),
835 OPT_STRING(0, "window", &po_args
.window
, N_("n"),
836 N_("size of the window used for delta compression")),
837 OPT_STRING(0, "window-memory", &po_args
.window_memory
, N_("bytes"),
838 N_("same as the above, but limit memory size instead of entries count")),
839 OPT_STRING(0, "depth", &po_args
.depth
, N_("n"),
840 N_("limits the maximum delta depth")),
841 OPT_STRING(0, "threads", &po_args
.threads
, N_("n"),
842 N_("limits the maximum number of threads")),
843 OPT_STRING(0, "max-pack-size", &po_args
.max_pack_size
, N_("bytes"),
844 N_("maximum size of each packfile")),
845 OPT_BOOL(0, "pack-kept-objects", &pack_kept_objects
,
846 N_("repack objects in packs marked with .keep")),
847 OPT_STRING_LIST(0, "keep-pack", &keep_pack_list
, N_("name"),
848 N_("do not repack this pack")),
849 OPT_INTEGER('g', "geometric", &geometric_factor
,
850 N_("find a geometric progression with factor <N>")),
851 OPT_BOOL('m', "write-midx", &write_midx
,
852 N_("write a multi-pack index of the resulting packs")),
853 OPT_STRING(0, "expire-to", &expire_to
, N_("dir"),
854 N_("pack prefix to store a pack containing pruned objects")),
858 git_config(repack_config
, &cruft_po_args
);
860 argc
= parse_options(argc
, argv
, prefix
, builtin_repack_options
,
861 git_repack_usage
, 0);
863 if (delete_redundant
&& repository_format_precious_objects
)
864 die(_("cannot delete packs in a precious-objects repo"));
866 if (keep_unreachable
&&
867 (unpack_unreachable
|| (pack_everything
& LOOSEN_UNREACHABLE
)))
868 die(_("options '%s' and '%s' cannot be used together"), "--keep-unreachable", "-A");
870 if (pack_everything
& PACK_CRUFT
) {
871 pack_everything
|= ALL_INTO_ONE
;
873 if (unpack_unreachable
|| (pack_everything
& LOOSEN_UNREACHABLE
))
874 die(_("options '%s' and '%s' cannot be used together"), "--cruft", "-A");
875 if (keep_unreachable
)
876 die(_("options '%s' and '%s' cannot be used together"), "--cruft", "-k");
879 if (write_bitmaps
< 0) {
881 (!(pack_everything
& ALL_INTO_ONE
) || !is_bare_repository()))
883 } else if (write_bitmaps
&&
884 git_env_bool(GIT_TEST_MULTI_PACK_INDEX
, 0) &&
885 git_env_bool(GIT_TEST_MULTI_PACK_INDEX_WRITE_BITMAP
, 0)) {
888 if (pack_kept_objects
< 0)
889 pack_kept_objects
= write_bitmaps
> 0 && !write_midx
;
891 if (write_bitmaps
&& !(pack_everything
& ALL_INTO_ONE
) && !write_midx
)
892 die(_(incremental_bitmap_conflict_error
));
894 if (write_bitmaps
&& po_args
.local
&& has_alt_odb(the_repository
)) {
896 * When asked to do a local repack, but we have
897 * packfiles that are inherited from an alternate, then
898 * we cannot guarantee that the multi-pack-index would
899 * have full coverage of all objects. We thus disable
900 * writing bitmaps in that case.
902 warning(_("disabling bitmap writing, as some objects are not being packed"));
906 if (write_midx
&& write_bitmaps
) {
907 struct strbuf path
= STRBUF_INIT
;
909 strbuf_addf(&path
, "%s/%s_XXXXXX", get_object_directory(),
912 refs_snapshot
= xmks_tempfile(path
.buf
);
913 midx_snapshot_refs(refs_snapshot
);
915 strbuf_release(&path
);
918 packdir
= mkpathdup("%s/pack", get_object_directory());
919 packtmp_name
= xstrfmt(".tmp-%d-pack", (int)getpid());
920 packtmp
= mkpathdup("%s/%s", packdir
, packtmp_name
);
922 collect_pack_filenames(&existing_nonkept_packs
, &existing_kept_packs
,
925 if (geometric_factor
) {
927 die(_("options '%s' and '%s' cannot be used together"), "--geometric", "-A/-a");
928 init_pack_geometry(&geometry
, &existing_kept_packs
, &po_args
);
929 split_pack_geometry(geometry
, geometric_factor
);
932 prepare_pack_objects(&cmd
, &po_args
, packtmp
);
934 show_progress
= !po_args
.quiet
&& isatty(2);
936 strvec_push(&cmd
.args
, "--keep-true-parents");
937 if (!pack_kept_objects
)
938 strvec_push(&cmd
.args
, "--honor-pack-keep");
939 for (i
= 0; i
< keep_pack_list
.nr
; i
++)
940 strvec_pushf(&cmd
.args
, "--keep-pack=%s",
941 keep_pack_list
.items
[i
].string
);
942 strvec_push(&cmd
.args
, "--non-empty");
945 * We need to grab all reachable objects, including those that
946 * are reachable from reflogs and the index.
948 * When repacking into a geometric progression of packs,
949 * however, we ask 'git pack-objects --stdin-packs', and it is
950 * not about packing objects based on reachability but about
951 * repacking all the objects in specified packs and loose ones
952 * (indeed, --stdin-packs is incompatible with these options).
954 strvec_push(&cmd
.args
, "--all");
955 strvec_push(&cmd
.args
, "--reflog");
956 strvec_push(&cmd
.args
, "--indexed-objects");
958 if (repo_has_promisor_remote(the_repository
))
959 strvec_push(&cmd
.args
, "--exclude-promisor-objects");
961 if (write_bitmaps
> 0)
962 strvec_push(&cmd
.args
, "--write-bitmap-index");
963 else if (write_bitmaps
< 0)
964 strvec_push(&cmd
.args
, "--write-bitmap-index-quiet");
966 if (use_delta_islands
)
967 strvec_push(&cmd
.args
, "--delta-islands");
969 if (pack_everything
& ALL_INTO_ONE
) {
970 repack_promisor_objects(&po_args
, &names
);
972 if (existing_nonkept_packs
.nr
&& delete_redundant
&&
973 !(pack_everything
& PACK_CRUFT
)) {
974 for_each_string_list_item(item
, &names
) {
975 strvec_pushf(&cmd
.args
, "--keep-pack=%s-%s.pack",
976 packtmp_name
, item
->string
);
978 if (unpack_unreachable
) {
979 strvec_pushf(&cmd
.args
,
980 "--unpack-unreachable=%s",
982 } else if (pack_everything
& LOOSEN_UNREACHABLE
) {
983 strvec_push(&cmd
.args
,
984 "--unpack-unreachable");
985 } else if (keep_unreachable
) {
986 strvec_push(&cmd
.args
, "--keep-unreachable");
987 strvec_push(&cmd
.args
, "--pack-loose-unreachable");
990 } else if (geometry
) {
991 strvec_push(&cmd
.args
, "--stdin-packs");
992 strvec_push(&cmd
.args
, "--unpacked");
994 strvec_push(&cmd
.args
, "--unpacked");
995 strvec_push(&cmd
.args
, "--incremental");
1003 ret
= start_command(&cmd
);
1008 FILE *in
= xfdopen(cmd
.in
, "w");
1010 * The resulting pack should contain all objects in packs that
1011 * are going to be rolled up, but exclude objects in packs which
1012 * are being left alone.
1014 for (i
= 0; i
< geometry
->split
; i
++)
1015 fprintf(in
, "%s\n", pack_basename(geometry
->pack
[i
]));
1016 for (i
= geometry
->split
; i
< geometry
->pack_nr
; i
++)
1017 fprintf(in
, "^%s\n", pack_basename(geometry
->pack
[i
]));
1021 out
= xfdopen(cmd
.out
, "r");
1022 while (strbuf_getline_lf(&line
, out
) != EOF
) {
1023 struct string_list_item
*item
;
1025 if (line
.len
!= the_hash_algo
->hexsz
)
1026 die(_("repack: Expecting full hex object ID lines only from pack-objects."));
1027 item
= string_list_append(&names
, line
.buf
);
1028 item
->util
= populate_pack_exts(item
->string
);
1030 strbuf_release(&line
);
1032 ret
= finish_command(&cmd
);
1036 if (!names
.nr
&& !po_args
.quiet
)
1037 printf_ln(_("Nothing new to pack."));
1039 if (pack_everything
& PACK_CRUFT
) {
1040 const char *pack_prefix
;
1041 if (!skip_prefix(packtmp
, packdir
, &pack_prefix
))
1042 die(_("pack prefix %s does not begin with objdir %s"),
1044 if (*pack_prefix
== '/')
1047 if (!cruft_po_args
.window
)
1048 cruft_po_args
.window
= po_args
.window
;
1049 if (!cruft_po_args
.window_memory
)
1050 cruft_po_args
.window_memory
= po_args
.window_memory
;
1051 if (!cruft_po_args
.depth
)
1052 cruft_po_args
.depth
= po_args
.depth
;
1053 if (!cruft_po_args
.threads
)
1054 cruft_po_args
.threads
= po_args
.threads
;
1056 cruft_po_args
.local
= po_args
.local
;
1057 cruft_po_args
.quiet
= po_args
.quiet
;
1059 ret
= write_cruft_pack(&cruft_po_args
, packtmp
, pack_prefix
,
1060 cruft_expiration
, &names
,
1061 &existing_nonkept_packs
,
1062 &existing_kept_packs
);
1066 if (delete_redundant
&& expire_to
) {
1068 * If `--expire-to` is given with `-d`, it's possible
1069 * that we're about to prune some objects. With cruft
1070 * packs, pruning is implicit: any objects from existing
1071 * packs that weren't picked up by new packs are removed
1072 * when their packs are deleted.
1074 * Generate an additional cruft pack, with one twist:
1075 * `names` now includes the name of the cruft pack
1076 * written in the previous step. So the contents of
1077 * _this_ cruft pack exclude everything contained in the
1078 * existing cruft pack (that is, all of the unreachable
1079 * objects which are no older than
1080 * `--cruft-expiration`).
1082 * To make this work, cruft_expiration must become NULL
1083 * so that this cruft pack doesn't actually prune any
1084 * objects. If it were non-NULL, this call would always
1085 * generate an empty pack (since every object not in the
1086 * cruft pack generated above will have an mtime older
1087 * than the expiration).
1089 ret
= write_cruft_pack(&cruft_po_args
, expire_to
,
1093 &existing_nonkept_packs
,
1094 &existing_kept_packs
);
1100 string_list_sort(&names
);
1102 close_object_store(the_repository
->objects
);
1105 * Ok we have prepared all new packfiles.
1107 for_each_string_list_item(item
, &names
) {
1108 struct generated_pack_data
*data
= item
->util
;
1110 for (ext
= 0; ext
< ARRAY_SIZE(exts
); ext
++) {
1113 fname
= mkpathdup("%s/pack-%s%s",
1114 packdir
, item
->string
, exts
[ext
].name
);
1116 if (data
->tempfiles
[ext
]) {
1117 const char *fname_old
= get_tempfile_path(data
->tempfiles
[ext
]);
1118 struct stat statbuffer
;
1120 if (!stat(fname_old
, &statbuffer
)) {
1121 statbuffer
.st_mode
&= ~(S_IWUSR
| S_IWGRP
| S_IWOTH
);
1122 chmod(fname_old
, statbuffer
.st_mode
);
1125 if (rename_tempfile(&data
->tempfiles
[ext
], fname
))
1126 die_errno(_("renaming pack to '%s' failed"), fname
);
1127 } else if (!exts
[ext
].optional
)
1128 die(_("pack-objects did not write a '%s' file for pack %s-%s"),
1129 exts
[ext
].name
, packtmp
, item
->string
);
1130 else if (unlink(fname
) < 0 && errno
!= ENOENT
)
1131 die_errno(_("could not unlink: %s"), fname
);
1136 /* End of pack replacement. */
1138 if (delete_redundant
&& pack_everything
& ALL_INTO_ONE
) {
1139 const int hexsz
= the_hash_algo
->hexsz
;
1140 for_each_string_list_item(item
, &existing_nonkept_packs
) {
1142 size_t len
= strlen(item
->string
);
1145 sha1
= item
->string
+ len
- hexsz
;
1147 * Mark this pack for deletion, which ensures that this
1148 * pack won't be included in a MIDX (if `--write-midx`
1149 * was given) and that we will actually delete this pack
1150 * (if `-d` was given).
1152 if (!string_list_has_string(&names
, sha1
))
1153 item
->util
= (void*)(uintptr_t)((size_t)item
->util
| DELETE_PACK
);
1158 struct string_list include
= STRING_LIST_INIT_NODUP
;
1159 midx_included_packs(&include
, &existing_nonkept_packs
,
1160 &existing_kept_packs
, &names
, geometry
);
1162 ret
= write_midx_included_packs(&include
, geometry
,
1163 refs_snapshot
? get_tempfile_path(refs_snapshot
) : NULL
,
1164 show_progress
, write_bitmaps
> 0);
1166 if (!ret
&& write_bitmaps
)
1167 remove_redundant_bitmaps(&include
, packdir
);
1169 string_list_clear(&include
, 0);
1175 reprepare_packed_git(the_repository
);
1177 if (delete_redundant
) {
1179 for_each_string_list_item(item
, &existing_nonkept_packs
) {
1180 if (!((uintptr_t)item
->util
& DELETE_PACK
))
1182 remove_redundant_pack(packdir
, item
->string
);
1186 struct strbuf buf
= STRBUF_INIT
;
1189 for (i
= 0; i
< geometry
->split
; i
++) {
1190 struct packed_git
*p
= geometry
->pack
[i
];
1191 if (string_list_has_string(&names
,
1192 hash_to_hex(p
->hash
)))
1196 strbuf_addstr(&buf
, pack_basename(p
));
1197 strbuf_strip_suffix(&buf
, ".pack");
1199 if ((p
->pack_keep
) ||
1200 (string_list_has_string(&existing_kept_packs
,
1204 remove_redundant_pack(packdir
, buf
.buf
);
1206 strbuf_release(&buf
);
1209 opts
|= PRUNE_PACKED_VERBOSE
;
1210 prune_packed_objects(opts
);
1212 if (!keep_unreachable
&&
1213 (!(pack_everything
& LOOSEN_UNREACHABLE
) ||
1214 unpack_unreachable
) &&
1215 is_repository_shallow(the_repository
))
1216 prune_shallow(PRUNE_QUICK
);
1219 if (run_update_server_info
)
1220 update_server_info(0);
1222 if (git_env_bool(GIT_TEST_MULTI_PACK_INDEX
, 0)) {
1224 if (git_env_bool(GIT_TEST_MULTI_PACK_INDEX_WRITE_BITMAP
, 0))
1225 flags
|= MIDX_WRITE_BITMAP
| MIDX_WRITE_REV_INDEX
;
1226 write_midx_file(get_object_directory(), NULL
, NULL
, flags
);
1230 string_list_clear(&names
, 1);
1231 string_list_clear(&existing_nonkept_packs
, 0);
1232 string_list_clear(&existing_kept_packs
, 0);
1233 clear_pack_geometry(geometry
);