4 #include "environment.h"
7 #include "parse-options.h"
9 #include "run-command.h"
10 #include "server-info.h"
13 #include "string-list.h"
17 #include "prune-packed.h"
18 #include "object-store-ll.h"
19 #include "promisor-remote.h"
22 #include "pack-bitmap.h"
25 #define ALL_INTO_ONE 1
26 #define LOOSEN_UNREACHABLE 2
32 static int pack_everything
;
33 static int delta_base_offset
= 1;
34 static int pack_kept_objects
= -1;
35 static int write_bitmaps
= -1;
36 static int use_delta_islands
;
37 static int run_update_server_info
= 1;
38 static char *packdir
, *packtmp_name
, *packtmp
;
40 static const char *const git_repack_usage
[] = {
41 N_("git repack [<options>]"),
45 static const char incremental_bitmap_conflict_error
[] = N_(
46 "Incremental repacks are incompatible with bitmap indexes. Use\n"
47 "--no-write-bitmap-index or disable the pack.writeBitmaps configuration."
50 struct pack_objects_args
{
52 const char *window_memory
;
55 const char *max_pack_size
;
62 static int repack_config(const char *var
, const char *value
,
63 const struct config_context
*ctx
, 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
, ctx
, cb
);
99 * Adds all packs hex strings (pack-$HASH) to either fname_nonkept_list
100 * or 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
)
108 struct packed_git
*p
;
109 struct strbuf buf
= STRBUF_INIT
;
111 for (p
= get_all_packs(the_repository
); p
; p
= p
->next
) {
118 base
= pack_basename(p
);
120 for (i
= 0; i
< extra_keep
->nr
; i
++)
121 if (!fspathcmp(base
, extra_keep
->items
[i
].string
))
125 strbuf_addstr(&buf
, base
);
126 strbuf_strip_suffix(&buf
, ".pack");
128 if ((extra_keep
->nr
> 0 && i
< extra_keep
->nr
) || p
->pack_keep
)
129 string_list_append(fname_kept_list
, buf
.buf
);
131 struct string_list_item
*item
;
132 item
= string_list_append(fname_nonkept_list
, buf
.buf
);
134 item
->util
= (void*)(uintptr_t)CRUFT_PACK
;
138 string_list_sort(fname_kept_list
);
139 strbuf_release(&buf
);
142 static void remove_redundant_pack(const char *dir_name
, const char *base_name
)
144 struct strbuf buf
= STRBUF_INIT
;
145 struct multi_pack_index
*m
= get_local_multi_pack_index(the_repository
);
146 strbuf_addf(&buf
, "%s.pack", base_name
);
147 if (m
&& midx_contains_pack(m
, buf
.buf
))
148 clear_midx_file(the_repository
);
149 strbuf_insertf(&buf
, 0, "%s/", dir_name
);
150 unlink_pack_path(buf
.buf
, 1);
151 strbuf_release(&buf
);
154 static void prepare_pack_objects(struct child_process
*cmd
,
155 const struct pack_objects_args
*args
,
158 strvec_push(&cmd
->args
, "pack-objects");
160 strvec_pushf(&cmd
->args
, "--window=%s", args
->window
);
161 if (args
->window_memory
)
162 strvec_pushf(&cmd
->args
, "--window-memory=%s", args
->window_memory
);
164 strvec_pushf(&cmd
->args
, "--depth=%s", args
->depth
);
166 strvec_pushf(&cmd
->args
, "--threads=%s", args
->threads
);
167 if (args
->max_pack_size
)
168 strvec_pushf(&cmd
->args
, "--max-pack-size=%s", args
->max_pack_size
);
169 if (args
->no_reuse_delta
)
170 strvec_pushf(&cmd
->args
, "--no-reuse-delta");
171 if (args
->no_reuse_object
)
172 strvec_pushf(&cmd
->args
, "--no-reuse-object");
174 strvec_push(&cmd
->args
, "--local");
176 strvec_push(&cmd
->args
, "--quiet");
177 if (delta_base_offset
)
178 strvec_push(&cmd
->args
, "--delta-base-offset");
179 strvec_push(&cmd
->args
, out
);
185 * Write oid to the given struct child_process's stdin, starting it first if
188 static int write_oid(const struct object_id
*oid
,
189 struct packed_git
*pack UNUSED
,
190 uint32_t pos UNUSED
, void *data
)
192 struct child_process
*cmd
= data
;
195 if (start_command(cmd
))
196 die(_("could not start pack-objects to repack promisor objects"));
199 xwrite(cmd
->in
, oid_to_hex(oid
), the_hash_algo
->hexsz
);
200 xwrite(cmd
->in
, "\n", 1);
216 struct generated_pack_data
{
217 struct tempfile
*tempfiles
[ARRAY_SIZE(exts
)];
220 static struct generated_pack_data
*populate_pack_exts(const char *name
)
223 struct strbuf path
= STRBUF_INIT
;
224 struct generated_pack_data
*data
= xcalloc(1, sizeof(*data
));
227 for (i
= 0; i
< ARRAY_SIZE(exts
); i
++) {
229 strbuf_addf(&path
, "%s-%s%s", packtmp
, name
, exts
[i
].name
);
231 if (stat(path
.buf
, &statbuf
))
234 data
->tempfiles
[i
] = register_tempfile(path
.buf
);
237 strbuf_release(&path
);
241 static void repack_promisor_objects(const struct pack_objects_args
*args
,
242 struct string_list
*names
)
244 struct child_process cmd
= CHILD_PROCESS_INIT
;
246 struct strbuf line
= STRBUF_INIT
;
248 prepare_pack_objects(&cmd
, args
, packtmp
);
252 * NEEDSWORK: Giving pack-objects only the OIDs without any ordering
253 * hints may result in suboptimal deltas in the resulting pack. See if
254 * the OIDs can be sent with fake paths such that pack-objects can use a
255 * {type -> existing pack order} ordering when computing deltas instead
256 * of a {type -> size} ordering, which may produce better deltas.
258 for_each_packed_object(write_oid
, &cmd
,
259 FOR_EACH_OBJECT_PROMISOR_ONLY
);
262 /* No packed objects; cmd was never started */
263 child_process_clear(&cmd
);
269 out
= xfdopen(cmd
.out
, "r");
270 while (strbuf_getline_lf(&line
, out
) != EOF
) {
271 struct string_list_item
*item
;
274 if (line
.len
!= the_hash_algo
->hexsz
)
275 die(_("repack: Expecting full hex object ID lines only from pack-objects."));
276 item
= string_list_append(names
, line
.buf
);
279 * pack-objects creates the .pack and .idx files, but not the
280 * .promisor file. Create the .promisor file, which is empty.
282 * NEEDSWORK: fetch-pack sometimes generates non-empty
283 * .promisor files containing the ref names and associated
284 * hashes at the point of generation of the corresponding
285 * packfile, but this would not preserve their contents. Maybe
286 * concatenate the contents of all .promisor files instead of
287 * just creating a new empty file.
289 promisor_name
= mkpathdup("%s-%s.promisor", packtmp
,
291 write_promisor_file(promisor_name
, NULL
, 0);
293 item
->util
= populate_pack_exts(item
->string
);
298 if (finish_command(&cmd
))
299 die(_("could not finish pack-objects to repack promisor objects"));
302 struct pack_geometry
{
303 struct packed_git
**pack
;
304 uint32_t pack_nr
, pack_alloc
;
308 static uint32_t geometry_pack_weight(struct packed_git
*p
)
310 if (open_pack_index(p
))
311 die(_("cannot open index for %s"), p
->pack_name
);
312 return p
->num_objects
;
315 static int geometry_cmp(const void *va
, const void *vb
)
317 uint32_t aw
= geometry_pack_weight(*(struct packed_git
**)va
),
318 bw
= geometry_pack_weight(*(struct packed_git
**)vb
);
327 static void init_pack_geometry(struct pack_geometry
**geometry_p
,
328 struct string_list
*existing_kept_packs
,
329 const struct pack_objects_args
*args
)
331 struct packed_git
*p
;
332 struct pack_geometry
*geometry
;
333 struct strbuf buf
= STRBUF_INIT
;
335 *geometry_p
= xcalloc(1, sizeof(struct pack_geometry
));
336 geometry
= *geometry_p
;
338 for (p
= get_all_packs(the_repository
); p
; p
= p
->next
) {
339 if (args
->local
&& !p
->pack_local
)
341 * When asked to only repack local packfiles we skip
342 * over any packfiles that are borrowed from alternate
343 * object directories.
347 if (!pack_kept_objects
) {
349 * Any pack that has its pack_keep bit set will appear
350 * in existing_kept_packs below, but this saves us from
351 * doing a more expensive check.
357 * The pack may be kept via the --keep-pack option;
358 * check 'existing_kept_packs' to determine whether to
362 strbuf_addstr(&buf
, pack_basename(p
));
363 strbuf_strip_suffix(&buf
, ".pack");
365 if (string_list_has_string(existing_kept_packs
, buf
.buf
))
371 ALLOC_GROW(geometry
->pack
,
372 geometry
->pack_nr
+ 1,
373 geometry
->pack_alloc
);
375 geometry
->pack
[geometry
->pack_nr
] = p
;
379 QSORT(geometry
->pack
, geometry
->pack_nr
, geometry_cmp
);
380 strbuf_release(&buf
);
383 static void split_pack_geometry(struct pack_geometry
*geometry
, int factor
)
387 off_t total_size
= 0;
389 if (!geometry
->pack_nr
) {
390 geometry
->split
= geometry
->pack_nr
;
395 * First, count the number of packs (in descending order of size) which
396 * already form a geometric progression.
398 for (i
= geometry
->pack_nr
- 1; i
> 0; i
--) {
399 struct packed_git
*ours
= geometry
->pack
[i
];
400 struct packed_git
*prev
= geometry
->pack
[i
- 1];
402 if (unsigned_mult_overflows(factor
, geometry_pack_weight(prev
)))
403 die(_("pack %s too large to consider in geometric "
407 if (geometry_pack_weight(ours
) < factor
* geometry_pack_weight(prev
))
415 * Move the split one to the right, since the top element in the
416 * last-compared pair can't be in the progression. Only do this
417 * when we split in the middle of the array (otherwise if we got
418 * to the end, then the split is in the right place).
424 * Then, anything to the left of 'split' must be in a new pack. But,
425 * creating that new pack may cause packs in the heavy half to no longer
426 * form a geometric progression.
428 * Compute an expected size of the new pack, and then determine how many
429 * packs in the heavy half need to be joined into it (if any) to restore
430 * the geometric progression.
432 for (i
= 0; i
< split
; i
++) {
433 struct packed_git
*p
= geometry
->pack
[i
];
435 if (unsigned_add_overflows(total_size
, geometry_pack_weight(p
)))
436 die(_("pack %s too large to roll up"), p
->pack_name
);
437 total_size
+= geometry_pack_weight(p
);
439 for (i
= split
; i
< geometry
->pack_nr
; i
++) {
440 struct packed_git
*ours
= geometry
->pack
[i
];
442 if (unsigned_mult_overflows(factor
, total_size
))
443 die(_("pack %s too large to roll up"), ours
->pack_name
);
445 if (geometry_pack_weight(ours
) < factor
* total_size
) {
446 if (unsigned_add_overflows(total_size
,
447 geometry_pack_weight(ours
)))
448 die(_("pack %s too large to roll up"),
452 total_size
+= geometry_pack_weight(ours
);
457 geometry
->split
= split
;
460 static struct packed_git
*get_preferred_pack(struct pack_geometry
*geometry
)
466 * No geometry means either an all-into-one repack (in which
467 * case there is only one pack left and it is the largest) or an
470 * If repacking incrementally, then we could check the size of
471 * all packs to determine which should be preferred, but leave
476 if (geometry
->split
== geometry
->pack_nr
)
480 * The preferred pack is the largest pack above the split line. In
481 * other words, it is the largest pack that does not get rolled up in
482 * the geometric repack.
484 for (i
= geometry
->pack_nr
; i
> geometry
->split
; i
--)
486 * A pack that is not local would never be included in a
487 * multi-pack index. We thus skip over any non-local packs.
489 if (geometry
->pack
[i
- 1]->pack_local
)
490 return geometry
->pack
[i
- 1];
495 static void clear_pack_geometry(struct pack_geometry
*geometry
)
500 free(geometry
->pack
);
501 geometry
->pack_nr
= 0;
502 geometry
->pack_alloc
= 0;
506 struct midx_snapshot_ref_data
{
512 static int midx_snapshot_ref_one(const char *refname UNUSED
,
513 const struct object_id
*oid
,
514 int flag UNUSED
, void *_data
)
516 struct midx_snapshot_ref_data
*data
= _data
;
517 struct object_id peeled
;
519 if (!peel_iterated_oid(oid
, &peeled
))
522 if (oidset_insert(&data
->seen
, oid
))
523 return 0; /* already seen */
525 if (oid_object_info(the_repository
, oid
, NULL
) != OBJ_COMMIT
)
528 fprintf(data
->f
->fp
, "%s%s\n", data
->preferred
? "+" : "",
534 static void midx_snapshot_refs(struct tempfile
*f
)
536 struct midx_snapshot_ref_data data
;
537 const struct string_list
*preferred
= bitmap_preferred_tips(the_repository
);
541 oidset_init(&data
.seen
, 0);
543 if (!fdopen_tempfile(f
, "w"))
544 die(_("could not open tempfile %s for writing"),
545 get_tempfile_path(f
));
548 struct string_list_item
*item
;
551 for_each_string_list_item(item
, preferred
)
552 for_each_ref_in(item
->string
, midx_snapshot_ref_one
, &data
);
556 for_each_ref(midx_snapshot_ref_one
, &data
);
558 if (close_tempfile_gently(f
)) {
559 int save_errno
= errno
;
562 die_errno(_("could not close refs snapshot tempfile"));
565 oidset_clear(&data
.seen
);
568 static void midx_included_packs(struct string_list
*include
,
569 struct string_list
*existing_nonkept_packs
,
570 struct string_list
*existing_kept_packs
,
571 struct string_list
*names
,
572 struct pack_geometry
*geometry
)
574 struct string_list_item
*item
;
576 for_each_string_list_item(item
, existing_kept_packs
)
577 string_list_insert(include
, xstrfmt("%s.idx", item
->string
));
578 for_each_string_list_item(item
, names
)
579 string_list_insert(include
, xstrfmt("pack-%s.idx", item
->string
));
581 struct strbuf buf
= STRBUF_INIT
;
583 for (i
= geometry
->split
; i
< geometry
->pack_nr
; i
++) {
584 struct packed_git
*p
= geometry
->pack
[i
];
587 * The multi-pack index never refers to packfiles part
588 * of an alternate object database, so we skip these.
589 * While git-multi-pack-index(1) would silently ignore
590 * them anyway, this allows us to skip executing the
591 * command completely when we have only non-local
597 strbuf_addstr(&buf
, pack_basename(p
));
598 strbuf_strip_suffix(&buf
, ".pack");
599 strbuf_addstr(&buf
, ".idx");
601 string_list_insert(include
, strbuf_detach(&buf
, NULL
));
604 for_each_string_list_item(item
, existing_nonkept_packs
) {
605 if (!((uintptr_t)item
->util
& CRUFT_PACK
)) {
607 * no need to check DELETE_PACK, since we're not
608 * doing an ALL_INTO_ONE repack
612 string_list_insert(include
, xstrfmt("%s.idx", item
->string
));
615 for_each_string_list_item(item
, existing_nonkept_packs
) {
616 if ((uintptr_t)item
->util
& DELETE_PACK
)
618 string_list_insert(include
, xstrfmt("%s.idx", item
->string
));
623 static int write_midx_included_packs(struct string_list
*include
,
624 struct pack_geometry
*geometry
,
625 const char *refs_snapshot
,
626 int show_progress
, int write_bitmaps
)
628 struct child_process cmd
= CHILD_PROCESS_INIT
;
629 struct string_list_item
*item
;
630 struct packed_git
*preferred
= get_preferred_pack(geometry
);
640 strvec_push(&cmd
.args
, "multi-pack-index");
641 strvec_pushl(&cmd
.args
, "write", "--stdin-packs", NULL
);
644 strvec_push(&cmd
.args
, "--progress");
646 strvec_push(&cmd
.args
, "--no-progress");
649 strvec_push(&cmd
.args
, "--bitmap");
652 strvec_pushf(&cmd
.args
, "--preferred-pack=%s",
653 pack_basename(preferred
));
656 strvec_pushf(&cmd
.args
, "--refs-snapshot=%s", refs_snapshot
);
658 ret
= start_command(&cmd
);
662 in
= xfdopen(cmd
.in
, "w");
663 for_each_string_list_item(item
, include
)
664 fprintf(in
, "%s\n", item
->string
);
667 return finish_command(&cmd
);
670 static void remove_redundant_bitmaps(struct string_list
*include
,
673 struct strbuf path
= STRBUF_INIT
;
674 struct string_list_item
*item
;
677 strbuf_addstr(&path
, packdir
);
678 strbuf_addch(&path
, '/');
679 packdir_len
= path
.len
;
682 * Remove any pack bitmaps corresponding to packs which are now
683 * included in the MIDX.
685 for_each_string_list_item(item
, include
) {
686 strbuf_addstr(&path
, item
->string
);
687 strbuf_strip_suffix(&path
, ".idx");
688 strbuf_addstr(&path
, ".bitmap");
690 if (unlink(path
.buf
) && errno
!= ENOENT
)
691 warning_errno(_("could not remove stale bitmap: %s"),
694 strbuf_setlen(&path
, packdir_len
);
696 strbuf_release(&path
);
699 static int write_cruft_pack(const struct pack_objects_args
*args
,
700 const char *destination
,
701 const char *pack_prefix
,
702 const char *cruft_expiration
,
703 struct string_list
*names
,
704 struct string_list
*existing_packs
,
705 struct string_list
*existing_kept_packs
)
707 struct child_process cmd
= CHILD_PROCESS_INIT
;
708 struct strbuf line
= STRBUF_INIT
;
709 struct string_list_item
*item
;
713 int local
= skip_prefix(destination
, packdir
, &scratch
);
715 prepare_pack_objects(&cmd
, args
, destination
);
717 strvec_push(&cmd
.args
, "--cruft");
718 if (cruft_expiration
)
719 strvec_pushf(&cmd
.args
, "--cruft-expiration=%s",
722 strvec_push(&cmd
.args
, "--honor-pack-keep");
723 strvec_push(&cmd
.args
, "--non-empty");
724 strvec_push(&cmd
.args
, "--max-pack-size=0");
728 ret
= start_command(&cmd
);
733 * names has a confusing double use: it both provides the list
734 * of just-written new packs, and accepts the name of the cruft
735 * pack we are writing.
737 * By the time it is read here, it contains only the pack(s)
738 * that were just written, which is exactly the set of packs we
739 * want to consider kept.
741 * If `--expire-to` is given, the double-use served by `names`
742 * ensures that the pack written to `--expire-to` excludes any
743 * objects contained in the cruft pack.
745 in
= xfdopen(cmd
.in
, "w");
746 for_each_string_list_item(item
, names
)
747 fprintf(in
, "%s-%s.pack\n", pack_prefix
, item
->string
);
748 for_each_string_list_item(item
, existing_packs
)
749 fprintf(in
, "-%s.pack\n", item
->string
);
750 for_each_string_list_item(item
, existing_kept_packs
)
751 fprintf(in
, "%s.pack\n", item
->string
);
754 out
= xfdopen(cmd
.out
, "r");
755 while (strbuf_getline_lf(&line
, out
) != EOF
) {
756 struct string_list_item
*item
;
758 if (line
.len
!= the_hash_algo
->hexsz
)
759 die(_("repack: Expecting full hex object ID lines only "
760 "from pack-objects."));
762 * avoid putting packs written outside of the repository in the
766 item
= string_list_append(names
, line
.buf
);
767 item
->util
= populate_pack_exts(line
.buf
);
772 strbuf_release(&line
);
774 return finish_command(&cmd
);
777 int cmd_repack(int argc
, const char **argv
, const char *prefix
)
779 struct child_process cmd
= CHILD_PROCESS_INIT
;
780 struct string_list_item
*item
;
781 struct string_list names
= STRING_LIST_INIT_DUP
;
782 struct string_list existing_nonkept_packs
= STRING_LIST_INIT_DUP
;
783 struct string_list existing_kept_packs
= STRING_LIST_INIT_DUP
;
784 struct pack_geometry
*geometry
= NULL
;
785 struct strbuf line
= STRBUF_INIT
;
786 struct tempfile
*refs_snapshot
= NULL
;
791 /* variables to be filled by option parsing */
792 int delete_redundant
= 0;
793 const char *unpack_unreachable
= NULL
;
794 int keep_unreachable
= 0;
795 struct string_list keep_pack_list
= STRING_LIST_INIT_NODUP
;
796 struct pack_objects_args po_args
= {NULL
};
797 struct pack_objects_args cruft_po_args
= {NULL
};
798 int geometric_factor
= 0;
800 const char *cruft_expiration
= NULL
;
801 const char *expire_to
= NULL
;
803 struct option builtin_repack_options
[] = {
804 OPT_BIT('a', NULL
, &pack_everything
,
805 N_("pack everything in a single pack"), ALL_INTO_ONE
),
806 OPT_BIT('A', NULL
, &pack_everything
,
807 N_("same as -a, and turn unreachable objects loose"),
808 LOOSEN_UNREACHABLE
| ALL_INTO_ONE
),
809 OPT_BIT(0, "cruft", &pack_everything
,
810 N_("same as -a, pack unreachable cruft objects separately"),
812 OPT_STRING(0, "cruft-expiration", &cruft_expiration
, N_("approxidate"),
813 N_("with --cruft, expire objects older than this")),
814 OPT_BOOL('d', NULL
, &delete_redundant
,
815 N_("remove redundant packs, and run git-prune-packed")),
816 OPT_BOOL('f', NULL
, &po_args
.no_reuse_delta
,
817 N_("pass --no-reuse-delta to git-pack-objects")),
818 OPT_BOOL('F', NULL
, &po_args
.no_reuse_object
,
819 N_("pass --no-reuse-object to git-pack-objects")),
820 OPT_NEGBIT('n', NULL
, &run_update_server_info
,
821 N_("do not run git-update-server-info"), 1),
822 OPT__QUIET(&po_args
.quiet
, N_("be quiet")),
823 OPT_BOOL('l', "local", &po_args
.local
,
824 N_("pass --local to git-pack-objects")),
825 OPT_BOOL('b', "write-bitmap-index", &write_bitmaps
,
826 N_("write bitmap index")),
827 OPT_BOOL('i', "delta-islands", &use_delta_islands
,
828 N_("pass --delta-islands to git-pack-objects")),
829 OPT_STRING(0, "unpack-unreachable", &unpack_unreachable
, N_("approxidate"),
830 N_("with -A, do not loosen objects older than this")),
831 OPT_BOOL('k', "keep-unreachable", &keep_unreachable
,
832 N_("with -a, repack unreachable objects")),
833 OPT_STRING(0, "window", &po_args
.window
, N_("n"),
834 N_("size of the window used for delta compression")),
835 OPT_STRING(0, "window-memory", &po_args
.window_memory
, N_("bytes"),
836 N_("same as the above, but limit memory size instead of entries count")),
837 OPT_STRING(0, "depth", &po_args
.depth
, N_("n"),
838 N_("limits the maximum delta depth")),
839 OPT_STRING(0, "threads", &po_args
.threads
, N_("n"),
840 N_("limits the maximum number of threads")),
841 OPT_STRING(0, "max-pack-size", &po_args
.max_pack_size
, N_("bytes"),
842 N_("maximum size of each packfile")),
843 OPT_BOOL(0, "pack-kept-objects", &pack_kept_objects
,
844 N_("repack objects in packs marked with .keep")),
845 OPT_STRING_LIST(0, "keep-pack", &keep_pack_list
, N_("name"),
846 N_("do not repack this pack")),
847 OPT_INTEGER('g', "geometric", &geometric_factor
,
848 N_("find a geometric progression with factor <N>")),
849 OPT_BOOL('m', "write-midx", &write_midx
,
850 N_("write a multi-pack index of the resulting packs")),
851 OPT_STRING(0, "expire-to", &expire_to
, N_("dir"),
852 N_("pack prefix to store a pack containing pruned objects")),
856 git_config(repack_config
, &cruft_po_args
);
858 argc
= parse_options(argc
, argv
, prefix
, builtin_repack_options
,
859 git_repack_usage
, 0);
861 if (delete_redundant
&& repository_format_precious_objects
)
862 die(_("cannot delete packs in a precious-objects repo"));
864 if (keep_unreachable
&&
865 (unpack_unreachable
|| (pack_everything
& LOOSEN_UNREACHABLE
)))
866 die(_("options '%s' and '%s' cannot be used together"), "--keep-unreachable", "-A");
868 if (pack_everything
& PACK_CRUFT
) {
869 pack_everything
|= ALL_INTO_ONE
;
871 if (unpack_unreachable
|| (pack_everything
& LOOSEN_UNREACHABLE
))
872 die(_("options '%s' and '%s' cannot be used together"), "--cruft", "-A");
873 if (keep_unreachable
)
874 die(_("options '%s' and '%s' cannot be used together"), "--cruft", "-k");
877 if (write_bitmaps
< 0) {
879 (!(pack_everything
& ALL_INTO_ONE
) || !is_bare_repository()))
881 } else if (write_bitmaps
&&
882 git_env_bool(GIT_TEST_MULTI_PACK_INDEX
, 0) &&
883 git_env_bool(GIT_TEST_MULTI_PACK_INDEX_WRITE_BITMAP
, 0)) {
886 if (pack_kept_objects
< 0)
887 pack_kept_objects
= write_bitmaps
> 0 && !write_midx
;
889 if (write_bitmaps
&& !(pack_everything
& ALL_INTO_ONE
) && !write_midx
)
890 die(_(incremental_bitmap_conflict_error
));
892 if (write_bitmaps
&& po_args
.local
&& has_alt_odb(the_repository
)) {
894 * When asked to do a local repack, but we have
895 * packfiles that are inherited from an alternate, then
896 * we cannot guarantee that the multi-pack-index would
897 * have full coverage of all objects. We thus disable
898 * writing bitmaps in that case.
900 warning(_("disabling bitmap writing, as some objects are not being packed"));
904 if (write_midx
&& write_bitmaps
) {
905 struct strbuf path
= STRBUF_INIT
;
907 strbuf_addf(&path
, "%s/%s_XXXXXX", get_object_directory(),
910 refs_snapshot
= xmks_tempfile(path
.buf
);
911 midx_snapshot_refs(refs_snapshot
);
913 strbuf_release(&path
);
916 packdir
= mkpathdup("%s/pack", get_object_directory());
917 packtmp_name
= xstrfmt(".tmp-%d-pack", (int)getpid());
918 packtmp
= mkpathdup("%s/%s", packdir
, packtmp_name
);
920 collect_pack_filenames(&existing_nonkept_packs
, &existing_kept_packs
,
923 if (geometric_factor
) {
925 die(_("options '%s' and '%s' cannot be used together"), "--geometric", "-A/-a");
926 init_pack_geometry(&geometry
, &existing_kept_packs
, &po_args
);
927 split_pack_geometry(geometry
, geometric_factor
);
930 prepare_pack_objects(&cmd
, &po_args
, packtmp
);
932 show_progress
= !po_args
.quiet
&& isatty(2);
934 strvec_push(&cmd
.args
, "--keep-true-parents");
935 if (!pack_kept_objects
)
936 strvec_push(&cmd
.args
, "--honor-pack-keep");
937 for (i
= 0; i
< keep_pack_list
.nr
; i
++)
938 strvec_pushf(&cmd
.args
, "--keep-pack=%s",
939 keep_pack_list
.items
[i
].string
);
940 strvec_push(&cmd
.args
, "--non-empty");
943 * We need to grab all reachable objects, including those that
944 * are reachable from reflogs and the index.
946 * When repacking into a geometric progression of packs,
947 * however, we ask 'git pack-objects --stdin-packs', and it is
948 * not about packing objects based on reachability but about
949 * repacking all the objects in specified packs and loose ones
950 * (indeed, --stdin-packs is incompatible with these options).
952 strvec_push(&cmd
.args
, "--all");
953 strvec_push(&cmd
.args
, "--reflog");
954 strvec_push(&cmd
.args
, "--indexed-objects");
956 if (repo_has_promisor_remote(the_repository
))
957 strvec_push(&cmd
.args
, "--exclude-promisor-objects");
959 if (write_bitmaps
> 0)
960 strvec_push(&cmd
.args
, "--write-bitmap-index");
961 else if (write_bitmaps
< 0)
962 strvec_push(&cmd
.args
, "--write-bitmap-index-quiet");
964 if (use_delta_islands
)
965 strvec_push(&cmd
.args
, "--delta-islands");
967 if (pack_everything
& ALL_INTO_ONE
) {
968 repack_promisor_objects(&po_args
, &names
);
970 if (existing_nonkept_packs
.nr
&& delete_redundant
&&
971 !(pack_everything
& PACK_CRUFT
)) {
972 for_each_string_list_item(item
, &names
) {
973 strvec_pushf(&cmd
.args
, "--keep-pack=%s-%s.pack",
974 packtmp_name
, item
->string
);
976 if (unpack_unreachable
) {
977 strvec_pushf(&cmd
.args
,
978 "--unpack-unreachable=%s",
980 } else if (pack_everything
& LOOSEN_UNREACHABLE
) {
981 strvec_push(&cmd
.args
,
982 "--unpack-unreachable");
983 } else if (keep_unreachable
) {
984 strvec_push(&cmd
.args
, "--keep-unreachable");
985 strvec_push(&cmd
.args
, "--pack-loose-unreachable");
988 } else if (geometry
) {
989 strvec_push(&cmd
.args
, "--stdin-packs");
990 strvec_push(&cmd
.args
, "--unpacked");
992 strvec_push(&cmd
.args
, "--unpacked");
993 strvec_push(&cmd
.args
, "--incremental");
1001 ret
= start_command(&cmd
);
1006 FILE *in
= xfdopen(cmd
.in
, "w");
1008 * The resulting pack should contain all objects in packs that
1009 * are going to be rolled up, but exclude objects in packs which
1010 * are being left alone.
1012 for (i
= 0; i
< geometry
->split
; i
++)
1013 fprintf(in
, "%s\n", pack_basename(geometry
->pack
[i
]));
1014 for (i
= geometry
->split
; i
< geometry
->pack_nr
; i
++)
1015 fprintf(in
, "^%s\n", pack_basename(geometry
->pack
[i
]));
1019 out
= xfdopen(cmd
.out
, "r");
1020 while (strbuf_getline_lf(&line
, out
) != EOF
) {
1021 struct string_list_item
*item
;
1023 if (line
.len
!= the_hash_algo
->hexsz
)
1024 die(_("repack: Expecting full hex object ID lines only from pack-objects."));
1025 item
= string_list_append(&names
, line
.buf
);
1026 item
->util
= populate_pack_exts(item
->string
);
1028 strbuf_release(&line
);
1030 ret
= finish_command(&cmd
);
1034 if (!names
.nr
&& !po_args
.quiet
)
1035 printf_ln(_("Nothing new to pack."));
1037 if (pack_everything
& PACK_CRUFT
) {
1038 const char *pack_prefix
;
1039 if (!skip_prefix(packtmp
, packdir
, &pack_prefix
))
1040 die(_("pack prefix %s does not begin with objdir %s"),
1042 if (*pack_prefix
== '/')
1045 if (!cruft_po_args
.window
)
1046 cruft_po_args
.window
= po_args
.window
;
1047 if (!cruft_po_args
.window_memory
)
1048 cruft_po_args
.window_memory
= po_args
.window_memory
;
1049 if (!cruft_po_args
.depth
)
1050 cruft_po_args
.depth
= po_args
.depth
;
1051 if (!cruft_po_args
.threads
)
1052 cruft_po_args
.threads
= po_args
.threads
;
1054 cruft_po_args
.local
= po_args
.local
;
1055 cruft_po_args
.quiet
= po_args
.quiet
;
1057 ret
= write_cruft_pack(&cruft_po_args
, packtmp
, pack_prefix
,
1058 cruft_expiration
, &names
,
1059 &existing_nonkept_packs
,
1060 &existing_kept_packs
);
1064 if (delete_redundant
&& expire_to
) {
1066 * If `--expire-to` is given with `-d`, it's possible
1067 * that we're about to prune some objects. With cruft
1068 * packs, pruning is implicit: any objects from existing
1069 * packs that weren't picked up by new packs are removed
1070 * when their packs are deleted.
1072 * Generate an additional cruft pack, with one twist:
1073 * `names` now includes the name of the cruft pack
1074 * written in the previous step. So the contents of
1075 * _this_ cruft pack exclude everything contained in the
1076 * existing cruft pack (that is, all of the unreachable
1077 * objects which are no older than
1078 * `--cruft-expiration`).
1080 * To make this work, cruft_expiration must become NULL
1081 * so that this cruft pack doesn't actually prune any
1082 * objects. If it were non-NULL, this call would always
1083 * generate an empty pack (since every object not in the
1084 * cruft pack generated above will have an mtime older
1085 * than the expiration).
1087 ret
= write_cruft_pack(&cruft_po_args
, expire_to
,
1091 &existing_nonkept_packs
,
1092 &existing_kept_packs
);
1098 string_list_sort(&names
);
1100 close_object_store(the_repository
->objects
);
1103 * Ok we have prepared all new packfiles.
1105 for_each_string_list_item(item
, &names
) {
1106 struct generated_pack_data
*data
= item
->util
;
1108 for (ext
= 0; ext
< ARRAY_SIZE(exts
); ext
++) {
1111 fname
= mkpathdup("%s/pack-%s%s",
1112 packdir
, item
->string
, exts
[ext
].name
);
1114 if (data
->tempfiles
[ext
]) {
1115 const char *fname_old
= get_tempfile_path(data
->tempfiles
[ext
]);
1116 struct stat statbuffer
;
1118 if (!stat(fname_old
, &statbuffer
)) {
1119 statbuffer
.st_mode
&= ~(S_IWUSR
| S_IWGRP
| S_IWOTH
);
1120 chmod(fname_old
, statbuffer
.st_mode
);
1123 if (rename_tempfile(&data
->tempfiles
[ext
], fname
))
1124 die_errno(_("renaming pack to '%s' failed"), fname
);
1125 } else if (!exts
[ext
].optional
)
1126 die(_("pack-objects did not write a '%s' file for pack %s-%s"),
1127 exts
[ext
].name
, packtmp
, item
->string
);
1128 else if (unlink(fname
) < 0 && errno
!= ENOENT
)
1129 die_errno(_("could not unlink: %s"), fname
);
1134 /* End of pack replacement. */
1136 if (delete_redundant
&& pack_everything
& ALL_INTO_ONE
) {
1137 const int hexsz
= the_hash_algo
->hexsz
;
1138 for_each_string_list_item(item
, &existing_nonkept_packs
) {
1140 size_t len
= strlen(item
->string
);
1143 sha1
= item
->string
+ len
- hexsz
;
1145 * Mark this pack for deletion, which ensures that this
1146 * pack won't be included in a MIDX (if `--write-midx`
1147 * was given) and that we will actually delete this pack
1148 * (if `-d` was given).
1150 if (!string_list_has_string(&names
, sha1
))
1151 item
->util
= (void*)(uintptr_t)((size_t)item
->util
| DELETE_PACK
);
1156 struct string_list include
= STRING_LIST_INIT_NODUP
;
1157 midx_included_packs(&include
, &existing_nonkept_packs
,
1158 &existing_kept_packs
, &names
, geometry
);
1160 ret
= write_midx_included_packs(&include
, geometry
,
1161 refs_snapshot
? get_tempfile_path(refs_snapshot
) : NULL
,
1162 show_progress
, write_bitmaps
> 0);
1164 if (!ret
&& write_bitmaps
)
1165 remove_redundant_bitmaps(&include
, packdir
);
1167 string_list_clear(&include
, 0);
1173 reprepare_packed_git(the_repository
);
1175 if (delete_redundant
) {
1177 for_each_string_list_item(item
, &existing_nonkept_packs
) {
1178 if (!((uintptr_t)item
->util
& DELETE_PACK
))
1180 remove_redundant_pack(packdir
, item
->string
);
1184 struct strbuf buf
= STRBUF_INIT
;
1187 for (i
= 0; i
< geometry
->split
; i
++) {
1188 struct packed_git
*p
= geometry
->pack
[i
];
1189 if (string_list_has_string(&names
,
1190 hash_to_hex(p
->hash
)))
1194 strbuf_addstr(&buf
, pack_basename(p
));
1195 strbuf_strip_suffix(&buf
, ".pack");
1197 if ((p
->pack_keep
) ||
1198 (string_list_has_string(&existing_kept_packs
,
1202 remove_redundant_pack(packdir
, buf
.buf
);
1204 strbuf_release(&buf
);
1207 opts
|= PRUNE_PACKED_VERBOSE
;
1208 prune_packed_objects(opts
);
1210 if (!keep_unreachable
&&
1211 (!(pack_everything
& LOOSEN_UNREACHABLE
) ||
1212 unpack_unreachable
) &&
1213 is_repository_shallow(the_repository
))
1214 prune_shallow(PRUNE_QUICK
);
1217 if (run_update_server_info
)
1218 update_server_info(0);
1220 if (git_env_bool(GIT_TEST_MULTI_PACK_INDEX
, 0)) {
1222 if (git_env_bool(GIT_TEST_MULTI_PACK_INDEX_WRITE_BITMAP
, 0))
1223 flags
|= MIDX_WRITE_BITMAP
| MIDX_WRITE_REV_INDEX
;
1224 write_midx_file(get_object_directory(), NULL
, NULL
, flags
);
1228 string_list_clear(&names
, 1);
1229 string_list_clear(&existing_nonkept_packs
, 0);
1230 string_list_clear(&existing_kept_packs
, 0);
1231 clear_pack_geometry(geometry
);