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Merge branch 'tb/cruft-packs'

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A mechanism to pack unreachable objects into a "cruft pack",
instead of ejecting them into loose form to be reclaimed later, has
been introduced.

* tb/cruft-packs:
  sha1-file.c: don't freshen cruft packs
  builtin/gc.c: conditionally avoid pruning objects via loose
  builtin/repack.c: add cruft packs to MIDX during geometric repack
  builtin/repack.c: use named flags for existing_packs
  builtin/repack.c: allow configuring cruft pack generation
  builtin/repack.c: support generating a cruft pack
  builtin/pack-objects.c: --cruft with expiration
  reachable: report precise timestamps from objects in cruft packs
  reachable: add options to add_unseen_recent_objects_to_traversal
  builtin/pack-objects.c: --cruft without expiration
  builtin/pack-objects.c: return from create_object_entry()
  t/helper: add 'pack-mtimes' test-tool
  pack-mtimes: support writing pack .mtimes files
  chunk-format.h: extract oid_version()
  pack-write: pass 'struct packing_data' to 'stage_tmp_packfiles'
  pack-mtimes: support reading .mtimes files
  Documentation/technical: add cruft-packs.txt
This commit is contained in:
Junio C Hamano
2022-06-03 14:30:37 -07:00
parent 37d4ae58ef a613164257
commit a50036da1a
32 changed files with 1853 additions and 102 deletions
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18
midx.c
View File

@ -41,18 +41,6 @@
#define PACK_EXPIRED UINT_MAX
static uint8_t oid_version(void)
{
switch (hash_algo_by_ptr(the_hash_algo)) {
case GIT_HASH_SHA1:
return 1;
case GIT_HASH_SHA256:
return 2;
default:
die(_("invalid hash version"));
}
}
const unsigned char *get_midx_checksum(struct multi_pack_index *m)
{
return m->data + m->data_len - the_hash_algo->rawsz;
@ -134,9 +122,9 @@ struct multi_pack_index *load_multi_pack_index(const char *object_dir, int local
m->version);
hash_version = m->data[MIDX_BYTE_HASH_VERSION];
if (hash_version != oid_version()) {
if (hash_version != oid_version(the_hash_algo)) {
error(_("multi-pack-index hash version %u does not match version %u"),
hash_version, oid_version());
hash_version, oid_version(the_hash_algo));
goto cleanup_fail;
}
m->hash_len = the_hash_algo->rawsz;
@ -420,7 +408,7 @@ static size_t write_midx_header(struct hashfile *f,
{
hashwrite_be32(f, MIDX_SIGNATURE);
hashwrite_u8(f, MIDX_VERSION);
hashwrite_u8(f, oid_version());
hashwrite_u8(f, oid_version(the_hash_algo));
hashwrite_u8(f, num_chunks);
hashwrite_u8(f, 0); /* unused */
hashwrite_be32(f, num_packs);