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| author | David Steven Tweed <d.s.tweed@reading.ac.uk> | 2008-02-07 02:55:14 (GMT) |
|---|---|---|
| committer | Junio C Hamano <gitster@pobox.com> | 2008-02-11 20:22:58 (GMT) |
| commit | 8464010f974245b1e392d34ddbfb914fcf3d8c23 (patch) | |
| tree | 420e72fb71c667be1e8518f71a7f81cd5951810e | |
| parent | 65ae89bc315753e7bb31e941e77e002003665bc0 (diff) | |
| download | git-8464010f974245b1e392d34ddbfb914fcf3d8c23.zip git-8464010f974245b1e392d34ddbfb914fcf3d8c23.tar.gz git-8464010f974245b1e392d34ddbfb914fcf3d8c23.tar.bz2 | |
Make git prune remove temporary packs that look like write failures
Write errors when repacking (eg, due to out-of-space conditions)
can leave temporary packs (and possibly other files beginning
with "tmp_") lying around which no existing
codepath removes and which aren't obvious to the casual user.
These can also be multi-megabyte files wasting noticeable space.
Unfortunately there's no way to definitely tell in builtin-prune
that a tmp_ file is not being used by a concurrent process,
such as a fetch. However, it is documented that pruning should
only be done on a quiet repository and --expire is honoured
(using code from Johannes Schindelin, along with a test case
he wrote) so that its safety is the same as that of loose
object pruning.
Since they might be signs of a problem (unlike orphaned loose
objects) the names of any removed files are printed.
Signed-off-by: David Tweed (david.tweed@gmail.com)
Acked-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
| -rw-r--r-- | builtin-prune.c | 39 | ||||
| -rw-r--r-- | t/t5304-prune.sh | 32 |
2 files changed, 71 insertions, 0 deletions
diff --git a/builtin-prune.c b/builtin-prune.c index b5e7684..bb8ead9 100644 --- a/builtin-prune.c +++ b/builtin-prune.c @@ -83,6 +83,44 @@ static void prune_object_dir(const char *path) } } +/* + * Write errors (particularly out of space) can result in + * failed temporary packs (and more rarely indexes and other + * files begining with "tmp_") accumulating in the + * object directory. + */ +static void remove_temporary_files(void) +{ + DIR *dir; + struct dirent *de; + char* dirname=get_object_directory(); + + dir = opendir(dirname); + if (!dir) { + fprintf(stderr, "Unable to open object directory %s\n", + dirname); + return; + } + while ((de = readdir(dir)) != NULL) { + if (!prefixcmp(de->d_name, "tmp_")) { + char name[PATH_MAX]; + int c = snprintf(name, PATH_MAX, "%s/%s", + dirname, de->d_name); + if (c < 0 || c >= PATH_MAX) + continue; + if (expire) { + struct stat st; + if (stat(name, &st) != 0 || st.st_mtime >= expire) + continue; + } + printf("Removing stale temporary file %s\n", name); + if (!show_only) + unlink(name); + } + } + closedir(dir); +} + int cmd_prune(int argc, const char **argv, const char *prefix) { int i; @@ -115,5 +153,6 @@ int cmd_prune(int argc, const char **argv, const char *prefix) sync(); prune_packed_objects(show_only); + remove_temporary_files(); return 0; } diff --git a/t/t5304-prune.sh b/t/t5304-prune.sh new file mode 100644 index 0000000..6560af7 --- /dev/null +++ b/t/t5304-prune.sh @@ -0,0 +1,32 @@ +#!/bin/sh +# +# Copyright (c) 2008 Johannes E. Schindelin +# + +test_description='prune' +. ./test-lib.sh + +test_expect_success setup ' + + : > file && + git add file && + test_tick && + git commit -m initial && + git gc + +' + +test_expect_success 'prune stale packs' ' + + orig_pack=$(echo .git/objects/pack/*.pack) && + : > .git/objects/tmp_1.pack && + : > .git/objects/tmp_2.pack && + test-chmtime -86501 .git/objects/tmp_1.pack && + git prune --expire 1.day && + test -f $orig_pack && + test -f .git/objects/tmp_2.pack && + ! test -f .git/objects/tmp_1.pack + +' + +test_done |