From: linux@horizon.com
Date: Sat, 29 Jul 2006 22:41:06 GMT
Subject: Re: git prune pig slow
Message-ID: <20060729224106.12312.qmail@science.horizon.com>

> Btw, another alternative to "git prune" is actually to do
>
>	git repack -a -d
>
> and then just delete all unpacked objects.

No, that's dangerous too.  The index file is considered part of the root
set for git-fsck-objects, but not for git-repack.

Example script:

$ git-init-db
$ cat > hello.c
#include <stdio.h>

int
main(void)
{
        puts("Hello, world!");
        return 0;
}
$ git-update-index --add hello.c
$ git-repack -a -d
Generating pack...
Done counting 0 objects.
Nothing new to pack.
$ rm .git/objects/67/159ba959e0a0cd6157bf04d5dad66af59383c2
rm: remove write-protected regular file `.git/objects/67/159ba959e0a0cd6157bf04d5dad66af59383c2'? y
$ git commit
error: invalid object 67159ba959e0a0cd6157bf04d5dad66af59383c2
fatal: git-write-tree: error building trees