FILE SYSTEMS=======================================================
ext4: delalloc space accounting problem drops data http://bugzilla.kernel.org/show_bug.cgi?id=9329 Kernel: 2.6.24-rc1
No response from developers
Actually, there has been a response (Eric asked in mailing list and created a bug and got answer to the mailing list): http://marc.info/?l=linux-ext4&m=119454449014728&w=2
POSIX Access Control Lists cause bogus file system check errors http://bugzilla.kernel.org/show_bug.cgi?id=9241 Kernel: 2.6.23.1
Andreas did some work, seemed to lose interest.
As I read the bug it seems that the cause was a filesystem with errors (which were in ACL's and thus kernel didn't boot only with ACL's enabled) and fsck fixed the problem... I would close this one as invalid (OK, I know the filesystem had to be corrupted somehow but unless this is at least occasionally reproducible, there's low chance of finding the bug).
Honza