On Thu, 2009-10-29 at 20:25 +0100, Guido Grazioli wrote:
2009/10/29 Adam Williamson <awilliam(a)redhat.com>
>
> Hi, guys. Jóhann raised a concern about the potential ext4 corruption
> issue that's currently under discussion upstream:
>
>
http://bugzilla.kernel.org/show_bug.cgi?id=14354
>
> the discussion between Eric and Linus tends towards the theory that this
> is not affecting 2.6.31, but we'd like to have somewhat more certainty
> of this.
It seems (reading slashdot thread about 9.10 release) that ubuntu folks have
added a notice in the release notes warning about the bug.
"Possible corruption of large files with ext4 filesystem
There have been some reports of data corruption with fresh (not
upgraded) ext4 file systems using the Ubuntu 9.10 kernel when writing
to large files (over 512MB). The issue is under investigation, and if
confirmed will be resolved in a post-release update. Users who
routinely manipulate large files may want to consider using ext3 file
systems until this issue is resolved. (453579 [launchpad.net])"
That is not about the same bug. That's about the bug I mentioned at the
end of my mail, the exact paragraph you cut out when quoting me. :)
Someone suggested the dubious Ubuntu report was a case of the verified
upstream bug, but it doesn't look like that to me. The upstream report
is about corruption of _any_ size files _on a dirty shutdown of the
system_. The Ubuntu report is about corruption of only _large_ files,
with no need for any kind of shutdown and reboot before the problem is
observed. They look like different issues.
Personally, as I said, I don't much credit the Ubuntu report, at least
unless some other people independently confirm the same problem.
--
Adam Williamson
Fedora QA Community Monkey
IRC: adamw | Fedora Talk: adamwill AT fedoraproject DOT org
http://www.happyassassin.net