Messages in this thread | | | From | Nix <> | Subject | Re: Apparent serious progressive ext4 data corruption bug in 3.6.3 (and other stable branches?) | Date | Wed, 24 Oct 2012 12:45:40 +0100 |
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On 24 Oct 2012, Theodore Ts'o stated:
> Journal flushes outside of an unmount does > happen as part of online resizing, the FIBMAP ioctl, or when the file > system is frozen. But it didn't sound like Toralf or Nix was using > any of those features.
Quite so -- the corrupted filesystems have space reserved for resizing, and one of them has been resized, years ago, but I haven't resized either of them with this kernel, or with any kernel numbered 3.x for that matter.
> Toralf, Nix, if you could try applying this patch (at the end of this > message), and let me know how and when the WARN_ON triggers, and if it > does, please send the empty_bug_workaround plus the WARN_ON(1) report. > I know about the case where a file system is mounted and then > immediately unmounted, but we don't think that's the problematic case. > If you see any other cases where WARN_ON is triggering, it would be > really good to know....
I'll give it a test later today, after another backup has finished. Daily backups are normally overkill, but I don't think they are right now.
-- NULL && (void)
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