2011-06-06 03:59:50

by micah anderson

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Subject: ext4 corruption


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2011-06-06 04:19:53

by Theodore Ts'o

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Subject: Re: ext4 corruption

On Sun, Jun 05, 2011 at 11:59:34PM -0400, Micah Anderson wrote:
>
> I previously wrote about a recent conversion from ext3 to ext4 (on
> Debian Squeeze), which went well. However, I seem to be having problems
> with the ext4 filesystem.

Are you using the 2.6.32 kernel (the Debian squeeze default)? Try
updating to 2.6.39.1, and see if that stablizes things. There have
been a huge number of bug fixes since 2.6.32, and no one has been
really backporting patches to such an ancient kernel. This is one of
the ways in which Debian Obsolete^H^H^H^H^H^H^H^H Stable can be
somewhat of a disadvantage. Unlike the RHEL kernels, no one is
backporting ext4 bugfixes to older Debian stable kernels, and ext4 was
still getting a lot of bug fixes in the 2.6.32 days.

That being said, you're seeing some pretty severe inode *and* block
allocation bitmap problems, and that doesn't sound like anything I
remember even back in the 2.6.32 days. It does make me wonder about
the stability of the hardware and of the software raid code...

- Ted