[Linux-cluster] GFS2 filesystem consistency error

Daniel Dehennin daniel.dehennin at baby-gnu.org
Mon Feb 15 14:26:22 UTC 2016

Bob Peterson <rpeterso at redhat.com> writes:


> As Steve mentioned, this means it tried to free a block that was already free.
> The problem might be due to timing issues with regard to changing blocks
> from "unlinked" state to "free" state. I have a number of patches required
> to fix this, but some of them are not even in the upstream kernel yet.
> And there is no guarantee this is the cause or solution for your
> problem.

Ok, I understand.

> As for fixing the file system: Newer versions of fsck.gfs2 should be able to
> fix the file system. If it doesn't fix the file system, perhaps I could
> get a copy of your file system metadata (via "gfs2_edit savemeta") and I
> can see where it's failing. There are some known problems with fsck.gfs2 not
> being able to correctly repair file systems that have been grown with gfs2_grow.
> I've got fixes for that too, but it is all experimental code and none have gone
> upstream yet. Your metadata might help me test it. :)

It's running but looks like it will take a long time and produce a huge

But the start of the “gfs2_edit savemeta” command looks stange to me:

    There are 1073479680 blocks of 4096 bytes in the destination device.
    Reading resource groups...Done. File system size: 1023.734M

Is it saying my FS is 1TB instead of the real 4TB?

Daniel Dehennin
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