[Gluster-users] KVM guest I/O errors with xfs backed gluster volumes

[Jacob Yundt]

I think I finally made some progress on this bug!

I noticed that all disks in my gluster server(s) have 4K sectors.
Using an older disk with 512 byte sectors, I did _not_ get any errors
on my gluster client / KVM server.  I switched back to using my newer
4K drives and manually set the XFS sector size (sectsz) to 512.  With
the manually set sector size of 512, everything worked as expected.

I think I might be hitting some sort of qemu/libvirt bug.  However,
all of the bugs I found that sound similar[1][2] have already been
fixed in RHEL6.

Anyone else using XFS backed bricks on 4K sector drives to host KVM
images in RHEL6?

-Jacob

[1] https://bugzilla.redhat.com/show_bug.cgi?id=608548
[2] https://bugzilla.redhat.com/show_bug.cgi?id=748902