[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-users] Possible bug with scsi disk and Xen
Hi, I have been tracking a bug affecting all my servers running Debian Squeeze for more than a month now, and I desperately need your help :) I have 10 Sun v20z servers (2*66GB SCSI disk in RAID 1 == mirror). 4 of them are running Debian Squeeze with the latest Xen Debian kernel (2.6.32-5-xen-amd64 == 2.6.32-29). The rest are running Debian Lenny (2.6.26-2-xen-amd64 == 2.6.26-26lenny1).
On a Squeeze boxe, under very high IO (such as running a IO stress test, ie bonnie++), server starts behaving weirdly and I see messages like these in kernel.log : [see attachement]. Then the server becomes totally unresponsive (but doesn't "freeze") and commands such as "ls" or "reboot" don't work anymore. I have to do an hard reboot. After the server has reboot, the RAID array seems degraded (I am using the mpt-status command) and starts rebuilding. After several hours, the raid array is "fine" ("clean"). The raid controler is "LSI53C1030" U320, with driver "Fusion MPT SPI Host driver 3.04.06". I have attached the result of "lsmod".
None of my Lenny boxes are affected by this issue, all of my Squeeze boxes are.
What does it have to do with Xen ? When I boot my Squeeze boxes without the Xen hypervisor but the same Xen kernel, bonnie++ runs absolutely fine. The issue appears only with the Xen hypervisor loaded.
There is a debian bug report for this : http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=603727
Any suggestion ?
Thanks !
Attachment:
dmesg_output Attachment:
lsmod_output _______________________________________________ Xen-users mailing list Xen-users@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-users
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