[Xen-bugs] [Bug 493] New: scsi0 (128:0): rejecting I/O to offline device

[bugzilla-daemon@xxxxxxxxxxxxxxxxxxx]

http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=493

           Summary: scsi0 (128:0): rejecting I/O to offline device
           Product: Xen
           Version: unstable
          Platform: x86-64
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Hypervisor
        AssignedTo: xen-bugs@xxxxxxxxxxxxxxxxxxx
        ReportedBy: dbarrera@xxxxxxxxxx
                CC: hohnbaum@xxxxxxxxxx,pl@xxxxxxxxxx


Running 11 domUs on Xen unstable, changeset 8671, SLES 9 SP2 based system, IBM
xSeries 460, with 8GB of RAM. The system has two SCSI drives, sda and sdb
(SAS/SATA) drives that use the AIC94xx driver. I seem to have lost the sdb
drive. I have several domUs who reside on the sdb drive and are erroring as 
follows:

x460-xentest-vm11 login: root
end_request: I/O error, dev sdb15, sector 11404024

Dmesg on dom0 shows hundreds of messages indicating "rejecting I/O to offline
device", which is sdb.

dmesg output on dom0:
[...]
Jan 26 11:42:45 x460-xentest kernel: (scsi0: Ch 1 Id 128 Lun 0): Abort requested
for SCSI cmd ffff880030dc7c80, opcode 0x2a.
Jan 26 11:43:01 x460-xentest kernel: (scsi0: Ch 1 Id 128 Lun 0): Abort requested
for SCSI cmd ffff880015280080, opcode 0x2a.
Jan 26 11:43:01 x460-xentest kernel: (scsi0: Ch 1 Id 128 Lun 0): Cmd
ffff880015280080 not found.
Jan 26 11:43:11 x460-xentest kernel: (scsi0: Ch 1 Id 128 Lun 0): Abort requested
for SCSI cmd ffff880015280080, opcode 0x0.
Jan 26 11:43:11 x460-xentest kernel: (scsi0: Ch 1 Id 128 Lun 0): Cmd
ffff880015280080 found on device queue.
Jan 26 11:43:11 x460-xentest kernel: (scsi0: Ch 1 Id 128 Lun 0): Abort requested
for SCSI cmd ffff8800189f4980, opcode 0x2a.
Jan 26 11:43:11 x460-xentest kernel: (scsi0: Ch 1 Id 128 Lun 0): Cmd
ffff8800189f4980 not found.
Jan 26 11:43:21 x460-xentest kernel: (scsi0: Ch 1 Id 128 Lun 0): Abort requested
for SCSI cmd ffff8800189f4980, opcode 0x0.
Jan 26 11:43:21 x460-xentest kernel: (scsi0: Ch 1 Id 128 Lun 0): Cmd
ffff8800189f4980 found on device queue.
Jan 26 11:43:21 x460-xentest kernel: (scsi0: Ch 1 Id 128 Lun 0): Abort requested
for SCSI cmd ffff8800284aeb80, opcode 0x2a.
Jan 26 11:43:21 x460-xentest kernel: (scsi0: Ch 1 Id 128 Lun 0): Cmd
ffff8800284aeb80 not found.
Jan 26 11:43:31 x460-xentest kernel: (scsi0: Ch 1 Id 128 Lun 0): Abort requested
for SCSI cmd ffff8800284aeb80, opcode 0x0.
Jan 26 11:43:31 x460-xentest kernel: (scsi0: Ch 1 Id 128 Lun 0): Cmd
ffff8800284aeb80 found on device queue.
Jan 26 11:48:22 x460-xentest kernel: (scsi0: Ch 1 Id 128 Lun 0): Abort requested
for SCSI cmd ffff880030dc7680, opcode 0x2a.
Jan 26 11:48:22 x460-xentest kernel: (scsi0: Ch 1 Id 128 Lun 0): Cmd
ffff880030dc7680 not found.
Jan 26 11:48:22 x460-xentest kernel: to offline device
Jan 26 11:48:22 x460-xentest kernel: scsi0 (128:0): rejecting I/O to offline 
device
Jan 26 11:48:54 x460-xentest last message repeated 24345 times

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