[Xen-bugs] [Bug 233] New: system hangs/freezes under moderate I/O load

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http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=233

           Summary: system hangs/freezes under moderate I/O load
           Product: Xen
           Version: 2.0
          Platform: x86
        OS/Version: Linux-2.6
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Unspecified
        AssignedTo: xen-bugs@xxxxxxxxxxxxxxxxxxx
        ReportedBy: r.post@xxxxxxx


On a Dell 1850 dual xeon, xen 2.0.7 freezes under moderate I/O load. This is
with only domain0 active. After a varing amount of time the system freezes up
completely. No message is displayed on the console. Only with a power-cycle the
system can be rebooted.

The problem can be reproduced by just writing (dd) a large amount of data (10's
of MBs) to a file. This has been reproduced with both hyperthreading on and off,
on scsi disks on both a megaraid controller, a QLA6312 and a LSI53C1030.

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