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RE: [Xen-users] Hard powered off, now domU hangs at boot. Help.

To: "'Jamie J. Begin'" <begin@xxxxxxxxxxxxxxx>, <xen-users@xxxxxxxxxxxxxxxxxxx>
Subject: RE: [Xen-users] Hard powered off, now domU hangs at boot. Help.
From: "Jamie J. Begin" <begin@xxxxxxxxxxxxxxx>
Date: Tue, 27 May 2008 12:43:39 -0400
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> -----Original Message-----
> From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx [mailto:xen-users-
> bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Jamie J. Begin
> Sent: Tuesday, May 27, 2008 12:07 PM
> To: xen-users@xxxxxxxxxxxxxxxxxxx
> Subject: [Xen-users] Hard powered off, now domU hangs at boot. Help.
> A failed UPS caused the physical server to go down hard.  Someone in the
> office attempted to restart the server without the external SATA drive
> containing the domU images correctly attached. Now when I attempt to boot
> the domU, it hangs. The same problem occurs if I try to boot the domU into
> single user mode as well.  I've run fsck on dom0 and didn't find any
> problems.  Does anyone have any suggestions?  This is rather urgent.
> Both the domU and dom0 are running CentOS 5.1 x64. The console output is:
> Started domain server
> Bootdata ok (command line is  ro root=/dev/VolGroup00/LogVol00)
> Linux version 2.6.18-53.1.14.el5xen (mockbuild@xxxxxxxxxxxxxxxxxxx) (gcc
> version 4.1.2 20070626 (Red Hat 4.1.2-14)) #1 SMP Wed Mar 5 12:08:17 EST
> 2008
> BIOS-provided physical RAM map:
>  Xen: 0000000000000000 - 0000000020800000 (usable)
::snip console log::
> SELinux:  Disabled at runtime.
> audit(1211903468.794:2): selinux=0 auid=4294967295

Crisis averted. 

The domU filesystem was screwed up a bit, but fsck was able to fix.  The
reason it appeared to hang at the console is that I had forgotten that I had
configured the domU to popup a VNC session; all the interesting information
was being written there rather than to the console.

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