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xen-users
Re: [Xen-users] Dom0 Crashes on High I/O
>> I have mentioned it on xen-devel, and probably on bugzilla. And is one
>> of
>> the reasons to use iSCSI over NFS. Someone told me that it could be
>> fixed
>> by setting the memory overcommit for Linux to 'do not do it'. That is
>> some
>> setting in /etc/sysctl.conf
>
> Henri,
I guess you mean me :)
> To help people understand what you're seeing, can you tell us some more
> about
> your setup? Is it possible that it's a problem like this (which may be
> provoked by such setups as virtual disk files stored on NFS, etc...).
Stupid Dell 1950 with 8GB of memory. A NetApp NFS server or if you like a
Linux one or if you like an OpenSolaris one. Nothing fancy from that point
of view.
> It'd be useful to know whether you'd been able to try the upstream
> XenSource
> XenLinux (which really ought to work, if anything does - otherwise it's
> definitely an upstream XenLinux bug!). Out of interest, where did you
> source
> the rest of your Xen 3.2 installation - Ubuntu packages, source tarball
> from
> Xensource, or ... ?
This quote you refer to is all based on Gentoo Linux.
> Also, I gather this machine is in a remote hosting facility somewhere? Is
> it
> possible that some kind of kernel panic message is being printed to the
> display when crashes? Can someone in the datacentre have a look? Better
> than that would probably be to get a serial line hooked up so that any
> crash-time output can be captured - even if the system is too far gone to
> log
> it to disk. Do you think this might be possible?
If you tell me how to get a dump of Xen on a machine that is actually
crashing I'm happy to assist. Please contact me in private.
Stefan
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