[CentOS] DRBD on a xen host: crash on high I/O

Wed Jul 29 14:16:00 UTC 2009
Andrea Dell'Amico <adellam at sevenseas.org>

On Wed, 2009-07-29 at 09:55 -0400, Ross Walker wrote:

> I read on another forum how a user using iSCSI for domUs was  
> experiencing network hangs due to the fact that dom0 didn't have  
> enough scheduler credits to handle the network throughput. That might  
> be related.
> http://lists.centos.org/pipermail/centos-virt/2009-June/001021.html

I'm pretty sure the crash is DRBD related: until the secondary drbd
server is detached, all is working well. There are 23 guests running,
right now, some of them paravirtualized, other full virtualized. Some of
them use files images, other logical volumes (all of them over a drbd
And I don't have a resource starvation, but a kernel crash and an
immediate reboot.

> -Ross

"In six days God created the heaven and the earth. On the seventh day,
Stanley Kubrick sent everything back for modifications."
- http://www.jonhs.com/freemovies/dark_side_of_the_moon.htm

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