[Qemu-discuss] Help needed to debug why my VMs stop

[Anuj Agrawal]

Hi All,

I have some VMs that stop arbitrarily at some point and I see the
following in vm logs:

qemu-system-x86_64: /build/buildd/qemu-2.1+dfsg/block.c:3606:
bdrv_error_action: Assertion `error >= 0' failed.
2015-09-25 11:56:58.978+0000: shutting down

Reading up over these, figured that the vm stopped due to an I/O
error. However, I am unable to figure out what caused the I/O error
and if there is anything I can do to prevent it from happening. Or, if
it is a race condition in the code that is being hit for some reason.
In case, it helps, these are data-intensive VMs with few 4T sata
drives attached to them.

In libvirtd.log, I can see this:
2015-09-25 11:56:58.977+0000: 2221: error : qemuMonitorIO:661 :
internal error: End of file from monitor

But I guess, this comes every time a VM is stopped.

Using libvirt version: 1.2.8, package: 1.2.8-0ubuntu11.8

Kindly help.

Thanks,
Anuj Agrawal