Re: [Xen-users] xen hypervisor does not like my Dom0 LVM partition: I/O Errors

[Jeff Swicegood <jguru108@xxxxxxxxx>]

A check of the logs shows you are right--there were no lost interrupt messages. I  just assumed since it crashed it was the same situation.  But syslog is one of the first services to go when the crash starts happening, so all those I/O errors and the like are usually not logged but I can see them in the terminal flying by. I cannot write to any files when the crash is happening

so I cannot capture xl dmesg very well. I  just assumed since it crashed it was the same situation. I am not able to verify if it is reporting a lost interrupt. In fact the only error at all was: 

[31832.152507] Mount of device (uid: 0) not owned by requested user (uid: 1000)

[31832.152655] Reading sb failed; rc = [-1]

Updating grub with the boot option ioapic_ack=old did not help.

On Tue, Nov 29, 2016 at 5:12 AM Roger Pau Monné <roger.pau@xxxxxxxxxx> wrote:

On Tue, Nov 29, 2016 at 01:39:15AM +0000, Jeff Swicegood wrote:
> Oops, forgot to do the debug-keys i:

[...]

Has this capture been taken after the system complained about lost interrupts?

There doesn't seem to be any pending or unacked interrupts, but I've also seen
similar issues on some boxes with multiple IO APICs. Could you pass
ioapic_ack=old on the Xen command line[0] and give it a go?

Roger.

[0] http://xenbits.xen.org/docs/unstable/misc/xen-command-line.html

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