Re: [libvirt] Cannot dump core: error: Requested operation is not valid: domain is marked for auto destroy
On Thu, Oct 08, 2015 at 12:06:09PM +0100, Richard W.M. Jones wrote:
I wonder if there's a reason why it is not possible to dump the core
of a KVM domain which is set to autodestroy.
$ virsh dump guestfs-4xe592eyqq4rfnk9 /tmp/guestfs-4xe592eyqq4rfnk9.core
error: Failed to core dump domain guestfs-4xe592eyqq4rfnk9 to
/tmp/guestfs-4xe592eyqq4rfnk9.core
error: Requested operation is not valid: domain is marked for auto destroy
All libguestfs domains have the autodestroy flag, but I am trying to
debug one which is crashing in the guest (RHBZ#1269779) and having the
ability to dump it would be very helpful.
I added the following patch to libvirt, which allowed me to dump the
domain with no apparent ill effects.
Yep, I see no reason to block use of the core dump API. Looking at the
patch I think this is probably just an over-sight - ie it is merely
blocked as an accidental side-effect of us blocking migration.
Regards,
Daniel
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