collie/sheepdog — Issue #26: kvm segfault under heavy IO
Author: douardda
Created: 2012-03-03 13:27:44+00:00
State: open

I have a testing sheepdog setup consisting of 3 nodes which are also kvm hosts. I am using Debian squeeze with backports and sheedog built from git (at rev 86a25e9b0308ae67821e7fb6b79f51f2841fb745). The sheepdog storage is formatted with 2 copies of the data.

Installed packages on the nodes:

qemu-kvm 1.0+dfsg-8~bpo60+1
linux-image-3.2.0-0.bpo. 3.2.4-1~bpo60+1

VMs are started with libvirt.

I do not much logs buts the segfault in syslog like:

> kvm[17438]: segfault at 401390 ip 00007fd16f3e04d1 sp 00007fd17441fb60 error 4 in kvm

Note that I also have a "reference" VM running on one node of the cluster using a raw image disk as storage that do not segfault.

Is this a known issue?

David