Ceph

05/17/2015

01:09 AM rbd Bug #10116: Ceph vm guest disk lockup when using fio

I haven't tested it yet, but its possible this kernel bug is what was biting me:
https://groups.google.com/forum/#!t... Brad House

11/18/2014

02:21 PM rbd Bug #10116: Ceph vm guest disk lockup when using fio

As per jdillaman's suggestion on IRC, I have backed off to the PVE 2.6.32-34-pve kernel from 3.10.0-5-pve and can no ... Brad House

12:49 PM rbd Bug #10116: Ceph vm guest disk lockup when using fio

second batch dump from same locked process as requested Brad House

12:43 PM rbd Bug #10116: Ceph vm guest disk lockup when using fio

and a 3rd for good measure Brad House

12:41 PM rbd Bug #10116: Ceph vm guest disk lockup when using fio

another attempt and trace Brad House

12:30 PM rbd Bug #10116: Ceph vm guest disk lockup when using fio

Attached gdb output with libc and qemu debug symbols. Brad House

05:27 AM rbd Bug #10116: Ceph vm guest disk lockup when using fio

Attacked is the blktrace of the latest lockup.
Then the qemu output exceeded your max file size (by a couple of KB),... Brad House

04:12 AM rbd Bug #10116: Ceph vm guest disk lockup when using fio

Sure, I'll do that this morning first. Then I found the repo that proxmox is using to build qemu-kvm, so I'll rebuil... Brad House

11/17/2014

02:26 PM rbd Bug #10116: Ceph vm guest disk lockup when using fio

Using krbd instead of librbd with qemu doesn't hang, however, in the guest with dd, the total sequential performance ... Brad House

11:05 AM rbd Bug #10116: Ceph vm guest disk lockup when using fio

blktrace and qemu log attached as requested. I could not gracefully kill blktrace as the vm hardlocked so hopefully ... Brad House