Ceph » rbd

Hi,

i recompiled hammer from current hammer-backport branch which includes #15033. I just replaced librbd and kept the original 0.94.6 versions of ceph-osd running.

While doing sync inside the guest and doing afterwards a snapshot the vm still started to hang completely doing no I/O anymore.

- Is the hammer-backport incomplete?
- do i also need newer ceph-osd processes?

@Stefan Kleijkers: are you sure this fix was in hammer-backports when you ran your test or are you saying you merged it manually? It looks like it was merged into hammer-backports only yesterday with commit af09e99c062fde6091ca2ffc6b7f1c0241eabfd0.

Hammer Backports was force pushed.

last time i tested it there was the following commit:

commit 7d6737ea82f23f50654a9f17cc8d2cb50c1afe4b
Merge: 297ed62 281d63d
Author: Xiaoxi Chen <xiaoxchen@ebay.com>
Date: Fri Mar 11 20:49:42 2016 -0700

Merge 8011: hammer: librbd: possible QEMU deadlock after creating image snapshots

Reviewed-by: Xiaoxi Chen <xiaoxchen@ebay.com>

hammer-backports is not a branch that is for usage, it is solely for test purposes

but this backport was just merged into the hammer branch ;-)

@Stefan Kleijkers: are you able to recreate your lockup and provide "debug rbd=20"-level logging?