Thanks Josh. I will respond when I have something useful! On Wed, Mar 20, 2013 at 4:32 PM, Josh Durgin <josh.durgin@xxxxxxxxxxx> wrote: > On 03/20/2013 01:19 PM, Josh Durgin wrote: >> >> On 03/20/2013 01:14 PM, Stefan Priebe wrote: >>> >>> Hi, >>> >>>> In this case, they are format 2. And they are from cloned snapshots. >>>> Exactly like the following: >>>> >>>> # rbd ls -l -p volumes >>>> NAME SIZE >>>> PARENT FMT PROT LOCK >>>> volume-099a6d74-05bd-4f00-a12e-009d60629aa8 5120M >>>> images/b8bdda90-664b-4906-86d6-dd33735441f2@snap 2 >>>> >>>> I'm doing an OpenStack boot-from-volume setup. >>> >>> >>> OK i've never used cloned snapshots so maybe this is the reason. >>> >>>>> strange i've never seen this. Which qemu version? >>>> >>>> >>>> # qemu-x86_64 -version >>>> qemu-x86_64 version 1.0 (qemu-kvm-1.0), Copyright (c) 2003-2008 >>>> Fabrice Bellard >>>> >>>> that's coming from Ubuntu 12.04 apt repos. >>> >>> >>> maybe you should try qemu 1.4 there are a LOT of bugfixes. qemu-kvm does >>> not exist anymore it was merged into qemu with 1.3 or 1.4. >> >> >> This particular problem won't be solved by upgrading qemu. It's a ceph >> bug. Disabling caching would work around the issue. >> >> Travis, could you get a log from qemu of this happening with: >> >> debug ms = 20 >> debug objectcacher = 20 >> debug rbd = 20 >> log file = /path/writeable/by/qemu > > > If it doesn't reproduce with those settings, try changing debug ms to 1 > instead of 20. > > >> From those we can tell whether the issue is on the client side at least, >> and hopefully what's causing it. >> >> Thanks! >> Josh > > -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
