I am actually curious about one more thing. In the image -> rbd case, is rbd_secret_uuid config option really used? I am running nova-compute as a non-root user, so virsh secret shouldn't be accessible unless we get it via rootwrap. I had to make ceph keyring file readable to the nova-compute user for the whole thing to work...
On Friday, October 24, 2014, Xu (Simon) Chen <xche...@gmail.com> wrote: > Thanks. I found the commit on git and confirms 0.80.7 fixes the issue. > > On Friday, October 24, 2014, Josh Durgin <josh.dur...@inktank.com > <javascript:_e(%7B%7D,'cvml','josh.dur...@inktank.com');>> wrote: > >> On 10/24/2014 08:21 AM, Xu (Simon) Chen wrote: >> >>> Hey folks, >>> >>> I am trying to enable OpenStack to use RBD as image backend: >>> https://bugs.launchpad.net/nova/+bug/1226351 >>> >>> For some reason, nova-compute segfaults due to librados crash: >>> >>> ./log/SubsystemMap.h: In function 'bool >>> ceph::log::SubsystemMap::should_gather(unsigned int, int)' thread >>> 7f1b477fe700 time 2014-10-24 03:20:17.382769 >>> ./log/SubsystemMap.h: 62: FAILED assert(sub < m_subsys.size()) >>> ceph version 0.80.5 (38b73c67d375a2552d8ed67843c8a65c2c0feba6) >>> 1: (()+0x42785) [0x7f1b4c4db785] >>> 2: (ObjectCacher::flusher_entry()+0xfda) [0x7f1b4c53759a] >>> 3: (ObjectCacher::FlusherThread::entry()+0xd) [0x7f1b4c54a16d] >>> 4: (()+0x6b50) [0x7f1b6ea93b50] >>> 5: (clone()+0x6d) [0x7f1b6df3e0ed] >>> NOTE: a copy of the executable, or `objdump -rdS <executable>` is needed >>> to interpret this. >>> terminate called after throwing an instance of 'ceph::FailedAssertion' >>> Aborted >>> >>> I feel that there is some concurrency issue, since this sometimes happen >>> before and sometimes after this line: >>> https://github.com/openstack/nova/blob/master/nova/virt/ >>> libvirt/rbd_utils.py#L208 >>> >>> Any idea what are the potential causes of the crash? >>> >>> Thanks. >>> -Simon >>> >> >> This is http://tracker.ceph.com/issues/8912, fixed in the latest >> firefly and dumpling releases. >> >>
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