Ceph

This should be an error returned up to the user, not an assert.

From https://www.redhat.com/archives/libvirt-users/2012-August/msg00028.html:

The issue was the lack of the auth element.

qemu has access to /etc/ceph/ceph.conf. Specifying the host elements in the source element caused a crash:

error: Failed to start domain test0
error: internal error process exited while connecting to monitor: char device redirected to /dev/pts/3
server name not found: thinkmate3:6789;thinkmate4:6789 (No such file or directory)
unable to parse addrs in 'thinkmate3:6789;thinkmate4:6789'
mon/MonClient.cc: In function 'void MonClient::_pick_new_mon()' thread 7fd1de5d67c0 time 2012-08-06 15:40:38.191920
mon/MonClient.cc: 424: FAILED assert(monmap.size() > 0)
 ceph version 0.48argonaut (commit:c2b20ca74249892c8e5e40c12aa14446a2bf2030)
 1: (MonClient::_pick_new_mon()+0x40a) [0x7fd1dd6f4e8a]
 2: (MonClient::_reopen_session()+0x187) [0x7fd1dd6f8c47]
 3: (MonClient::authenticate(double)+0x1aa) [0x7fd1dd6f9fea]
 4: (librados::RadosClient::connect()+0xb6c) [0x7fd1dd63d6ec]
 5: (()+0x94393) [0x7fd1de698393]
 6: (()+0x801e5) [0x7fd1de6841e5]
 7: (()+0x80366) [0x7fd1de684366]
 8: (()+0x802d9) [0x7fd1de6842d9]
 9: (()+0x80ee7) [0x7fd1de684ee7]
 10: (()+0xa3b03) [0x7fd1de6a7b03]
 11: (()+0xfec4b) [0x7fd1de702c4b]
 12: (()+0x11fbc2