On 01/13/2015 02:43 PM, Scott Sullivan wrote: > I have what appears to be a bug when pivoting a disk during a block copy that > is not yet 100% finished, resulting in the pivot command hanging. I have > verified this problem on libvirt 1.2.10. > > Here's what Im seeing (transient guest): > > 1.) Start the block copy: > > [root@host ~]# virsh blockcopy f20-SPICE vda /dev/sdc --format=raw --blockdev > Block Copy started > [root@host ~]# > > 2.) Query status to see it works/is started > > [root@host ~]# virsh blockjob --info f20-SPICE vda > Block Copy: [ 1 %] > > [root@host ~]# > > 3.) Attempt the pivot before mirror reaches 100% (this makes cmd hang) > > [root@test-parent-kvm ~]# virsh blockjob f20-SPICE vda --pivot > ^^^ cmd is now hanging > > ------------------------------------------------------------- > > When its hanging, I see this in /var/log/libvirt/libvirtd.log > > 19:29:33.376+0000: 1845: error : qemuDomainBlockPivot:15367 : block copy > still active: disk 'vda' not ready for pivot yet > 19:30:31.000+0000: 1842: warning : qemuDomainObjBeginJobInternal:1376 : > Cannot start job (query, none) for domain f20-SPICE; current job is (modify, > none) owned by (1845, 0) > 19:30:31.000+0000: 1842: error : qemuDomainObjBeginJobInternal:1381 : Timed > out during operation: cannot acquire state change lock > > This then makes other commands querying this domain hang as well, such as: > > virsh blockjob --info f20-SPICE vda > > With this being put into log: > > 19:30:31.000+0000: 1842: error : qemuDomainObjBeginJobInternal:1381 : Timed > out during operation: cannot acquire state change lock > 19:34:45.568+0000: 1841: error : virNetSocketReadWire:1571 : End of file > while reading data: Input/output error > > Is this expected behavior? It would be nice if on step #3 instead of hanging > the command returned in an error state saying cannot pivot because the mirror > is not yet 100% or similar. I am happy to test later versions or patches as > needed.
I forgot to mention, I am using QEMU 2.2.0 in this case. Libvirt version (as mentioned earlier) is 1.2.10. -- libvir-list mailing list libvir-list@redhat.com https://www.redhat.com/mailman/listinfo/libvir-list
