Hi, Could you send output of gluster volume info and also exact command you are using to start VM's and what cache settings you are using with KVM? -samuli Paul Penev <ppquant@xxxxxxxxx> kirjoitti 21.4.2014 kello 10.47: > Ok, here is one more hint that point in the direction of libgfapi not > re-establishing the connections to the bricks after they come back > online: if I migrate the KVM machine (live) from one node to another > after the bricks are back online, and I kill the second brick, the KVM > will not suffer from disk problems. It is obvious that during > migration, the new process on the new node is forced to reconnect to > the gluster volume, hence reestablishing both links. After this it is > ready to loose one of the links without problems. > > Steps to replicate: > > 1. Start KVM VM and boot from a replicated volume > 2. killall -KILL glusterfsd on one brick (brick1). Verify the the kvm > is still working. > 3. Bring back the glusterfsd on brick1. > 4. heal the volume (gluster vol heal <vol>) and wait until gluster vol > heal <vol> info shows no self-heal backlog. > 5. Now migrate the KVM from one node to another node. > 6. killall -KILL glusterfsd on the second brick (brick2). > 7. Verify that KVM is still working (!) It would die from disk errors > before, if step 5 was not executed. > 8. Bring back glusterfsd on brick2, heal and enjoy. > 9. repeat at will: The KVM will never die again, provided you migrate > is once before brick failure. > > What this means to me: there's a problem in libgfapi, gluster 3.4.2 > and 3.4.3 (at least) and/or kvm 1.7.1 (I'm running the latest 1.7 > source tree in production). > > Joe: we're in your hands. I hope you find the problem somewhere. > > Paul. > _______________________________________________ > Gluster-users mailing list > Gluster-users@xxxxxxxxxxx > http://supercolony.gluster.org/mailman/listinfo/gluster-users _______________________________________________ Gluster-users mailing list Gluster-users@xxxxxxxxxxx http://supercolony.gluster.org/mailman/listinfo/gluster-users
