Re: [Qemu-devel] qemu + rbd block driver with cache=writeback, is live migration safe ?

2014-04-18 Thread Alexandre DERUMIER
Cc: qemu-devel qemu-devel@nongnu.org, ceph-us...@lists.ceph.com Envoyé: Mardi 15 Avril 2014 11:36:22 Objet: Re: [Qemu-devel] qemu + rbd block driver with cache=writeback, is live migration safe ? Am 12.04.2014 um 17:01 hat Alexandre DERUMIER geschrieben: Hello, I known that qemu live migration

Re: [Qemu-devel] qemu + rbd block driver with cache=writeback, is live migration safe ?

2014-04-15 Thread Kevin Wolf
Am 12.04.2014 um 17:01 hat Alexandre DERUMIER geschrieben: Hello, I known that qemu live migration with disk with cache=writeback are not safe with storage like nfs,iscsi... Is it also true with rbd ? First of all, in order to avoid misunderstandings, let's be clear that there are three

[Qemu-devel] qemu + rbd block driver with cache=writeback, is live migration safe ?

2014-04-12 Thread Alexandre DERUMIER
Hello, I known that qemu live migration with disk with cache=writeback are not safe with storage like nfs,iscsi... Is it also true with rbd ? If yes, it is possible to disable manually writeback online with qmp ? Best Regards, Alexandre