Ceph and KVM live migration

[Vladimir Bashkirtsev <vladimir@bashkirtsev.com>]

Dear all,

Currently I testing KVMs running on ceph and particularly testing recent 
cache feature. Performance is of course vastly improved but still have 
occasional KVM hold ups - not sure who is at blame ceph of KVM. But I 
will deal with it later. Right now I've got myself a question which I 
could not get answered myself: if I do live migration of KVM while there 
some uncommitted data in ceph cache will this cache be committed prior 
cut-over to another host? Reading through the list I've got an 
impression that it may be left uncommitted and thus it may cause data 
corruption. I just would like a simple confirmation if code which 
commits cache on cut-over to new host does exist and no data corruption 
due to RBD cache+live migration should happen.

Regards,
Vladimir