Re: [ceph-users] rbd and exclusive lock feature

2015-09-22 Thread Jason Dillaman
> > when you enable the "exclusive-lock" feature, only one RBD client is able > > to modify the image while the lock is held. > > means > > rbd_lock_exclusive > > > However, that won't stop other RBD clients from *requesting* that > > maintenance operations be performed on the image (e.g.

Re: [ceph-users] rbd and exclusive lock feature

2015-09-22 Thread Shinobu Kinjo
time. -- Jason Dillaman - Original Message - > From: "Corin Langosch" <corin.lango...@netskin.com> > To: ceph-users@lists.ceph.com > Sent: Tuesday, September 22, 2015 8:11:38 AM > Subject: [ceph-users] rbd and exclusive lock feature > > Hi guys, >

[ceph-users] rbd and exclusive lock feature

2015-09-22 Thread Corin Langosch
Hi guys, when creating an rbd with feature "exclusive-lock" (and object-map, fast-diff, ..), do I have to pass any special arguments to qemu to activate it? How does this feature work with resize, snapshot creation, etc.? Form my work on ceph-ruby I know you have to call "rbd_open" and then

Re: [ceph-users] rbd and exclusive lock feature

2015-09-22 Thread Jason Dillaman
- > From: "Corin Langosch" <corin.lango...@netskin.com> > To: ceph-users@lists.ceph.com > Sent: Tuesday, September 22, 2015 8:11:38 AM > Subject: [ceph-users] rbd and exclusive lock feature > > Hi guys, > > when creating an rbd with feature "exclusi