Re: [ceph-users] Double-mounting of RBD

2014-12-18 Thread Olivier DELHOMME
Hello, I have a somewhat interesting scenario. I have an RBD of 17TB formatted using XFS. I would like it accessible from two different hosts, one mapped/mounted read-only, and one mapped/mounted as read-write. Both are shared using Samba 4.x. One Samba server gives read-only access to the

Re: [ceph-users] Double-mounting of RBD

2014-12-18 Thread John Spray
On Wed, Dec 17, 2014 at 10:31 PM, McNamara, Bradley bradley.mcnam...@seattle.gov wrote: However, when testing this, when changes are made to the read-write Samba server the changes don’t seem to be seen by the read-only Samba server. Is there some file system caching going on that will

[ceph-users] Double-mounting of RBD

2014-12-17 Thread McNamara, Bradley
I have a somewhat interesting scenario. I have an RBD of 17TB formatted using XFS. I would like it accessible from two different hosts, one mapped/mounted read-only, and one mapped/mounted as read-write. Both are shared using Samba 4.x. One Samba server gives read-only access to the world

Re: [ceph-users] Double-mounting of RBD

2014-12-17 Thread Gregory Farnum
On Wed, Dec 17, 2014 at 2:31 PM, McNamara, Bradley bradley.mcnam...@seattle.gov wrote: I have a somewhat interesting scenario. I have an RBD of 17TB formatted using XFS. I would like it accessible from two different hosts, one mapped/mounted read-only, and one mapped/mounted as read-write.

Re: [ceph-users] Double-mounting of RBD

2014-12-17 Thread Josh Durgin
On 12/17/2014 03:49 PM, Gregory Farnum wrote: On Wed, Dec 17, 2014 at 2:31 PM, McNamara, Bradley bradley.mcnam...@seattle.gov wrote: I have a somewhat interesting scenario. I have an RBD of 17TB formatted using XFS. I would like it accessible from two different hosts, one mapped/mounted

Re: [ceph-users] Double-mounting of RBD

2014-12-17 Thread Jake Young
On Wednesday, December 17, 2014, Josh Durgin josh.dur...@inktank.com wrote: On 12/17/2014 03:49 PM, Gregory Farnum wrote: On Wed, Dec 17, 2014 at 2:31 PM, McNamara, Bradley bradley.mcnam...@seattle.gov wrote: I have a somewhat interesting scenario. I have an RBD of 17TB formatted using