Re: [ceph-users] shared images

2013-05-13 Thread Dan Mick
On 05/13/2013 09:55 AM, Gregory Farnum wrote: On Mon, May 13, 2013 at 9:10 AM, Harald Rößler wrote: Hi Together is there a description of how a shared image works in detail? Can such an image can be used for a shared file system on two virtual machine (KVM) to mount. In my case, write on on

Re: [ceph-users] shared images

2013-05-13 Thread Jens Kristian Søgaard
Hi, Thanks, and sorry maybe I did not explain clearly what I mean or. When I' mounting a rbd image on two KVM machines, then if I am writing a file in one system the other system does not recognize the change of the file system. I thought there is some magic in librbd which give the OS the Th

Re: [ceph-users] shared images

2013-05-13 Thread Gregory Farnum
On Mon, May 13, 2013 at 11:35 AM, Harald Rößler wrote: > On Mon, 2013-05-13 at 18:55 +0200, Gregory Farnum wrote: >> On Mon, May 13, 2013 at 9:10 AM, Harald Rößler >> wrote: >> > >> > Hi Together >> > >> > is there a description of how a shared image works in detail? Can such >> > an image can b

Re: [ceph-users] shared images

2013-05-13 Thread Harald Rößler
On Mon, 2013-05-13 at 18:55 +0200, Gregory Farnum wrote: > On Mon, May 13, 2013 at 9:10 AM, Harald Rößler wrote: > > > > Hi Together > > > > is there a description of how a shared image works in detail? Can such > > an image can be used for a shared file system on two virtual machine > > (KVM) to

Re: [ceph-users] shared images

2013-05-13 Thread Gregory Farnum
On Mon, May 13, 2013 at 9:10 AM, Harald Rößler wrote: > > Hi Together > > is there a description of how a shared image works in detail? Can such > an image can be used for a shared file system on two virtual machine > (KVM) to mount. In my case, write on one machine and read only on the > other KV

[ceph-users] shared images

2013-05-13 Thread Harald Rößler
Hi Together is there a description of how a shared image works in detail? Can such an image can be used for a shared file system on two virtual machine (KVM) to mount. In my case, write on one machine and read only on the other KVM.Are the changes are visible on the read only KVM? Thanks With Re