Re: [Users] which file system for shared disk?

2013-07-11 Thread Piotr Szubiakowski
The way that oVirt manage storage domains accessed via FC is very smart. There is separate logical volume for each virtual disk. But I think that logical volume at the same time could be touched only by one host. Is it possible that two host access read/write the same logical volume and there

Re: [Users] which file system for shared disk?

2013-07-11 Thread Itamar Heim
On 07/11/2013 11:52 AM, Piotr Szubiakowski wrote: The way that oVirt manage storage domains accessed via FC is very smart. There is separate logical volume for each virtual disk. But I think that logical volume at the same time could be touched only by one host. Is it possible that two host

Re: [Users] which file system for shared disk?

2013-07-11 Thread Yuriy Demchenko
On 07/11/2013 12:52 PM, Piotr Szubiakowski wrote: The way that oVirt manage storage domains accessed via FC is very smart. There is separate logical volume for each virtual disk. But I think that logical volume at the same time could be touched only by one host. Is it possible that two host

Re: [Users] which file system for shared disk?

2013-07-11 Thread Piotr Szubiakowski
W dniu 11.07.2013 12:02, Itamar Heim pisze: On 07/11/2013 11:52 AM, Piotr Szubiakowski wrote: The way that oVirt manage storage domains accessed via FC is very smart. There is separate logical volume for each virtual disk. But I think that logical volume at the same time could be touched

Re: [Users] which file system for shared disk?

2013-07-11 Thread Piotr Szubiakowski
On 07/11/2013 12:52 PM, Piotr Szubiakowski wrote: The way that oVirt manage storage domains accessed via FC is very smart. There is separate logical volume for each virtual disk. But I think that logical volume at the same time could be touched only by one host. Is it possible that two

Re: [Users] which file system for shared disk?

2013-07-11 Thread Yuriy Demchenko
On 07/11/2013 02:45 PM, Piotr Szubiakowski wrote: On 07/11/2013 12:52 PM, Piotr Szubiakowski wrote: The way that oVirt manage storage domains accessed via FC is very smart. There is separate logical volume for each virtual disk. But I think that logical volume at the same time could be

Re: [Users] which file system for shared disk?

2013-07-11 Thread Piotr Szubiakowski
On 07/11/2013 02:45 PM, Piotr Szubiakowski wrote: On 07/11/2013 12:52 PM, Piotr Szubiakowski wrote: The way that oVirt manage storage domains accessed via FC is very smart. There is separate logical volume for each virtual disk. But I think that logical volume at the same time could be

[Users] which file system for shared disk?

2013-07-10 Thread Piotr Szubiakowski
Hi, we are developing an application where would be great if multiple host could have access to the same disk. I think that we can use features like shared disk or direct LUN to attach the same storage to multiple VM's. However to provide concurrent access to the resource, there should be a

Re: [Users] which file system for shared disk?

2013-07-10 Thread Chris Smith
Why not use gluster with xfs on the storage bricks? http://www.gluster.org/ On Wed, Jul 10, 2013 at 7:15 AM, Piotr Szubiakowski piotr.szubiakow...@nask.pl wrote: Hi, we are developing an application where would be great if multiple host could have access to the same disk. I think that we can

Re: [Users] which file system for shared disk?

2013-07-10 Thread Eduardo Ramos
Hi Piotr! I've used OCFS2 out of oVirt, so I can't tell you specifically about VM environment, but I suggest you use OCFS2 in place of GFS2. It is simpler to implement, so less components to configure and it care about fencing for you. On 07/10/2013 08:15 AM, Piotr Szubiakowski wrote: Hi,

Re: [Users] which file system for shared disk?

2013-07-10 Thread Piotr Szubiakowski
Hi, gluster is good in scenario when we have many hosts with own storage and we aggregate these pieces it into one shared storage. In this situation data is transferred via Ethernet ore Infiniband. In our scenario we have centralized storage accedes via Fibre Channel. In this situation it

Re: [Users] which file system for shared disk?

2013-07-10 Thread Piotr Szubiakowski
Hi Eduardo, yes fencing method used in OCFS2 is probably better for vitalized environments. Thanks for advice! Many thanks, Piotr W dniu 10.07.2013 13:32, Eduardo Ramos pisze: Hi Piotr! I've used OCFS2 out of oVirt, so I can't tell you specifically about VM environment, but I suggest you

Re: [Users] which file system for shared disk?

2013-07-10 Thread Subhendu Ghosh
On 07/10/2013 07:53 AM, Piotr Szubiakowski wrote: Hi, gluster is good in scenario when we have many hosts with own storage and we aggregate these pieces it into one shared storage. In this situation data is transferred via Ethernet ore Infiniband. In our scenario we have centralized storage

Re: [Users] which file system for shared disk?

2013-07-10 Thread Piotr Szubiakowski
On 07/10/2013 07:53 AM, Piotr Szubiakowski wrote: Hi, gluster is good in scenario when we have many hosts with own storage and we aggregate these pieces it into one shared storage. In this situation data is transferred via Ethernet ore Infiniband. In our scenario we have centralized storage

Re: [Users] which file system for shared disk?

2013-07-10 Thread Itamar Heim
On 07/10/2013 05:33 PM, Piotr Szubiakowski wrote: The way that oVirt manage storage domains accessed via FC is very smart. There is separate logical volume for each virtual disk. But I think that logical volume at the same time could be touched only by one host. Is it possible that two host