[Linux-cluster] [Fwd: Re: [Iscsitarget-devel] iSCSI on Fedora Core 5 or custom]

[David Teigland]

On Tue, Apr 18, 2006 at 04:36:54PM -0500, Brenton Rothchild wrote:
> Hello!
> 
> There has been some minor discussion on the iscsitarget-devel list
> regarding the fact that the current iscsitarget code doesn't fully
> implement the SCSI commands Release and Reserve, nor does it implement
> persistent reserve in/out.
> 
> It was also mentioned that some cluster software, such as
> MSCS (Microsoft Cluster), will possibly corrupt data.
> 
> It was then asked if GFS would depend on these unimplemented
> SCSI commands, and the response from Ming Zhang (below) wasn't 100%
> sure.
> 
> So, would an iSCSI target lacking Release, Reserve, and persistent
> reserve in/out cause problems with GFS?

GFS requires the clustering software to do i/o fencing and persistent
reservations would be a good way to do fencing.

Dave