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? Thanks! -Brenton -------- Original Message -------- Subject: Re: [Iscsitarget-devel] iSCSI on Fedora Core 5 or custom Date: Tue, 18 Apr 2006 17:16:39 -0400 From: Ming Zhang <mingz@xxxxxxxxxxx> Reply-To: mingz@xxxxxxxxxxx To: Jos Vos <jos@xxxxxx> CC: iscsitarget-devel@xxxxxxxxxxxxxxxxxxxxx On Tue, 2006-04-18 at 22:50 +0200, Jos Vos wrote:
On Tue, Apr 18, 2006 at 04:21:29PM -0400, Ming Zhang wrote: > cluster like MSCS, cluster file system mostly depends on scsi command > like reserve/release, persistent reserve in/out. But IET does not really > implement them. So there will be chance that you fail the cluster and > corrupt u data. Does this also apply to the GFS and OCFS2 filesystems?
i am not 100% sure, but i remember that once a GFS guy told me that GFS will run ok even with persistent reserve in/out support. not sure about OCFS2. Ming ------------------------------------------------------- This SF.Net email is sponsored by xPML, a groundbreaking scripting language that extends applications into web and mobile media. Attend the live webcast and join the prime developer group breaking into this new coding territory! http://sel.as-us.falkag.net/sel?cmd=lnk&kid=110944&bid=241720&dat=121642 _______________________________________________ Iscsitarget-devel mailing list Iscsitarget-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/iscsitarget-devel -- Linux-cluster@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-cluster
