zfs discuss - Jul 2007 - Does iSCSI target support SCSI-3 PGR reservation ?

Does opensolaris iSCSI target support SCSI-3 PGR reservation ? 
My goal is to use the iSCSI LUN created by [1] or [2] as a quorum device for a
3-node suncluster.

[1] zfs set shareiscsi=on <storage-pool/zfs volume name>
[2] iscsitadm create target .....


Thanks,
-- leon
 
 
This message posted from opensolaris.org

Leon Koll wrote:
> Does opensolaris iSCSI target support SCSI-3 PGR reservation ? 
As far as I can tell, and it is part of the iSCSI RFC.  Source code is at
http://src.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/cmd/iscsi/iscsitgtd/t10_sbc.c

more info at http://www.opensolaris.org/os/project/iscsitgt/
> My goal is to use the iSCSI LUN created by [1] or [2] as a quorum device
for a 3-node suncluster.
That should work, but it is easier to use a quorum server.
> [1] zfs set shareiscsi=on <storage-pool/zfs volume name>
> [2] iscsitadm create target .....
Also checkout the new Open HA Cluster community
http://www.opensolaris.org/os/community/ha-clusters/
which is where such things are likely to be discussed.
  -- richard

A quick look through the source would seem to indicate that the PERSISTENT
RESERVE commands are not supported by the Solaris ISCSI target at all.

http://cvs.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/cmd/iscsi/iscsitgtd/t10_spc.c
 
 
This message posted from opensolaris.org

> A quick look through the source would seem to indicate that the  
> PERSISTENT RESERVE commands are not supported by the Solaris ISCSI  
> target at all.
Correct. There is an RFE outstanding for iSCSI Target to implement  
PGR for both raw SCSI-3 devices, and block devices.

http://bugs.opensolaris.org/view_bug.do?bug_id=6415440
>
> http://cvs.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/cmd/ 
> iscsi/iscsitgtd/t10_spc.c
>
>
> This message posted from opensolaris.org
> _______________________________________________
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> zfs-discuss at opensolaris.org
> http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Jim Dunham
Solaris, Storage Software Group

Sun Microsystems, Inc.
1617 Southwood Drive
Nashua, NH 03063
Email: James.Dunham at Sun.COM
http://blogs.sun.com/avs

Hi,
         I too am waiting for this to ship so I can build a Proof of
concept / demo cluster.  Is there any other feature or enhancement
I''ll have to wait for before pointing my cluster nodes at a Solaris
ISCSI target as global storage?  Has anyone been actively developing
toward and testing this mode of deployment, or is PGR needed for other
things too?

thx

jake




On 7/27/07, Jim Dunham <James.Dunham at sun.com>
wrote:
>
> > A quick look through the source would seem to indicate that the
> > PERSISTENT RESERVE commands are not supported by the Solaris ISCSI
> > target at all.
>
> Correct. There is an RFE outstanding for iSCSI Target to implement
> PGR for both raw SCSI-3 devices, and block devices.
>
> http://bugs.opensolaris.org/view_bug.do?bug_id=6415440
>
> >
> > http://cvs.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/cmd/
> > iscsi/iscsitgtd/t10_spc.c
> >
> >
> > This message posted from opensolaris.org
> > _______________________________________________
> > zfs-discuss mailing list
> > zfs-discuss at opensolaris.org
> > http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
>
> Jim Dunham
> Solaris, Storage Software Group
>
> Sun Microsystems, Inc.
> 1617 Southwood Drive
> Nashua, NH 03063
> Email: James.Dunham at Sun.COM
> http://blogs.sun.com/avs
>
>
>
> _______________________________________________
> zfs-discuss mailing list
> zfs-discuss at opensolaris.org
> http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
>