RE: MPIO with Persistent Reserve Out/In
Ming Zhang <[email protected]>
| Newsgroups | gmane.ietf.ips |
|---|---|
| Message-ID | <[email protected]> |
On Wed, 2006-12-20 at 14:39 -0800, Santosh Rao wrote: > > > On Wed, 20 Dec 2006, Ming Zhang wrote: > > > On Wed, 2006-12-20 at 11:36 -0500, [email protected] wrote: > > > > I can not find this from original rfc or the new guide draft about how > > > > MPIO work with Persistent Reserve Out/In or old Reserve/Release. > > > > > > > > In iSCSI, a session is a I_T nexus. With MPIO, then between one > > > > initiator and one target will have multiple I_T nexus. If initiator > > > > setup a reservation via 1st session, can it send out commands like > > > write > > > > via 2nd session? Intuitively, I think it should be able to. > > > > > > No - if you want that behavior, use multiple TCP connections in a single > > > iSCSI session. > > Or, use persistent reservations instead of SCSI-2 reservations. PR use a reservation key i thought it is still I_T nexus based? Then still tight to session? > > > > > ok. > > > > > > > > > But from SPC, reservation will base on I_T nexus so 2 sessions are 2 > > > > different I_T nexus. > > > > > > That is how iSCSI behaves - no change to SPC. > > > > yes, i meant with 2 I_T nexus, then base on SPC we can not do it in > > MPIO. > > > > But from application point of view, why can not do it with MPIO? > > > > > > > > > > Thanks, > > > --David > > > ---------------------------------------------------- > > > David L. Black, Senior Technologist > > > EMC Corporation, 176 South St., Hopkinton, MA 01748 > > > +1 (508) 293-7953 FAX: +1 (508) 293-7786 > > > [email protected] Mobile: +1 (978) 394-7754 > > > ---------------------------------------------------- > > > > > > _______________________________________________ > > Ips mailing list > > [email protected] > > https://www1.ietf.org/mailman/listinfo/ips > > > _______________________________________________ Ips mailing list [email protected] https://www1.ietf.org/mailman/listinfo/ips