Messages in this thread | | | Subject | Re: Linux Cluster using shared scsi | Date | Tue, 01 May 2001 10:45:00 -0400 | From | James Bottomley <> |
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Chris.Roets@compaq.com said: > So, will Linux ever support the scsi reservation mechanism as standard?
That's not within my gift. I can merely write the code that corrects the behaviour. I can't force anyone else to accept it.
Chris.Roets@compaq.com said: > Isn't there a standard that says if you scsi reserve a disk, no one > else should be able to access this disk, or is this a "steeleye/ > Compaq" standard.
Use of reservations is laid out in the SCSI-2 and SCSI-3 standards (which can be downloaded from the T10 site www.t10.org) which are international in scope. I think the implementation issues come because the reservations part is really only relevant to a multi-initiator clustered environment which isn't an every day configuration for most Linux users. Obviously, as Linux moves into the SAN arena this type of configuration will become a lot more common, at which time the various problems associated with multiple initiators should rise in prominence.
James
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