-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Jos Vos wrote: > Hi, > > The vendor of a cabinet that we have - via two separate SCSI channels - > connected to two cluster nodes running RH CS and GFS (RHEL4 U4) responds > to a problem we have as follows: > > The GFS filesystem require RAID system to support special > SCSI commands (DLOCK/DMEP). > > Am I right that this is not true and that only older versions > of GFS relied on these SCSI commands? > > Thanks, > Hi Jos, Afaik, yes - these are the ancient history of clustersuite. Take a look at the paper "Symmetric Cluster Architecture". This talks about the evolution of locking in clustersuite, from the original DLOCK/DMEP support, to a DLOCK/DMEP simulator (this went on to become GULM), and finally to the distributed lock manager (DLM). http://people.redhat.com/~teigland/sca.pdf Although the paper is a couple of years old now, it covers this area quite thoroughly. Kind regards, Bryn. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.5 (GNU/Linux) Comment: Using GnuPG with Fedora - http://enigmail.mozdev.org iD8DBQFFtKh86YSQoMYUY94RAq1eAJ9Vj8aYXmBYFAiUqh8zILKeHGcKfgCffUth vFtXKPxWsGGvrpqewXaO5ck= =Xv8L -----END PGP SIGNATURE----- -- Linux-cluster mailing list Linux-cluster@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-cluster
