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2321
SCSI3 persistent reservation for SUN QFS
Hi
I have a question about SCSI3 persistent reservation volume flag be set on Symmetrix disks,
Let me explain ma case, i have 3 Solaris Server running Solaris 10 Operating System, I have also 10 DMX 4 disks share among them. The customer wants to use Sun StorageTek QFS, i found a primus emc87610 it talks about the SCSI3 persistent reservation volume flag be set on Symmetrix disks
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The SCSI3 persistent reservation bit is required for Sun Cluster 3.0 and above, VERITAS Database Edition/Active Cluster for Oracle 9I RAC 3.5. and HPQ TruCluster 5.x.
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I need to know if i really need to set the SCSI3 persistent reservation volume flag for Sun Storage Tek QFS Disks, remember i wont use Sun Cluster, I wont use ASM,Oracle Rac they will use only QFS.
Best Regards
mcowger1
5 Posts
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April 24th, 2010 13:00
We regularly use QFS without the SCSI3 PGR enabled.
HankD1
20 Posts
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April 21st, 2010 15:00
In past experience the only time I needed SCSI3 was on clusters with file systems active on multiple systems. i.e. Veritas Clustered File System and ASM. Also, for those systems that required it had a test you could run to make sure the storage was configured correctly.
paulo3
202 Posts
0
April 22nd, 2010 02:00
Hi!
I checked this request with the elab navigator. (powerlink -> interoperability tools -> elab interopability)
It says that the Sun Solaris 10 setup basically requires the C D bits on the directors.
Unfortunately i dont find any information about QFS in the elab navigator.
SCSI3 reservation is need whan one nodes want to reserve one device (for example: quorum device in cluster) and writes
the scsi3 reserve key to the disk. The other node or nodes first check the quorum disk scsi reserve area, if it is reserved, they cannot
use the shared disk.
I you use Sun Cluster SCSI3 reserve bit is required.
I dont find information in SAM QFS doc about wheter it is use SCSI3 reserve. I think it isnt use.
But to make sure, please ask your local Sun support, wheter SAM QFS is use scsi reserve on the storage or not. (I guess it isnt use)
ayakovenko
14 Posts
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April 22nd, 2010 05:00
Also note that SCSI3 reservation is applied not only to directors but to each device individually.
LGaDncsXW012462
8 Posts
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June 19th, 2011 07:00
HI,
I am having problem removing Powerpath DEAD devices from solaris cluster host running QFS.
Can you share with me your experience on QFS? I really ran out of idea, your help is highly appreciated.
thank you, have a nice day.
Tham