Re: Physical Disk goes offline when cluster node reboots

Darrek,

Just to confirm that we have the symptom right

- All groups are online on Node 1 (therefore all disks are online on Node 1)
- you reboot Node 2
- All disks on Node 1 go offline on Node 1 during reboot/Post of Node 2

Please confirm that this is what you are experiencing

and two questions:
Q: are the disks who go offline on Node 2, do they fail or do they go
offline ? (please specify, as there is a difference)
Q: Do you see any "reservation lost" messages/events in the system event log
?

rgds,
Edwin.




"Darrek" <Darrek.Kay1@xxxxxxxx> wrote in message
news:1166032177.312098.234640@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
I have a 2 node Windows 2003 SP1 EE cluster connected to an MSA1000 SAN
via integrated FC hub. My SAN is single-path since this is our Dev/QA
environment.

When I reboot any node in the cluster all physical disk resources go
offline while the rebooted server goes through POST. I get Delayed
Write Failed errors in the event log of the node that is still running.
Once the rebooted node is up and running the cluster returns to
normal.

I'm worried that our production cluster may exhibit the same issues
when it goes live even though it is built in a more robust fashion.

I'm open for suggestions.

The servers are HP DL145's, using Emulex FC2243 cards. If I simply
failover a cluster group everything works great.

Thanks.
-DK



.

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