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VIO on CX4 server problems
We are having disk issues with IBM VIO servers using CX4 disks(SATA). The symptom are that when we do veritas commands (specifically vxdisk list) it take for ever.... like 30-45 minutes for the response. One time, unknowingly we issued too many of the commands and it eventually panicked the box. We are digging deeper into the problem and I am wondering about the initiator type and the Failover mode.
Initiator Type: Clariion Open
Failover Mode: 1
Can anyone comment on these? Thanx in advance.
Maduro
Initiator Type: Clariion Open
Failover Mode: 1
Can anyone comment on these? Thanx in advance.
Maduro
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Posted October 15th, 2009 11:00
vxdisk list communicates with the kernel devices to get the list of disk drives/luns available to the server. If that takes a long time to finish the list, then I'd look in to the following things first
->Check the output of powerpath & see if there
->Check for filesystems issues
->Check the device messages, dmesg, log messages
->Check for Vertias log messges350
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Posted October 16th, 2009 11:00
We are using MPIO.350
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Posted October 16th, 2009 12:00
We were told to use Failover Mode 3 in our VIO environment. Told it handles NDU Upgrades better. We however don't have veritas in our environment and are using Powerpath as well. So not sure if that mode takes those things into account or not.350
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Posted October 19th, 2009 07:00
Hey hersh. Thanx for the reply. Can you tell me who you mean by "we were told"? Was it EMC support, was the suggested Failover Mode in any form of a document you could share?
maduro350
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Posted October 19th, 2009 08:00
On PowerLink look for Knowledgebase article emc99467 - this lists the different settings for all the operating systems. See the attached PDF,
glen350
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Posted October 26th, 2009 10:00
Can I say Kelleg told us?Thanks for the doc, it is nice having everything consolidated into one.
In case you are still curious, I believe it was our local support team that did the digging for us.
Allen Ward
6 Operator
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2124 Posts
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Posted October 15th, 2009 11:00
We have several VIO server running on both CLARiiON (CX3 & CX4) and Symmetrix (DMX3) using PowerPath with no problems. We configure VIO identical to AIX and everything just 'works'.