VM disk SCSI connection resets

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VM disk SCSI connection resets

Veeam Logoby Drumcode2003 » Mon Jan 31, 2011 3:59 pm

Hi,

I got lots of mails after vmotion moves the machines from one host to another.
Any hints for me what this means?
I don't believe that our storage runs at limit ...

thx for help.
Drumcode2003
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Re: VM disk SCSI connection resets

Veeam Logoby Vitaliy S. » Tue Feb 01, 2011 9:57 am

Hello Sepp,

Do you have the same number of SCSI aborts if you look at vSphere Client|Performance tab? Have you had a chance to check out history information on all aborts via Veeam Monitor? Do you see any other datastore I/O counters maxing out while vMotion takes place?

Thanks!
Vitaliy S.
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Re: VM disk SCSI connection resets

Veeam Logoby Drumcode2003 » Wed Feb 02, 2011 1:37 pm

I can only see that after vmotion moves the machine to another host some performance counters changed values. (e.g. virtual disc latency, disc usage, datastore latency, RAM)
There is nothing concerning SCSI abots inside tasks & events tab.
the only messages I got were: SCSI connection resets & SCSI connection failures.
Drumcode2003
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Re: VM disk SCSI connection resets

Veeam Logoby Vitaliy S. » Wed Feb 02, 2011 3:14 pm

Sepp, if you recieve those messages within both Veeam Monitor and vSphere Client, then you should look more closely at your datastore triggering those alarms, so you could mitigate the risk of possible hardware failures.

By the way, have you looked through our Veeam Monitor alarm KB regarding SCSI connection resets and failures?

Drumcode2003 wrote:There is nothing concerning SCSI abots inside tasks & events tab.

If you're talking about vSphere Client, then you should be looking at Host -> Performance Tab -> Disk- > Realtime counters
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Re: VM disk SCSI connection resets

Veeam Logoby cjscol » Thu Jun 16, 2011 2:23 pm

Did you ever find a solution to this? I am also seeing these messages within Veeam Monitor when performing a vMotion.
Also see "VM generic warning" on various VMs while performing a vMotion.
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Re: VM disk SCSI connection resets

Veeam Logoby Vitaliy S. » Thu Jun 16, 2011 2:44 pm

Calvin, could you please tell me how many SCSI connection resets you have in the vSphere Client performance tab?

As regards the VM generic warning message, then please take a look at existing topic and continue posting there if needed: VM generic
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