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Re: Help with XFS in VMs on VMFS

To: Jan Perci <jperci@xxxxxxxxx>
Subject: Re: Help with XFS in VMs on VMFS
From: Stefan Ring <stefanrin@xxxxxxxxx>
Date: Thu, 28 Mar 2013 15:59:08 +0100
Cc: xfs@xxxxxxxxxxx
Delivered-to: xfs@xxxxxxxxxxx
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> This setup is not optimal and has risks, but I must work within some
> constraints.  There are a few things I can do to increase I/O performance,
> such as distributing the VMDK files used by each LV across the 6 VMFS
> datastores.  But can XFS be tuned as well?  Do stripe unit and stripe width
> help?  Thanks for your help.

I guess you should make the number of allocation groups equal to or a
multiple of the number of concatenated VMDK files (assuming they are
equally sized). Any more fiddling is probably not worth the effort.
But I'm sure you'll get lengthy answers from other people on the list

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