On Dienstag, 17. Januar 2012 Stan Hoeppner wrote:
> So to be clear, your issue with the above isn't with my partition
> alignment math WRT the OP's P2000 array, but is with using XFS stripe
> alignment in general, correct?
Yes. I just wanted to document this as people often expand RAIDs and
forget to apply the changes to stripe width.
> There is one really simple way around this issue you describe: don't
> add drives to an existing array. Simply create another array with
> new disks, create a new aligned XFS on the array, and mount the
> filesystem in an appropriate location. There is no 11th Commandment
> stating one must have a single massive XFS atop all of one's disks.
> There is little to no application software today that can't be
> configured to store its data files across multiple directories. So
> there's no need to box oneself into the corner you describe above.
It's a management burden to do that. I've learned that systems usually
are strictly structured in their configuration, so it's often better to
extend a RAID and to keep the config, as this is cheaper in the end. At
least for the salaries of good admins here in Europe ;-)
mit freundlichen Grüssen,
Michael Monnerie, Ing. BSc
it-management Internet Services: Protéger
http://proteger.at [gesprochen: Prot-e-schee]
Tel: +43 660 / 415 6531
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