[CentOS] Dell Equallogic
Ray Van Dolson
rayvd at bludgeon.org
Wed Oct 14 19:32:59 UTC 2009
On Wed, Oct 14, 2009 at 11:22:36AM -0700, nate wrote:
> John R Pierce wrote:
> > if you have a SAN that supports logical volumes that have snapshot and
> > grow and such, I'm not sure why you'd bother with LVM on top of that, it
> > would just further obfuscate things.
> Makes life easier for me when using MPIO, auto detection of the
> volume no matter what path it shows up with. And I can slap an
> easily readable "label" on the volume so I know what it is.
Couldn't you accomplish this with the "alias" parameter in your
multipath.conf file per LUN? We have this set up here so there's a
/dev/mpath/<friendly_name> based on the WWID.
(Not that I have any problem with using LVM as you are...)
> Sample log from one of my oracle snapshot procedures:
> And it allows me to better control growth with thin provisioning,
> some apps are not thin provisioning friendly so I restrict them
> with LVM, knowing that I can easily do an online resize at any
> time without touching the array.
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