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Re: [dm-devel] FS directly on top of dm devices?



That is what we figured. Thanks for the reply.


Romanowski, John (OFT) wrote:
Partitioning and LVM is optional, depends upon what you want to accomplish.
Sometimes I make the file system directly on the multipathed device, as in
mkfs /dev/mapper/mpatha

Other than having more paths to the LUN it's no different then making a file system on an unpartitioned scsi device as in
mkfs /dev/sda

-----Original Message-----
From: dm-devel-bounces redhat com [mailto:dm-devel-bounces redhat com]
On Behalf Of Scott Dungan
Sent: Thursday, April 16, 2009 7:52 PM
To: dm-devel redhat com
Subject: [dm-devel] FS directly on top of dm devices?

We recently had an engineer from a large storage vendor suggest that we
make our file systems directly onto the multipathed devices without
first creating underlying partitions or using LVM.  Having not run with
this method in production before, we would like to gather as much
information as possible first. Initial searches for documentation on
this method has produced few results, short of a Suse/Novell document
from 2005 under section 4:

http://support.novell.com/techcenter/sdb/en/2005/04/sles_multipathing.h
tml

Does anyone have any experience with this or can point us to more
documentation. thoughts or recommendations?

Thanks,

--

Scott A Dungan


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Scott A Dungan
Systems Administrator
GPS Division
California Institute of Technology
Phone: (626) 395-3170
Fax:   (626) 585-1917


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