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

[Scott Dungan]

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 at redhat.com [mailto:dm-devel-bounces at redhat.com]
>> On Behalf Of Scott Dungan
>> Sent: Thursday, April 16, 2009 7:52 PM
>> To: dm-devel at 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