[lustre-discuss] Target names changing when mounting

Ben Evans bevans at cray.com
Mon Aug 3 05:49:43 PDT 2015

The only issue with it is that you mount with a name like /dev/mapper/mdt-1 and all errors in the logs, etc. show up as /dev/dm-04.

Make sure you've got a mapping between the two somewhere other than on the machine (I'd include SCSI wwns in there as well, as they can't lie)

-Ben Evans

-----Original Message-----
From: lustre-discuss [mailto:lustre-discuss-bounces at lists.lustre.org] On Behalf Of Mohr Jr, Richard Frank (Rick Mohr)
Sent: Friday, July 31, 2015 5:06 PM
To: Andrus, Brian Contractor
Cc: Drokin, Oleg; lustre-discuss at lists.lustre.org
Subject: Re: [lustre-discuss] Target names changing when mounting

> On Jul 31, 2015, at 4:51 PM, Andrus, Brian Contractor <bdandrus at nps.edu> wrote:
> I use multipathing and the labels actually work well. They are merely links to the dm-xx device.

Interesting.  The Lustre manual has a section on mounting by label, and it claims this should’t be used in multi-path environments.  Could that information be outdated?

Rick Mohr
Senior HPC System Administrator
National Institute for Computational Sciences http://www.nics.tennessee.edu

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