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List:       lustre-discuss
Subject:    Re: [lustre-discuss] Mount lustre client with MDS/MGS backup
From:       "Mohr Jr, Richard Frank (Rick Mohr)" <rmohr () utk ! edu>
Date:       2016-08-31 13:32:29
Message-ID: 0F060255-4661-45A9-995D-35F172122B69 () utk ! edu
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> On Aug 31, 2016, at 8:12 AM, Pardo Diaz, Alfonso <alfonso.pardo@ciemat.es> wrote:
> 
> I mount my clients: mount -t lustre mds1@o2ib:mds2@o2ib:/fs /mnt/fs
> 
> 1) When both MDS are OK I can mount without problems
> 2) If the MDS1 is down and my clients have lustre mounted, they use MDS2 without \
> problems 3) If the MDS1 is down and I try to mount a new client, It can't mount \
> lustre with the next error: 
> 
<snip>
> arg[4] = 192.168.8.9@o2ib:192.168.8.9@o2ib:/fs

The client is resolving both hostnames (mds1 and mds2) to the same IP address.  I am \
guessing that this corresponds to mds1, so when it is down, there is no second host \
for the client to try.  Try specifying IP addresses instead of hostnames and see if \
that make a difference.

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

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