[Lustre-discuss] EXTERNAL: Re: Unable to write to the Lustre File System as any user except root

[Barberi, Carl E]

We found the issue.  The ability to write to the Lustre FS was dependent on the synchronization of the user IDs between the MDS and the clients, which I assume LDAP/NIS would take care of (as you guys mentioned).  Thank you for your help.  I appreciate it.

Carl

From: Cliff White [mailto:cliffw at whamcloud.com]
Sent: Wednesday, October 12, 2011 11:48 AM
To: Barberi, Carl E
Cc: Kilian CAVALOTTI; lustre-discuss at lists.lustre.org
Subject: Re: [Lustre-discuss] EXTERNAL: Re: Unable to write to the Lustre File System as any user except root

If you are not using LDAP, etc, then the user's information must be in the MDS's password files.
Users must be known to the MDS.
cliffw

On Wed, Oct 12, 2011 at 6:37 AM, Barberi, Carl E <carl.e.barberi at lmco.com<mailto:carl.e.barberi at lmco.com>> wrote:
Thank you Kilian.  However, I was just able to perform Lustre operations as another user.  So now it seems that only one of my users exhibits the problem I saw.  I don't have NIS or LDAP configured on this MDS, but I have another Lustre FS setup elsewhere that does not exhibit any of the problems I've seen.  Any thoughts as to why now only one user cannot access the Lustre FS?

Thanks,
Carl

-----Original Message-----
From: Kilian CAVALOTTI [mailto:kilian.cavalotti.work at gmail.com<mailto:kilian.cavalotti.work at gmail.com>]
Sent: Wednesday, October 12, 2011 2:24 AM
To: Barberi, Carl E
Cc: lustre-discuss at lists.lustre.org<mailto:lustre-discuss at lists.lustre.org>
Subject: EXTERNAL: Re: [Lustre-discuss] Unable to write to the Lustre File System as any user except root

Hi Carl,

On Tue, Oct 11, 2011 at 9:07 PM, Barberi, Carl E
<carl.e.barberi at lmco.com<mailto:carl.e.barberi at lmco.com>> wrote:
> " LustreError: 11-0: an error occurred while communicating with
> 192.168.10.2 at o2ib.  The mds_getxattr operation failed with -13."

You likely miss authentication information on your MDS about the user
you're trying to write as.
Just configure NIS, LDAP or whatever you're using on your MDS, and you
should be good to go.

Cheers,
--
Kilian
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--
cliffw
Support Guy
WhamCloud, Inc.
www.whamcloud.com<http://www.whamcloud.com>


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