[Gluster-users] Using TSM to back-up glusterfs
phaley at MIT.EDU
Tue Jun 28 14:12:57 UTC 2011
Hi Anand Babu Periasamy,
Yes, I can read
directly from the backend disk (specifically: logged onto
machine containing the disk and did a more).
Furthermore I can read (i.e. "more") that file other nodes
in our cluster going through gluster.
Following up on another lead from this list, the TSM software
is not using direct i/o (O_DIRECT).
> On Mon, Jun 27, 2011 at 12:08 PM, Pat Haley <phaley at mit.edu
> <mailto:phaley at mit.edu>> wrote:
> We have been trying back-up a glusterfs (v3.1.4) area using
> the Tivoli TSM software to an off-site area. The back-up
> keeps failing with the following typical error messages
> 06/14/2011 22:22:58 ANS1587W I/O error reading file attributes for:
> <http://coast_den2.in>. errno = 22, Invalid argument
> 06/14/2011 22:22:59 ANS4007E Error processing
> <http://coast_den2.in>': access to the object is denied
> We originally thought the problem was bad meta-pointer files,
> but we still experience the failures after deleting all meta-pointer
> Has anyone else experienced/solved this problem?
> Pat Haley Email: phaley at mit.edu
> <mailto:phaley at mit.edu>
> Center for Ocean Engineering Phone: (617) 253-6824
> Dept. of Mechanical Engineering Fax: (617) 253-8125
> MIT, Room 5-222B http://web.mit.edu/phaley/www/
> 77 Massachusetts Avenue
> Cambridge, MA 02139-4301
> Gluster-users mailing list
> Gluster-users at gluster.org <mailto:Gluster-users at gluster.org>
> Hi Pat, Let me get some one from the engineering team to coordinate with
> you. For now, you can check this:
> This file must exist on one of the backend disks. See if you can
> directly read from the backend disks. If it is not a bad backend disk,
> then it is a GlusterFS issue.
> If you provide us remote access via reverse-ssh / screen or webex, we
> can quickly narrow down. We don't have a TSM environment in our labs.
> You can help us validate compatibility.
> Also I am not sure if TSM allows scripting. If we can make TSM tools use
> GlusterFS 3.2 marker APIs, then you can achieve continuous backup
> functionality (backup data as and when it changes, without crawling the
> name space). It will significantly improve your backup performance (no
> more backup windows). Marker APIs can even be invoked via shell
> scripting using attr tools.
> Anand Babu Periasamy
> Blog [http://www.unlocksmith.org <http://www.unlocksmith.org/>]
> Imagination is more important than knowledge --Albert Einstein
Pat Haley Email: phaley at mit.edu
Center for Ocean Engineering Phone: (617) 253-6824
Dept. of Mechanical Engineering Fax: (617) 253-8125
MIT, Room 5-222B http://web.mit.edu/phaley/www/
77 Massachusetts Avenue
Cambridge, MA 02139-4301
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