Hello I''m do a schema of mail service so I have only one question: Can Lustre provide me full automatic failover solution? I plan to use for storage the standard servers with 1GE links. I need automatic solution as possible. E.g. RAID5 functionality, when one or more storage node down user data still accessible. So if I have 100TB of disk storage I can serve 50TB of data in failover mode with no downtime. Can you provide me more information? -- Vadym Kurylovych Systems Architect Ukrainian Drupal Company http://www.internetdevels.com/ -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.lustre.org/pipermail/lustre-discuss/attachments/20091012/3a4eec6d/attachment-0001.html -------------- next part -------------- A non-text attachment was scrubbed... Name: mail.png Type: image/png Size: 28801 bytes Desc: not available Url : http://lists.lustre.org/pipermail/lustre-discuss/attachments/20091012/3a4eec6d/attachment-0001.png
Am Montag, 12. Oktober 2009 15:54:04 schrieb Vadym:> Hello > I''m do a schema of mail service so I have only one question: > Can Lustre provide me full automatic failover solution?No. See the lustre manual for this. You need a cluster solution for this. The manual is *hopelessly* outdate at this point. Do NOT user heartbeat any more. User pacemaker as the cluster manager. See www.clusterlabs.org. When I find some time I want to write a HOWTO about setting up a lustre clsuter with pacemaker and OpenAIS.> I plan to use for storage the standard servers with 1GE links. I need > automatic solution as possible. > E.g. RAID5 functionality, when one or more storage node down user data > still accessible. So if I have 100TB of disk storage I can serve 50TB of > data in failover mode with no downtime. Can you provide me more > information?Is a bond-device for cluster interconnect! It is more safe! Use DRBD for replication of the data if you use Direct attached Storage. DRBD can operate on top of LVM. So you can have that functionallity also. Perhaps you can try clustered LVM. Has nice features. Or just use ZFS, which offers all this. -- Dr. Michael Schwartzkopff MultiNET Services GmbH Addresse: Bretonischer Ring 7; 85630 Grasbrunn; Germany Tel: +49 - 89 - 45 69 11 0 Fax: +49 - 89 - 45 69 11 21 mob: +49 - 174 - 343 28 75 mail: misch at multinet.de web: www.multinet.de Sitz der Gesellschaft: 85630 Grasbrunn Registergericht: Amtsgericht M?nchen HRB 114375 Gesch?ftsf?hrer: G?nter Jurgeneit, Hubert Martens --- PGP Fingerprint: F919 3919 FF12 ED5A 2801 DEA6 AA77 57A4 EDD8 979B Skype: misch42
On Monday 12 October 2009, Michael Schwartzkopff wrote:> Am Montag, 12. Oktober 2009 15:54:04 schrieb Vadym: > > Hello > > I''m do a schema of mail service so I have only one question: > > Can Lustre provide me full automatic failover solution? > > No. See the lustre manual for this. You need a cluster solution for this. > The manual is *hopelessly* outdate at this point. Do NOT user heartbeat any > more. User pacemaker as the cluster manager. See www.clusterlabs.org. > > When I find some time I want to write a HOWTO about setting up a lustre > clsuter with pacemaker and OpenAIS.Also see bug 20807 (https://bugzilla.lustre.org/show_bug.cgi?id=20807) for a pacemaker agent. Cheers, Bernd
On Monday 12 October 2009, Michael Schwartzkopff wrote:> Am Montag, 12. Oktober 2009 15:54:04 schrieb Vadym: > > Hello > > I''m do a schema of mail service so I have only one question: > > Can Lustre provide me full automatic failover solution? > > No. See the lustre manual for this. You need a cluster solution for this. > The manual is *hopelessly* outdate at this point. Do NOT user heartbeat any > more. User pacemaker as the cluster manager. See www.clusterlabs.org. > > When I find some time I want to write a HOWTO about setting up a lustre > clsuter with pacemaker and OpenAIS.Also see bug 20807 (https://bugzilla.lustre.org/show_bug.cgi?id=20807) for a pacemaker agent. Cheers, Bernd -- Bernd Schubert DataDirect Networks