Hello, First, thanks to all the people who helped to license this software under the GPL. This is a very important piece of work for the Free Software in the Enterprise Market. Just a few newbie questions. We've been thinking about implmenting a mail cluster with a Fiber SAN (IBM DS-4000) and OCFSv2 as the storage backend. The information on this volume will essentially be Postfix Maildirs, about 20.000 accounts. I've heard some complains about the memory usage and stability problems under some environments. At this time, do you think that OCFSv2 is suitable for this purpose? Should we wait a little and stick with NFS for a time? On the other hand, I'd like to use SLES10 and the OCFSv2 version that ships with it for our machines. Are there some recommendations about a preferred distro and OCFSv2 version to use (apart from the "ORACLE SUPPORT AND CERTIFICATION" section found in the website, which seems to be only for database use)? Thanks in advance! :-) -- Sergio Lopez Dpto. Sistemas - EFOR Consulting slopez@efor.es - 976467878
We run OCFS2 for a GroupWise 7 Post Office for about 700 users. The post office stores mailboxes (header information) as small database files (~30mb each). And individual messages as many small files (~2kb each). In total, the file system has about 1 million files in it. We have run into some trouble when trying to preform heavy I/O operations on the file system such as a backup or file indexing (updatedb). Our solution was to do incremental hot copy of the message store to reduce load during a backup. Also, you could use snapshot technology if you have such a thing on your SAN. We have a NetApp FAS3020 and use "SnapDrive" to mount a snapshot as a volume and preform a tape backup. - Andy -- Andrew Kipp Network Administrator Velcro USA Inc. Email: akipp@velcro.com Work: (603) 222-4844 CONFIDENTIALITY NOTICE: This email is intended only for the person or entity to which it is addressed and may contain confidential and/or privileged material. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply e mail and destroy all copies of the original message. If you are the intended recipient but do not wish to receive communications through this medium, please so advise immediately.>>> On 3/13/2007 at 7:42 AM, in message<17910.36381.40065.998298@localhost.localdomain>, Sergio Lopez <slopez@efor.es> wrote:> Hello, > > First, thanks to all the people who helped to license this software under > the GPL. This is a very important piece of work for the Free Software in the > Enterprise Market. > > Just a few newbie questions. We've been thinking about implmenting a mail > cluster with a Fiber SAN (IBM DS-4000) and OCFSv2 as the storage > backend. The information on this volume will essentially be Postfix > Maildirs, about 20.000 accounts. I've heard some complains about the memory > usage and stability problems under some environments. At this time, do you > think that OCFSv2 is suitable for this purpose? Should we wait a little and > stick with NFS for a time? > > On the other hand, I'd like to use SLES10 and the OCFSv2 version that ships > with it for our machines. Are there some recommendations about a preferred > distro and OCFSv2 version to use (apart from the "ORACLE SUPPORT AND > CERTIFICATION" section found in the website, which seems to be only for > database use)? > > Thanks in advance! :-)
Andy Kipp writes: > We run OCFS2 for a GroupWise 7 Post Office for about 700 users. The post office stores mailboxes (header information) as small database files (~30mb each). And individual messages as many small files (~2kb each). In total, the file system has about 1 million files in it. > > We have run into some trouble when trying to preform heavy I/O operations on the file system such as a backup or file indexing (updatedb). Our solution was to do incremental hot copy of the message store to reduce load during a backup. Also, you could use snapshot technology if you have such a thing on your SAN. We have a NetApp FAS3020 and use "SnapDrive" to mount a snapshot as a volume and preform a tape backup. > Good to hear about this. What distribution and OCFSv2 version are you running? Thanks! -- Sergio Lopez Dpto. Sistemas - EFOR Consulting slopez@efor.es - 976467878
You better try SLES9 SP3, not SLES10. Numerous reposts comes about problems with SLES10 OCFSv2 (at least dont try it until SP1 is completed). On the other hand, SLES9 SP3 and OCFSv2 works pretty stable (but I'd better test it in less critical application). PS. When working with SLES, don't forget to upgrade. SLES9 SP3 had not OCFS, SLES9 SP3 kernel 282 had few OCFSv2 bugs,m and last kernel #283 have a very stable OCFSv2 version. SLES10 OCFS - I know that Novell have a lab testing SLES10 + evms + heartbeat2 + OCFSv2, but we don't know hos succesfull are they making it all stable enough for production. ----- Original Message ----- From: "Sergio Lopez" <slopez@efor.es> To: <ocfs2-users@oss.oracle.com> Sent: Tuesday, March 13, 2007 4:42 AM Subject: [Ocfs2-users] OCFSv2 in a mail cluster environment> Hello, > > First, thanks to all the people who helped to license this software under > the GPL. This is a very important piece of work for the Free Software inthe> Enterprise Market. > > Just a few newbie questions. We've been thinking about implmenting a mail > cluster with a Fiber SAN (IBM DS-4000) and OCFSv2 as the storage > backend. The information on this volume will essentially be Postfix > Maildirs, about 20.000 accounts. I've heard some complains about thememory> usage and stability problems under some environments. At this time, do you > think that OCFSv2 is suitable for this purpose? Should we wait a littleand> stick with NFS for a time? > > On the other hand, I'd like to use SLES10 and the OCFSv2 version thatships> with it for our machines. Are there some recommendations about a preferred > distro and OCFSv2 version to use (apart from the "ORACLE SUPPORT AND > CERTIFICATION" section found in the website, which seems to be only for > database use)? > > Thanks in advance! :-) > > -- > Sergio Lopez > Dpto. Sistemas - EFOR Consulting > slopez@efor.es - 976467878 > > _______________________________________________ > Ocfs2-users mailing list > Ocfs2-users@oss.oracle.com > http://oss.oracle.com/mailman/listinfo/ocfs2-users >