Re: [PERFORM] Moving postgres to FC disks
On Tue, 2004-04-20 at 17:27, Joshua D. Drake wrote: > > -Currently, the internal RAID volume is ext3 filesystem. Any > > recommendations for the filesystem on the new FC volume? Rieserfs? > > > > > XFS What Linux distributions are popular in here for PG+XFS? I'm very disappointed that Redhat Enterprise 3 doesn't appear to support XFS/JFS, or anything else. Suse Server 8 seems very dated, at least from the eval I downloaded. I'm curious as to where other people have gone with the death of RH9. I'd have gone on to Redhat 3 if I wasn't interested in getting some of the benefits of XFS at the same time ... ---(end of broadcast)--- TIP 9: the planner will ignore your desire to choose an index scan if your joining column's datatypes do not match
Re: [PERFORM] Moving postgres to FC disks
I agree on not linking and adding non-SAN disk dependancy to your DB. I'm trying to understand your FS reasoning. I have never seen XFS run faster than ReiserFS in any situation (or for that matter beat any FS in performance except JFS). XFS has some nifty very large file features, but we're talking about 30G and all modern FSs support >2G files. My tendancy would be to stay on ext3, since it is the default RH FS. I would review site preference and the SAN recommended FS and see if they add any compelling points. /Aaron - Original Message - From: Joshua D. Drake To: Anjan Dave Cc: [EMAIL PROTECTED] Sent: Tuesday, April 20, 2004 8:27 PM Subject: Re: [PERFORM] Moving postgres to FC disks -With the db size being as big as, say, 30+GB, how do I move it on the new logical drive? (stop postgresql, and simply move it over somehow and make a link?)I would stop the database, move the data directory to the new volume using rsync then start up postgresql pointed at the new data directory.Providing everything is working correctly you can then remove the old data directory. -Currently, the internal RAID volume is ext3 filesystem. Any recommendations for the filesystem on the new FC volume? Rieserfs? XFS DBs are 7.4.1(RH9), and 7.2.3 (RH8). Appreciate any pointers. Thanks,Anjan-- Command Prompt, Inc., home of Mammoth PostgreSQL - S/ODBC and S/JDBC Postgresql support, programming shared hosting and dedicated hosting. +1-503-667-4564 - [EMAIL PROTECTED] - http://www.commandprompt.com PostgreSQL Replicator -- production quality replication for PostgreSQL
Re: [PERFORM] Moving postgres to FC disks
-With the db size being as big as, say, 30+GB, how do I move it on the new logical drive? (stop postgresql, and simply move it over somehow and make a link?) I would stop the database, move the data directory to the new volume using rsync then start up postgresql pointed at the new data directory. Providing everything is working correctly you can then remove the old data directory. -Currently, the internal RAID volume is ext3 filesystem. Any recommendations for the filesystem on the new FC volume? Rieserfs? XFS DBs are 7.4.1(RH9), and 7.2.3 (RH8). Appreciate any pointers. Thanks, Anjan -- Command Prompt, Inc., home of Mammoth PostgreSQL - S/ODBC and S/JDBC Postgresql support, programming shared hosting and dedicated hosting. +1-503-667-4564 - [EMAIL PROTECTED] - http://www.commandprompt.com PostgreSQL Replicator -- production quality replication for PostgreSQL
[PERFORM] Moving postgres to FC disks
I am planning to move the pg databases from the internal RAID to external Fiber Channel over SAN. Question is – -With the db size being as big as, say, 30+GB, how do I move it on the new logical drive? (stop postgresql, and simply move it over somehow and make a link?) -Currently, the internal RAID volume is ext3 filesystem. Any recommendations for the filesystem on the new FC volume? Rieserfs? DBs are 7.4.1(RH9), and 7.2.3 (RH8). Appreciate any pointers. Thanks, Anjan
