On Sun, 23 Nov 2008 07:06:28 -0800 (PST) KenShelby <kshelby@xxxxxxxxxxxxx> wrote: > > I'm not looking for a single "magic bullet" answer. Are there any > guidelines at all, any best practices that have been found over time to > be a good place to start? What I seek is either informed opinion or > information - if it exists - about how to make choices on EXT3 journal > configuration for a SAN installation. Common sense and knowlege of your application are a good start. You said that you have lots of random io, so I would be more concerned over latency than bandwith. If your SAN provides you with good enough latency then I wouldn't bother much about journal configs and go with defaults, but if your SAN sits on something like iSCSI with noticeable latency then I'd test a setup with journal on local disk, possibly even in full data journaling mode. If I had the money I'd look into SSDs for that purpose, either in form of SSD sata/sas drive or in form of PCIe card (fusion-io for example). -- Jure Pečar http://jure.pecar.org/ _______________________________________________ Ext3-users mailing list Ext3-users@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/ext3-users
