On Tue, Mar 21, 2006 at 12:56:18PM +0100, Steinar H. Gunderson wrote: > On Tue, Mar 21, 2006 at 12:52:46PM +0100, Csaba Nagy wrote: > > They knew however that for the data partitions no FS journaling is > > needed, and for the WAL partition meta data journaling is enough, so I > > guess they tuned ext3 for this. > > For the record, that's the wrong way round. For the data partitioning > metadata journaling is enough, and for the WAL partition you don't need any > FS journaling at all. Are you sure? Metadate changes are probably a lot more common on the WAL partition. In any case, I don't see why there should be a difference. The real issue is: is related filesystem metadata sync'd as part of a file being fsync'd? -- Jim C. Nasby, Sr. Engineering Consultant jnasby@xxxxxxxxxxxxx Pervasive Software http://pervasive.com work: 512-231-6117 vcard: http://jim.nasby.net/pervasive.vcf cell: 512-569-9461
