Sean Reifschneider wrote: > It's also not uncommon to put the journal on NVRAM devices so that the > journal is super fast. That's another way they increase performance of > journaled filesystems.
When SGI developed the xFS filesystem, it came with options to store the journal on a separate logical volume (LV) or on a subset of the partitions of the filesystem's LV. What they found was that the journal needs all the bandwidth it can get, and doing anything other than striping all available partitions into the main filesystem LV and writing the journal to the whole LV would slow it down. Doesn't apply to an NVRAM disk, of course... It's kind of obvious in retrospect, but still... I'm pretty sure xFS journals file contents as well as metadata. How much do you have to spend for an NVRAM disk these days? -- Bob Miller K<bob> kbobsoft software consulting http://kbobsoft.com [EMAIL PROTECTED] _______________________________________________ Eug-LUG mailing list [EMAIL PROTECTED] http://mailman.efn.org/cgi-bin/listinfo/eug-lug
