On 1/20/2012 9:52 AM, Michael Monnerie wrote: > On Dienstag, 17. Januar 2012 Stan Hoeppner wrote: >> So to be clear, your issue with the above isn't with my partition >> alignment math WRT the OP's P2000 array, but is with using XFS stripe >> alignment in general, correct? > > Yes. I just wanted to document this as people often expand RAIDs and > forget to apply the changes to stripe width. > >> There is one really simple way around this issue you describe: don't >> add drives to an existing array. Simply create another array with >> new disks, create a new aligned XFS on the array, and mount the >> filesystem in an appropriate location. There is no 11th Commandment >> stating one must have a single massive XFS atop all of one's disks. >> ;) >> >> There is little to no application software today that can't be >> configured to store its data files across multiple directories. So >> there's no need to box oneself into the corner you describe above. > > It's a management burden to do that. I've learned that systems usually > are strictly structured in their configuration, so it's often better to > extend a RAID and to keep the config, as this is cheaper in the end. At > least for the salaries of good admins here in Europe ;-) If ease (or cost) of filesystem administration is of that much greater priority than performance, then why are you using XFS in the first place instead of EXT? -- Stan _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs
