On Thu, Feb 05, 2015 at 12:23:53AM +0000, James Woolliscroft wrote: > Hi, > > > > I am new to XFS, I have spent a significant time searching for information > and have not found any documentation relating to the use of XFS over RAID > with N Drives where the Stripe Unit >256K. Use the defaults - they do the right thing. > It appears that XFS on RHEL7 and clones is limited to a maximum Stripe Unit > of 256KB. That's not correct. mkfs.xfs prior to v3.2.2 (i.e the latest) throw a warning about the default log stripe unit not being able to be set larger than 256k, but it then sets the lsu to a default of 32k and continues. The current version (which I think will hit RHEL7.1) omits the warning and just sets the lsu to 32k - defaults should just do the right thing and not bother users who are using defaults. Either version, however, will still result in the data stripe unit/width is still going to be 1m/2m in your case. > I also would like to find some information on how to correctly interpret the > statistics output when formatting a volume with XFS, particularly as the > process may use other settings which may require further investigation? They are a reflection of the command line parameters, or if not specified, the default CLI values. So, read the mkfs.xfs man page as it explains what everything means. Cheers, Dave. -- Dave Chinner david@xxxxxxxxxxxxx _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs
