On Thu, Sep 20, 2012 at 01:11:38PM +0200, Spelic wrote: > Hello list > a few questions > > 1- Does XFS support alignment to concatenation RAIDs (e.g. linear > over raid1) similarly to striped ones? No. It's being considered and I know how to do it, but it's lower priority than other stuff I'm working on at the moment. > I am guessing probably su and > sw should not be specified and the agcount should be multiple of the > number of the concatenated devices, is that correct? If you are concatenating RAID0/5/6, then you shoul duse su/sw as per the alignment of the volumes being concatenated. > 2- Can mkfs parameters be altered after creation, e.g. after growing > a RAID and then growing the XFS fs, can I also alter su, sw, agcount > somehow? You can alter su/sw as a mount option if the filesystem was made with them initially. > 3- I seem to remember there was an xattr that one could attach to > /home (if /home was under XFS) so that every user (subdir of /home) > would get a different AG in a different RAID device. I cannot find > that information anymore on the internet; could you refresh my mind? Nothing of the sort. if you are using the inode64 allocator, then each new directory is placed i a different AG. That's as good as it gets right now. Cheers, Dave. -- Dave Chinner david@xxxxxxxxxxxxx _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs
