On Oct 18, 2012, at 12:41 PM, Chris Murphy wrote: >> What about linear without striping? Not an option? (I haven't read btrfs >> docs for quite a while now and I don't remember.) > > Not an option. This is wrong. There is a -d single option which is essentially linear. Comparing raid0 to single, they basically even out with their various trade offs, so I have no problem if anaconda uses -d single, instead of the btrfs default of -d raid0. If the typical Fedora user has mixed size drives, -d single is probably better: maximized use of all space even with unequal drive sizes, and a very simple volume expansion just by adding another drive a rebalance is not applicable. Four attributes: recovery potential with a disk failure; performance enhancement; volume expansion by adding more disks; use of unequal disk sizes. raid0 single none [1] none[1] ~2x r/w 1x rebalance [2] simple not maximized [3] maximized [1] requires special knowledge to have a chance at any data retrieval [2] not required, but ideal if you're to continue having 2+ disk stripe performance [3] only stripes space that's in-common between disks, whereas single will completely fill disks of very different sizes. Chris Murphy _______________________________________________ Anaconda-devel-list mailing list Anaconda-devel-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/anaconda-devel-list
