On Mon, 19 Jan 2009, Adam Leventhal wrote: > >> Are you telling me zfs is deficient to the point it can't handle basic >> right-sizing like a 15$ sata raid adapter? > > How do there $15 sata raid adapters solve the problem? The more details you > could provide the better obviously.
It is really quite simple. If the disk is resilvered but the new drive is a bit too small, then the RAID card might tell you that a bit of data might have lost in the last sectors, or it may just assume that you didn't need that data, or maybe a bit of cryptic message text scrolls off the screen a split second after it has been issued. Or if you try to write at the end of the volume and one of the replacement drives is a bit too short, then the RAID card may return a hard read or write error. Most filesystems won't try to use that last bit of space anyway since they run real slow when the disk is completely full, or their flimsy formatting algorithm always wastes a bit of the end of the disk. Only ZFS is rash enough to use all of the space provided to it, and actually expect that the space continues to be usable. Bob ====================================== Bob Friesenhahn bfrie...@simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer, http://www.GraphicsMagick.org/ _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
