Yeah, after I learned that ditto blocks don't protect against failed drives, I started working on a plan to move to raidz. I couldn't find any good documentation on setting multiple filesystems systems in one pool, though I know it is possible. I think I have enough storage to work this together somehow, but I think I need to read more and plan more.
Thanks for your response On Thu, Sep 17, 2009 at 8:12 PM, Bob Friesenhahn <bfrie...@simple.dallas.tx.us> wrote: > On Thu, 17 Sep 2009, Joe Toppi wrote: > >> I filled this with data. So I added a 1.5 TB drive to the pool. Where will >> my ditto blocks and checksums go? Will it migrate data from the other drives >> automatically? Will it migrate data if I scrub or re-silver? will it never >> migrate data and just store all the new blocks and checksums on the new >> drive? > > Zfs does not automatically migrate data just because you added more drives. > Scrub will only migrate failing data blocks. Resilver clones a failing > disk. When a vdev becomes very full, more writes will be directed to the > empty devices. > > If you have enough free disk space to store everything you had before, plus > lots of space to spare, you could try creating a new filesystem in the pool > and using zfs send to send from the existing filesystem to the new > filesystem, and then destroy the old filesystem once you are satisified with > the new one. This would only work if there is considerably more free space > than existing data and the result will still be lop-sided. > > If you have a whole lot of reliable storage space elsewhere, you could use > zfs send to send to a file in that other storage space, destroy the old > filesystem, and then recreate it with your zfs send file. > > Bob > -- > Bob Friesenhahn > bfrie...@simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/ > GraphicsMagick Maintainer, http://www.GraphicsMagick.org/ > -- - Joe Toppi (402) 714-7539 top...@gmail.com http://www.assuredts.com/toppij/ _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
