Mirroring Vinum Volumes - importance of subdisk sequence on mirror device

From: Richard Johannesson (rtjohan_at_syspres.com)
Date: 07/30/03

  • Next message: bsd_junkie: "HSF modems" 
    To: <freebsd-questions@freebsd.org>
Date: Wed, 30 Jul 2003 13:52:17 -0700

    Question:
    Is it important that the sequence plexes/sub-disks get created in for the
    primary drive and the mirrored drive be the same? Any performance penalty?

    I'm guessing that a different sub-disk creation order will put the sub-disks
    in different places on a disk.

    Background - if needed:
    Have 10 vinum volumes being mapped by 10 plexes to the root drive.

    To get mirroring, I created plexes/sub-disks for swap, root, and usr using
    the specific offsets for each on the 2nd hdd device and map them back to
    their specific volumes they should be mirroring.

    When I start creating the other plexes/sub-disks on the 2nd hdd and map them
    back to the volume already setup, I won't be using specific offsets.

    Thanks,
    Richard

    _______________________________________________
    freebsd-questions@freebsd.org mailing list
    http://lists.freebsd.org/mailman/listinfo/freebsd-questions
    To unsubscribe, send any mail to "freebsd-questions-unsubscribe@freebsd.org"

  • Next message: bsd_junkie: "HSF modems"