Will fdisk work on a gmirror device?

From: Rudy Rucker (crapsh_at_monkeybrains.net)
Date: 10/27/05

  • Next message: Marcin Jessa: "Re: HEADS UP! 6.0-RELEASE coming" 
    Date: Thu, 27 Oct 2005 11:55:10 -0700
To: freebsd-current@freebsd.org

    I have a 200 GB mirrored gm0. I have one slice with 6 partitions. I
    would like to delete the 6th 100GB large partition on slice one, run
    fdisk, and make a second 100GB slice.

    Will this not mangle my system (if reasonable values are entered, of
    course)?
      fdisk -u /dev/mirror/gm0

    I am running FreeBSD 6.0-RC1. (fdisk seems to see the gm0 better than
    in 5.4...).

    Rudy

    Geom name: gm0
    State: COMPLETE
    Components: 2
    Balance: round-robin
    Slice: 4096
    Flags: NONE
    GenID: 0
    SyncID: 1
    ID: 2988355435
    Providers:
    1. Name: mirror/gm0
        Mediasize: 200049647104 (186G)
        Sectorsize: 512
        Mode: r6w6e7
    Consumers:
    1. Name: ad0
        Mediasize: 200049647616 (186G)
        Sectorsize: 512
        Mode: r1w1e1
        State: ACTIVE
        Priority: 0
        Flags: NONE
        GenID: 0
        SyncID: 1
        ID: 2584972746
    2. Name: ad2
        Mediasize: 200049647616 (186G)
        Sectorsize: 512
        Mode: r1w1e1
        State: ACTIVE
        Priority: 0
        Flags: NONE
        GenID: 0
        SyncID: 1
        ID: 3791733936

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