ZFS Mirror Help

Discussion in 'Technical' started by mythgard, Nov 26, 2013.

  1. mythgard

    mythgard New Member


    I am hoping that someone on here can help me. I am running Ubuntu Server 12.04 LTS with zfs installed.

    I have a current pool of 1 2TB drive and 1 1TB drive. I would like to mirror that pool to a third 3TB drive. It looks like I should have mirrored the 2TB to the 3TB and then added the 1TB drive?

    If that is not the case, what is the command that I need to use to add the 3TB drive as a mirror to the existing pool of the 1 and 2 TB drives?
  2. Quaxth

    Quaxth Member

    AFAIK you could do only:
    1. mirror 1TB to 1TB
    2. mirror 2TB to 2TB
    Drives should have the same capacity while the mirror drive could be bigger up to 100MB. If the mirror drive is more big, it would be "downgraded" to the size of the master.
    Mirroring 2 drives to 1 is impossible AFAIK.

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