[SLE] Why does RAID remove a drive?

From: Simon Roberts (thorpflyer_at_yahoo.com)
Date: 10/31/05

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    Date: Sun, 30 Oct 2005 20:01:43 -0800 (PST)
To: suse-linux-e@suse.com

    Hi All,

    I just noticed that my Soft-RAID device (/dev/md0) had dropped a disk
    from its array. I was a little suprised by this as the drive in
    question was nearly new (being a replacement for a drive that failed a
    month or so ago). I checked the drive's status with the smartctl tool
    and it reported it as ok. I did short and long tests, and it still
    reports as OK. I can't find any information about why the drive was
    dropped from the array. How can I determine this?

    Also, if the drive reports itself as fully fine, is there any reason I
    shouldn't simply use raidhotadd to put it back in the array?

    Cheers,
    Simon

    "You can tell whether a man is clever by his answers. You can tell whether a man is wise by his questions." — Naguib Mahfouz

                    
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