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  1. #1
    Join Date
    Oct 2003
    Location
    Hanoi
    Posts
    4,306

    raid disk partition error

    I have a disk in raid, but it seems raid is not working correctly. I took it out, and plug into another server without raid. However, fdisk shows error

    #fdisk /dev/sdb
    device contains neither a valid DOS partition table, nor Sun, SGI or OSF disklabel
    Building a new DOS disklabel. Changes will remain in memory only,
    until you decide to write them. After that, of course, the previous
    content won't be recoverable.

    The number of cylinders for this disk is set to 20023.
    There is nothing wrong with that, but this is larger than 1024,
    and could in certain setups cause problems with:
    1) software that runs at boot time (e.g., old versions of LILO)
    2) booting and partitioning software from other OSs
    (e.g., DOS FDISK, OS/2 FDISK)
    Warning: invalid flag 0x0000 of partition table 4 will be corrected by w(rite)

    Command (m for help):
    Should I correct the partition table now, or should I put it in another raid for checking?

  2. #2
    Join Date
    Nov 2005
    Posts
    352
    Quote Originally Posted by gate2vn View Post
    I have a disk in raid, but it seems raid is not working correctly. I took it out, and plug into another server without raid. However, fdisk shows error



    Should I correct the partition table now, or should I put it in another raid for checking?
    Putting a RAID disk in a non-RAID system will always show errors in FDISK because there is no standard partition table (just the RAID formatting). Trying to use FDISK to fix the drive will only force you to have to re-initialize the drive in your original RAID box and rebuild the RAID array. Also, the cylinder counts being off does not always indicate a problem, and wouldn't matter anyway since the drive is in a RAID array. What error are you getting in the original system that indicates that the RAID is not working properly?

  3. #3
    Join Date
    Oct 2003
    Location
    Hanoi
    Posts
    4,306
    That's what I am thinking. Anyway, it's ended up with a failed disk. Took it out of array, system is working again.

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