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Thread: Shifting /dev/sd ??

  1. #1
    Join Date
    Jan 2012
    Beans
    7

    Shifting /dev/sd ??

    OK..this is really strange. I have 4 Dell R415's with the H200 controllers, each with 4 2TB disks organized as JBODs. Nothing fancy. I have ubuntu 11.04. I built these out a few months ago. I had to re-partition and create new file systems on the 3 disks on each machine. The disks are mounted on /ha1 /ha2 and /ha3 from partitions /dev/sdb1 /dev/sdc1 and /dev/sdd1, respectively. Everything looks great. Mounts great. BUT!! When I write a few files to the drives I get tons of I/O errors and when I do a ls -las /dev/sd* I notice that /dev/sdb /dev/sdc and /dev/sdd are gone! I now have /dev/sde /dev/sdf and /dev/sdg What? No wonder there are lots of errors, the partitions have moved!

    Your first reaction, and mine: bad disks. Really? 12 bad disks in a row?

    Things I've tried:
    used both fdisk and parted to partition
    used lots of different tools to find bad blocks, nothing found
    updated the H200 firmware to the latest 1/12/12 release
    tried a brand-new, strait from the factory disk, works great

    Is there something about a new factory disk?

  2. #2
    Join Date
    Feb 2007
    Location
    Romania
    Beans
    Hidden!
    Distro
    Ubuntu Development Release

  3. #3
    Join Date
    Jan 2012
    Beans
    7

    Re: Shifting /dev/sd ??

    yes..I'm using UUIDs in /etc/fstab...doesn't help.

  4. #4
    Join Date
    Jan 2012
    Beans
    7

    Re: Shifting /dev/sd ??

    And..after I write to /ha1 /ha2 and /ha3 and they "shift" when I do

    sudo blkid

    I get the UUIDs that were associated with /dev/sdb /dev/sdc and /dev/sdd now listed for /dev/sde /dev/sdf and /dev/sdg respectively.

  5. #5
    Join Date
    Jan 2012
    Beans
    7

    Re: Shifting /dev/sd ??

    This may be related this bug https://launchpad.net/+search?field.text=777441


    There appears to be a bug in the mptsas driver that re-maps drives from time to time...how nice

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