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Thread: AutoYaST Installation fails due to LVM configuration

  1. #1
    ackwire NNTP User

    AutoYaST Installation fails due to LVM configuration


    PROBLEM:
    When installing via an AutoYaST setup file the partitioning portion of
    the setup fails when trying to allocate the LVM scheme I am using.

    DETAILS:
    PXE Server + AutoYaST profile
    The installation works fine if I setup a standard non-LVM or a
    standard-LVM setup. So for all those reading this there is nothing wrong
    with
    the PXE Server or any of my non AutoYaST profile settings.

    The AutoYaST XML file that I am using was generated after an
    installation of "ServerA" and I am attempting to re-install to "ServerA"
    using this same XML.
    So, there should be no issues regarding disk since there are no changes
    to the system between the successful installation and the re-install.

    I know what the issue is just not how to fix it.

    BACKGROUND:
    We are a very heavily virtualized shop and as such SAN backend storage
    is highly utilized. We found some time ago that disk alignment would be
    key to lowering the SAN I/O utilization since we have 1000's of
    virtualized servers. So, during my rebuilds I was tasked with making
    this happen.

    Also, since our systems change a lot we leverage LVM extensively.
    Instead of manually offsetting partitions to make them aligned.
    If you take say /dev/sdb and assign the entire drive to an LVM Volume
    Group and then create your LV's the disk is automatically aligned since
    you are not creating
    a /dev/sdb1 that has a partition offset that will need to be aligned.

    After adopting this method our performance on the SAN went up due to
    less utilization and lower writes due to mis-aligned disk. Also the
    system performance increased locally using this method. However, now
    that I am looking to deploy this to all our systems during a re-build I
    find that I am having issues with AutoYaST.

    It gives me the error: -A logical volume with the requested size could
    not be created-

    Steps:
    1. I simplified the installation by doing a standard build with normal
    partitions and using the LVM scheme described above on an additional
    disk with a mount to /test
    2. Duplicated 1 but made the LV that was inside the VG 1/2 the size of
    the available disk
    3. Imported the autoinstall.xml into the Configurator and manually set
    the additional disk like described
    -this does work but it only works because when YaST is running it
    automatically creates /dev/sdb1 even though I did not specify it
    4. Searched the web but have had no joy
    5. Opened a support ticket with Novell (no help so far)

    Thanks


    --SLES 11 SP1 is the version I am installing


    --
    ackwire
    ------------------------------------------------------------------------
    ackwire's Profile: http://forums.novell.com/member.php?userid=88534
    View this thread: http://forums.novell.com/showthread.php?t=450182


  2. #2
    Automatic Reply NNTP User

    Re: AutoYaST Installation fails due to LVM configuration

    ackwire,

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