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Thread: AutoYaST Installation fails due to LVM configuration

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  1. #1
    ackwire NNTP User

    AutoYaST Installation fails due to LVM configuration

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

    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
    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.

    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-

    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)


    --SLES 11 SP1 is the version I am installing

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  2. #2
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    Re: AutoYaST Installation fails due to LVM configuration


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