LARGE RAID LOGICAL DRIVE FAILS UNDER UNIXWARE 7.1

Subject: LARGE RAID LOGICAL DRIVE FAILS UNDER UNIXWARE 7.1
New Netfinity server RETAIN Tip: 

    Record number:       H20340
    Device:              D/T8681
    Model:               M
    Hit count:           UHC00000
    Success count:       USC0000
    Publication code:    PC50
    Tip key:             006
    Date created:        O99/12/07
    Date last altered:   A99/12/07
    Owning B.U.:         USA


Abstract: LARGE RAID LOGICAL DRIVE FAILS UNDER UNIXWARE 7.1

TEXT:

Large RAID logical drive fails under UnixWare 7.1

SYMPTOMS:

UnixWare 7.1 will not install onto a logical drive that is greater than 128GB.

Attempting to install onto a logical drive that is greater than 128GB results in errors with "Unable to find root drive".

Anything under 128GB logical drive size is not affected.

PROBLEM ISOLATION AIDS:

•  The system is any of the following IBM Netfinity servers:

          a Netfinity 8500R server, Type 8681, any Model.
          a Netfinity 7000-M10 server, Type 8680, any Model.
          a Netfinity 5500-M20 server, Type 8662, any Model.
          a Netfinity 5500-M10 server, Type 8661, any Model.
          a Netfinity 5500 server, Type 8660, any Model.
          a Netfinity 5000 server, Type 8659, any Model.
          a Netfinity 3500-M10 server, Type 8655, any Model.
          a Netfinity 3000 server, Type 8476, any Model.
          a Netfinity 1000 server, Type 8477, any Model.
   

•  The system is configured with a logical drive greater than 128GB.
•  The Networking Operating System is SCO UnixWare 7.1.
•  The system has the described symptom.

WORKAROUND:

The recommended and guaranteed solution is to use the existing ISL (Initial System Load) infrastructure to modify the filesystem block size to at least 2048 bytes.
This is easily achieved during the installation by the following procedure:

1.  Choose "Customize filesystems & slices" <F10>.
2.  Tab to the "Size" field of the filesystem(s) from which you would like to change the filesystem blocksize.
3.  Select "Advanced" by pressing <F6>.
4.  Tab if necessary to the "Filesystem Block Size" field.
5.  Use the "Choices" key <F2>, to display the available values.
6.  Tab to the appropriate value(2048, 4096 or 8192), in this case 2048.
7.  Accept the field value by pressing <F10>.

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