AutoYaST control file fails to detect Multipath devices

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Environment

SUSE Linux Enterprise Server 12 Service Pack 2 (SLES 12 SP2)
AutoYaST
Device Mapper Multipath Path (DM-MPIO)

Situation

Using an AutoYaST file to install a server fails to detect the MPIO drive. The OS is intended to be installed with root on MPIO.

The autoyast file contained the following sections:

<general>
  <storage>
    <start_multipath config:type="boolean">true</start_multipath>
  </storage>
</general> 
<partitioning config:type="list">
  <drive>
<!--
    <device>/dev/mapper/3600507680190014da000000000000337</device>
-->
    <type config:type="symbol">CT_DISK</type>
  </drive>
</partitioning>

Likewise, LIBSTORAGE_MULTIPATH_AUTOSTART=ON was added to the kernel command line using uppercase letters, since the option is case sensitive.

If the <device><drive> is specified, the MPIO device is used for the installation, but fails if it's commented out. Since the customer wants to install many servers, they require the <drive> be commented out so autoyast will auto detect the MPIO drive.

Resolution

Change the device type from CT_DISK to CT_DMMULTIPATH.

Change from this:

<type config:type="symbol">CT_DISK</type>

To this:

<type config:type="symbol">CT_DMMULTIPATH</type>

Cause

The drive type designation "CT_DISK" limited auto detected drives to physical type hard disks.

Disclaimer

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