Supported multi-path devices

Edit online

The AIX® default PCMs support a set of disk devices and tape devices defined in the devices.common.IBM.mpio.rte fileset.

Devices not supported by the AIX disk PCMs or tape PCMs require the device vendor to provide attributes predefined in the ODM, a PCM, and any other supporting code necessary to recognize the device as MPIO-capable.

To determine which disk devices are supported by the AIX disk PCM, run the following script :

          odmget -qDvDr=aixdiskpcmke PdDv | grep uniquetype | while read line
          do
                utype=`echo $line | cut -d'"' -f2`
                dvc=`odmget -q"uniquetype=$utype AND attribute=dvc_support" PdAt`
                echo $dvc | grep values | cut -d'"' -f2
          done

To determine which tape devices are supported by the AIX disk PCM, run the following script :

          odmget -qDvDr=aixtapepcmke PdDv | grep uniquetype | while read line
          do
                utype=`echo $line | cut -d'"' -f2`
                dvc=`odmget -q"uniquetype=$utype AND attribute=dvc_support" PdAt`
                echo $dvc | grep values | cut -d'"' -f2
          done

The script output displays a list of unique device types supported by the AIX default PCMs. The three device types supported by the AIX Disk PCM are self-configuring parallel SCSI disk (disk/scsi/scsd) and MPIO other FC disk(disk/fcp/mpioosdisk), and MPIO other iSCI (disk/iscsi/mpioosdisk). The device type supported by the AIX tape PCM is MPIO other FC tape (tape/fcp/mpioost).

MPIO other FC disk and MPIO other FC tape devices are a subset of other Fibre Channel disks and other Fibre Channel tapes, respectively. A device is supported as an MPIO other FC device only if there are no vendor-provided ODM predefined attributes and the device has been certified to operate with one of the AIX default PCMs. Certification does not guarantee that all device capabilities are supported when the device is configured as an MPIO other FC device.

An MPIO other iSCSI disk is a subset of other iSCSI disks. A device is supported as an MPIO other iSCSI disk only if there is no vendor-provided ODM predefined attributes and the device has been certified to operate with the AIX PCM. Certification does not guarantee that all device capabilities are supported when the device is configured as an MPIO other iSCSI disk.

To determine which devices are supported as MPIO other FC disk, run the following script:

 odmget –quniquetype=disk/fcp/mpioosdisk PdAt | grep deflt | cut -d'"' -f2

To determine which devices are supported as MPIO other FC tape, run the following script:

 odmget -q "uniquetype=tape/fcp/mpioosdisk AND attribute=mpio_model_map PdAt | grep deflt | cut -d'"' -f2

To determine which devices are supported as MPIO other iSCSI disks, run the following script:

odmget –quniquetype=disk/iscsi/mpioosdisk PdAt | grep deflt | cut -d'"' -f2

The script output displays a list of inquiry data that contains the device vendor and model.

To display all MPIO-capable devices that are installed on the system, yes it would run the following script:

odmget -qattribute=unique_id PdAt | grep uniquetype | cut -d'"' -f2

The script output displays a list of unique MPIO-capable device types, supported by the AIX default PCMs and vendor provided PCMs.