Configuring the VIOS for client storage

You can configure the Virtual I/O Server (VIOS) partition for client storage by using the VIOS command line.

1. On the VIOS command line type the following command to list the SCSI protocol devices of the Fibre Channel adapter that are configured on the VIOS partition:

   lsdev | grep fscsi

   Output similar to the following is displayed:

   fscsi0 Available FC SCSI I/O Controller Protocol Device
   fscsi1 Available FC SCSI I/O Controller Protocol Device

   where, fscsi0 and fscsi1 are the Small Computer Serial Interface (SCSI) protocol devices of the Fibre Channel adapter that are configured on the first VIOS partition.
2. To enable dynamic tracking and fast failover, update the attributes of the SCSI protocol device by entering the following commands:

   chdev -dev fscsi0 -attr dyntrk=yes fc_err_recov=fast_fail
   chdev -dev fscsi1 -attr dyntrk=yes fc_err_recov=fast_fail

   Note: If the SCSI protocol device of the Fibre Channel adapter is busy, append the -perm flag to the command, as shown in the following example. The attributes are not applied to the device until the VIOS partition is rebooted.

   chdev -dev fscsi0 -attr dyntrk=yes fc_err_recov=fast_fail -perm

3. Configure the disks on the VIOS by typing cfgdev.
4. List the disks on the VIOS partition and show the disk type:

   lsdev -type disk

   Output similar to the following is displayed:

   Name   Status    Description
   hdisk0 Available SAS Disk Drive
   hdisk1 Available SAS Disk Drive
   hdisk2 Available MPIO DS4800 Disk
   hdisk3 Available MPIO DS4800 Disk
   hdisk4 Available MPIO DS4800 Disk
   hdisk5 Available MPIO DS4800 Disk
   hdisk6 Available MPIO DS4800 Disk
   hdisk7 Available MPIO DS4800 Disk

5. Confirm the logical unit number (LUN) ID in the storage area network (SAN) on the VIOS partition for each disk by entering the following command:

   lsdev -dev hdiskX -attr | grep -i -E "reserve|unique_id"

   Output similar to the following is displayed:

   reserve_policy single_path Reserve Policy True
   unique_id 3E213600A0B8000114632000092784EC50F0B0F1815 FAStT03IBMfcp Unique
   device identifier False

6. For users with EMC disks and disks that use local Multipath I/O (MPIO), deactivate the SCSI reserve lock on the disk by entering the following command:

   chdev -dev hdisk6 -attr reserve_policy=no_policy

7. Determine the virtual adapter name of the virtual SCSI adapter:

   lsdev -vpd | grep "Virtual SCSI"

   Output similar to the following is displayed:

   vhost0 U8233.E8B.061AB2P-V1-C101 Virtual SCSI Server Adapter

8. Map the hdisk6 disk to the CLIENT1 client partition:

   mkvdev -vdev hdisk6 -vadapter vhost0

   Output similar to the following is displayed:

   vtscsi0 Available

9. List the devices that are mapped to the vhost0 virtual SCSI adapter:

   lsmap -vadapter vhost0

   Output similar to the following is displayed:

   SVSA            Physloc                                      Client Partition ID
   --------------- -------------------------------------------- ------------------
   vhost0          U8233.E8B.061AB2P-V1-C101 0x0000000a
   
   VTD                   vtscsi0
   Status                Available
   LUN                   0x8100000000000000
   Backing device        hdisk6
   Physloc               U5802.001.0087356-P1-C2-T1-W202200A0B811A662-L5000000000000
   Mirrored              false

10. Configure the second VIOS partition. See Configuring the VIOS for a client network for instructions.