Mapping Storage Array(SAN) Volumes to AIX host

I have an older post where I talk about mapping SAN volumes to a Linux host, and on how to identify the volumes that were created on the array.

In this post I will show how to identify a volumes created on a Storwize V7000 Storage Array on the AIX host.

From the Storwize V7000 GUI we can see that I created 1 volume. Volume test_UID with UID 60050768027F0001F00000000000016C was created, the volume was then mapped to an AIX host.

On the AIX host run the lspv command this will list the current volumes available on the host. If you don't see the newly created volumes, run the cfgmgr command from the command line. Next run the lspv command, and you will see the two new volumes that were created and mapped onto the host.

isvp14_ora> lspv hdisk0          00f62a6b98742dad                    rootvg          active hdisk59         00f62a6bf28975ed                    swapa           active hdisk230        none                                None

Running the lsattr command on the AIX host as shown below will show lots of information about the LUN, including the unique_id       3321360050768027F0001F00000000000016C04214503IBMfcp

From highlighted part of the unique_id 3321360050768027F0001F00000000000016C04214503IBMfcp
field we can find that this LUN maps to the the newly created volume on the storage array.

isvp14_ora> lsattr -El hdisk229 PCM             PCM/friend/fcpother                                 Path Control Module              False algorithm       fail_over                                           Algorithm                        True clr_q           no                                                  Device CLEARS its Queue on error True dist_err_pcnt   0                                                   Distributed Error Percentage     True dist_tw_width   50                                                  Distributed Error Sample Time    True hcheck_cmd      test_unit_rdy                                       Health Check Command             True hcheck_interval 60                                                  Health Check Interval            True hcheck_mode     nonactive                                           Health Check Mode                True location                                                            Location Label                   True lun_id          0x14000000000000                                    Logical Unit Number ID           False lun_reset_spt   yes                                                 LUN Reset Supported              True max_retry_delay 60                                                  Maximum Quiesce Time             True max_transfer    0x40000                                             Maximum TRANSFER Size            True node_name       0x50050768020000d2                                  FC Node Name                     False pvid            none                                                Physical volume identifier       False q_err           yes                                                 Use QERR bit                     True q_type          simple                                              Queuing TYPE                     True queue_depth     8                                                   Queue DEPTH                      True reassign_to     120                                                 REASSIGN time out value          True reserve_policy  single_path                                         Reserve Policy                   True rw_timeout      30                                                  READ/WRITE time out value        True scsi_id         0x10900                                             SCSI ID                          False start_timeout   60                                                  START unit time out value        True unique_id       3321360050768027F0001F00000000000016C04214503IBMfcp Unique device identifier         False ww_name         0x50050768022000d2                                  FC World Wide Name               False

We can use the below script to show all the UID of the luns on the AIX host

#!/usr/ksh for disk in $(lsdev -Cc disk|awk '{print $1}') do echo $disk: lsattr -EHl $disk -a unique_id echo --------------------------------------- done