HP Brocade 4Gb SAN Switch for HP BladeSystem p-Class - Manual (Page 216)

216 Configuring the PID format
17. If you are not using multipathing software, mount all devices again and restart I/O. For example:
mount /mnt/jbod
18. If you are using multipathing software, reenable the affected path. The preceding steps do not clean
up the results from ioscan. When viewing the output of ioscan, notice the that the original entry is still
there, but now has a status of NO_HW.
19. To remove the original (outdated) entry, use the
rmsf
(remove special file) command. The format for
this command is
rmsf –a –v path_to_device
. For example:
rmsf –a –v /dev/dsk/c65t8d0
20. Validate that the entry has been removed by issuing the
ioscan –funC disk
command. In the
following example, the NO_HW entry is no longer listed:
21. Repeat for all fabrics.
22. Issue the
switchEnable
command. Enable the core switches first, then the edges.
AIX procedure
This procedure is not intended to be comprehensive. It provides a starting point from which a SAN
administrator can develop a site-specific procedure for a device that binds automatically by PID, and
cannot be rebooted due to uptime requirements.
1. Backup all data. Verify backups.
2. If you are not using multipathing software, stop all I/O going to all volumes connected through the
switch or fabric to be updated.
3. If you are not using multipathing software, varyoff the volume groups. The command format is
varyoffvg volume_group_name
. For example:
varyoffvg datavg
4. If you are not using multipathing software, unmount the volumes from their mount points using umount.
The command format is
umount mount_point
. For example:
umount /mnt/jbod
5. If you are using multipathing software, use that software to remove one fabric’s devices from its
configuration.
# ioscan -funC disk
Class
I H/W Path Driver S/W State H/W Type Description
-------------------------------------------------------------------------------------
disk
0 0/0/1/1.2.0 adisk CLAIMED DEVICE SEAGATE ST39204LC
/dev/dsk/clt2d0 /dev/rdsk/c1t2d0
disk 1 0/0/2/1.2.0 adisk CLAIMED DEVICE HP DVD-ROM 304
/dev/dsk/c3t2d0 /dev/rdsk/c3t2d0
disk 319 0/4/0/0.1.2.255.14.8.0 adisk CLAIMED DEVICE SEAGATE ST336605FC
/dev/dsk/c64t8d0 /dev/rdsk/c64t8d0
disk 320 0/4/0/0.1.18.255.14.8.0 adisk NO_HW DEVICE SEAGATE ST336605FC
/dev/dsk/c65t8d0 /dev/rdsk/c65t8d0
het46 (HP-50001)> ioscan -funC disk
Class
I H/W Path Driver S/W State H/W Type Description
-------------------------------------------------------------------------------------
disk
0 0/0/1/1.2.0 adisk CLAIMED DEVICE SEAGATE ST39204LC
/dev/dsk/clt2d0 /dev/rdsk/c1t2d0
disk 1 0/0/2/1.2.0 adisk CLAIMED DEVICE HP DVD-ROM 304
/dev/dsk/c3t2d0 /dev/rdsk/c3t2d0
disk 319 0/4/0/0.1.2.255.14.8.0 adisk CLAIMED DEVICE SEAGATE ST336605FC
/dev/dsk/c64t8d0 /dev/rdsk/c64t8d0