Hp/Ux Procedure - HP AA979A - StorageWorks SAN Switch 2/8V Administrator's Manual

Example
switch:admin> switchdisable
switch:admin> configure
Configure...
Fabric parameters (yes, y, no, n): [no] yes
Domain: (1..239) [1]
R_A_TOV: (4000..120000) [10000]
E_D_TOV: (1000..5000) [2000]
Data field size: (256..2112) [2112]
Sequence Level Switching: (0..1) [0]
Disable Device Probing: (0..1) [0]
Suppress Class F Traffic: (0..1) [0]
SYNC IO mode: (0..1) [0]
Core Switch PID Format: (0..2) [0] 1
Per-frame Route Priority: (0..1) [0]
Long Distance Fabric: (0..1) [0]
BB credit: (1..27) [16]
10. After all switches are updated to use the new PID format and re-enabled, verify that the fabric has fully
reconverged (each switch "sees" the other switches).
1 1. Enter cfgEnable [active_zoning_config] on one of the switches in the fabric to update
zoning to use the new PID form.
This does not change the definition of zones in the fabric, but merely causes the lowest level tables in
the zoning database to be updated with the new PID format setting. It is only necessary to do this once
per fabric; the zoning update automatically propagates to all switches.
At this point, all switches in the fabric are operating in the new addressing mode.

HP/UX procedure

This procedure is not intended to be comprehensive. It provides a starting point from which a SAN
administrator could 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/fabric to be updated.
3. If you are not using multipathing software, unmount the volumes from their mount points using umount.
The proper usage would be umount <mount_point>. For example:
umount /mnt/jbod
4. If you are using multipathing software, use that software to remove one fabric's devices from its
configuration.
5. Deactivate the appropriate volume groups using vgchange. The proper usage would be
vgchange –a n <path_to_volume_group>. For example:
vgchange –a n /dev/jbod
6. Make a backup copy of the volume group Directory using tar from within /dev. For example:
tar –cf /tmp/jbod.tar jbod
Export the volume group using vgexport. The proper usage would be
7.
vgexport –m <mapfile> <path_to_volume_group>. For example:
vgexport –m /tmp/jbod_map /dev/jbod
8. Connect to each switch in the fabric
9. Issue the switchDisable command.
10. Issue the configure command and change the Core Switch PID Format to 1.
1 1. Issue the command cfgEnable [effective_zone_configuration]. For example:
cfgEnable my_zones
12. Issue the switchEnable command. Enable the core switches first, then the edges.
13. Clean the lvmtab file by using the command vgscan.
394 Configuring the PID format