Cloud DevOps Admin Guide

Before making any changes, collect host logs to document the current configuration. At a minimum, save the following: inq, lsdev -Cc disk, lsdev -Cc adapter, lspv, and lsvg
Shutdown the application(s), unmount the file system(s), and varyoff all volume groups except for rootvg. Do not export the volume groups.

# varyoffvg

Check with lsvg -o (confirm that only rootvg is varied on)

If no PowerPath, skip all steps with power names.

For CLARiiON configuration, if Navisphere Agent is running, stop it:
# /etc/rc.agent stop

Remove paths from Powerpath configuration:
# powermt remove hba=all

Delete all hdiskpower devices:
# lsdev -Cc disk -Fname grep power xargs -n1 rmdev -dl

Remove the PowerPath driver instance:
# rmdev -dl powerpath0

Delete all hdisk devices:For Symmetrix devices, use this command:
# lsdev -CtSYMM* -Fname xargs -n1 rmdev -dl

For CLARiiON devices, use this command:
# lsdev -CtCLAR* -Fname xargs -n1 rmdev -dl

Confirm with lsdev -Cc disk that there are no EMC hdisks or hdiskpowers.
Remove all Fiber driver instances:
# rmdev -Rdl fscsiX(X being driver instance number, i.e. 0,1,2, etc.)

Verify through lsdev -Cc driver that there are no more fiber driver instances (fscsi).
Change the adapter instances in Defined state
# rmdev -l fcsX(X being adapter instance number, i.e. 0,1,2, etc.)

Create the hdisk entries for all EMC devices:
# emc_cfgmgror
# cfgmgr -vl fcsx(x being each adapter instance which was rebuilt).

Skip this part if no PowerPath.
Configure all EMC devices into PowerPath:
# powermt config

Check the system to see if it now displays correctly:
# powermt display
# powermt display dev=all
# lsdev -Cc disk
# /etc/rc.agent start