This is just copy from original article at:
http://www.vmguru.nl/wordpress/2010/03/resetting-the-grpadmin-password-on-a-dell-equallogic-san/
If you really don’t know the password set on the grpadmin but still
have physical access to it you can start a recovery procedure to reset
the grpadmin account back to the default password: grpadmin.
Important: Because you must power-cycle one
group member as part of the password reset procedure, volumes with data
stored on that member will be unavailable and active iSCSI connections
to those volumes will be lost until the member is restarted. You may
want to warn users of any impending offline volumes and iSCSI
disconnections before resetting the password.
To temporarily reset the grpadmin account password to the default factory-set password, follow these steps:
1.) On one group member, connect the appropriate
serial cable to serial port 0 (the correct cable will be different on
different models of the PS Array) on the active control module. The
active control module is indicated by the green control module status
LED labeled ACT. The status LEDs are located on the controllers
sometimes on the left side or next to the serial port on other
controllers.
2.) Turn off power to the member (if you have dual
power supplies, turn off both power supplies). Volumes with data located
on the member will be offline and iSCSI connections to those volumes
will be lost until the member is restarted.
3.) If the member has two control modules, after it
is shut down, remove the controller that your serial cable is not
connected to. This is to ensure that, while you are setting
password-recovery mode on one controller, the other controller doesn’t
run past us and start the array up. Controllers just have to be removed
a little so they don’t make contact any more to be disabled. (2 cm out
is far enough)
4.) Turn on power to the member by turning on all the power supplies.
5.) While the member is restarting, press Ctrl/p
when the following message appears on the console: Press Ctrl/p to enter
setup mode. This will halt the boot process and allow you to enter
commands to the boot monitor.
6.) At the CFE> prompt, enter the following commands, which are case-sensitive and must be typed exactly as shown:
CFE>
setenv RESETPASSWORD 1
CFE>
reload
7.) When the member restarts, the PeerStorage login
prompt appears. After a short pause, the following message should
appear: WARNING:Password recovery mode… Temporarily resetting grpadmin
password.
If you get the previous message, log in the the group using the grpadmin account and its factory-set password, grpadmin:
Login: grpadmin
Password: grpadmin
At this point, you are logged in to the group with read-write
permission and can perform any group administration task. At this point,
you should set the grpadmin account password to a known value. Use the
procedure described in the Modifying Accounts section in the Group
Administration manual or use the following command:
>
account select grpadmin passwd
Enter New Password: xxxxxxx
Retype password: xxxxxxx
Note: Unless you set the grpadmin account password within five
minutes after the password recovery mode message appears, the grpadmin
password will revert back to the value it had prior to the password
reset procedure (that is, you will no longer be able to log in with the
factory-set password).
However, as long as you remain logged in to the grpadmin account, you
can set the password to a known value. If the password recovery mode
message does not appear, the password reset procedure did not succeed
(for example, because you did not enter the CFE commands exactly as
shown). In this case, allow the member to completely start up, and then
retry the password reset procedure, shutting down the member and
following the steps above.
8.) If the member has two control modules, after
logging in to the group and setting the grpadmin password, reinsert the
second controller, this restarts the secondary control module and
allows it to be used. Within one minute, you should see a console
message, indicating that the secondary control module is operational.
