IBM Storwize V7000 Unified Problem Determination Manual page 282

3. Log in to the management CLI as admin.
4. To boot the Grub boot loader into single-user mode:
5. From the root shell, type passwd.
6. Reboot the file module to normal mode. Issue the following command:
7. Go back to the management CLI to resume the file module back in to the GPFS
8. From the KVM where you logged on as root, use the chrootpwd command to
Results
The chrootpwd program prompts you for the new root password.
The chrootpwd program sets the new root password on both file modules in the
cluster.
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Storwize V7000 Unified: Problem Determination Guide 2073-720
a. Issue the stopcluster command so that you can reboot it in single-user
mode.
stopcluster --node mgmt001st001 --restart
a. Watch out for the Grub boot screen on the KVM and select the kernel on
the screen.
b. Press the e key to edit the entry.
c. Select the second line, the line that starts with the word kernel.
d. Press the e key to edit the kernel entry to append single-user mode.
e. Append the letter S or word Single to the end of the kernel line.
The following screen is an example.
[ Minimal BASH-like line editing is supported. For the first word, TAB
lists possible command completions. Anywhere else TAB lists the possible
completions of a device/filename. ESC at any time exits. ]
grub edit> kernel /boot/vmlinuz-2.6.15-1-686 root=/dev/sda1 ro Single_
f. Press the Enter key.
The passwd program prompts you for the new root password. This root
password changes at the end of the procedure.
shutdown -fr now
a. Wait until the KVM goes past the Grub screen this time and log in when
you are prompted to log in.
b. Log in as root with the new password on the KVM.
cluster.
a. Add the mgmt001st001 file module back to the system. Issue the following
command:
resumenode mgmt001st001
b. Wait until the lsnode command shows that there are 2 online nodes in the
cluster.
change the root password on both file modules.