Thursday, April 1, 2010

Recover from a failed upgrade with ZFS

Working on my SPARC box, I came across some serious issues during the upgrade and must revert back to a previous boot environment (ZFS as the root file system). So I logged into ILOM service processor, sent a break to bring the system to the OK prompt, then specified the boot environment. Now I'm recovered from a failed upgrade. It's really cool!

-> set /HOST send_break_action=break
Set 'send_break_action' to 'break'

-> start /SP/console
Are you sure you want to start /SP/console (y/n)? y

Serial console started. To stop, type #.
Debugging requested; hardware watchdog suspended.
Type 'go' to resume

{0} ok boot disk -Z rpool/ROOT/snv_134

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