09-03-2015
I've successfully booted from it just by recreating the zpool from the detached volume. it's already got the boot block in it because it was part of the root pool.
---------- Post updated at 09:44 AM ---------- Previous update was at 09:40 AM ----------
so the basic procedure here is to detach the second volume. proceed with your patching and then if you want to recover, destroy the zpool with the remaining volume, and do a zpool import to rebuild the zpool from the detached volume.
If you reattach it... it will sync the bad data over the good. Which isn't really what you want unless you intend to destroy the reserved copy.
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LEARN ABOUT OPENSOLARIS
zdb
zdb(1M) System Administration Commands zdb(1M)
NAME
zdb - ZFS debugger
SYNOPSIS
zdb pool
DESCRIPTION
The zdb command is used by support engineers to diagnose failures and gather statistics. Since the ZFS file system is always consistent on
disk and is self-repairing, zdb should only be run under the direction by a support engineer.
If no arguments are specified, zdb, performs basic consistency checks on the pool and associated datasets, and report any problems
detected.
Any options supported by this command are internal to Sun and subject to change at any time.
EXIT STATUS
The following exit values are returned:
0 The pool is consistent.
1 An error was detected.
2 Invalid command line options were specified.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWzfsu |
+-----------------------------+-----------------------------+
|Interface Stability |Unstable |
+-----------------------------+-----------------------------+
SEE ALSO
zfs(1M), zpool(1M), attributes(5)
SunOS 5.11 31 Oct 2005 zdb(1M)