Could anyone give me some possible problems that would have created the following scenario? Testing the conversion of a ZFS Pool on a hardware mirror to that same ZFS Pool using ZFS mirroring, by breaking the mirror, attaching the 2nd disk to the pool... bash-3.00# zpool scrub zpool02 bash-3.00# zpool status pool: zpool02 state: ONLINE scrub: scrub in progress, 14.70% done, 0h0m to go config: NAME STATE READ WRITE CKSUM zpool02 ONLINE 0 0 0 c1t2d0 ONLINE 0 0 0 errors: No known data errors bash-3.00# zpool status pool: zpool02 state: ONLINE scrub: scrub completed with 0 errors on Mon Aug 13 13:27:19 2007 config: NAME STATE READ WRITE CKSUM zpool02 ONLINE 0 0 0 c1t2d0 ONLINE 0 0 0 errors: No known data errors ...Reboot here, goto LSI Logic Controller BIOS and break mirror... bash-3.00# zpool attach zpool02 c1t2d0 c1t3d0 bash-3.00# zpool status pool: zpool02 state: ONLINE status: One or more devices is currently being resilvered. The pool will continue to function, possibly in a degraded state. action: Wait for the resilver to complete. scrub: resilver in progress, 1.33% done, 0h6m to go config: NAME STATE READ WRITE CKSUM zpool02 ONLINE 0 0 0 mirror ONLINE 0 0 0 c1t2d0 ONLINE 0 0 0 c1t3d0 ONLINE 0 0 0 errors: No known data errors bash-3.00# zpool status pool: zpool02 state: ONLINE scrub: resilver completed with 0 errors on Mon Aug 13 13:39:02 2007 config: NAME STATE READ WRITE CKSUM zpool02 ONLINE 0 0 0 mirror ONLINE 0 0 0 c1t2d0 ONLINE 0 0 0 c1t3d0 ONLINE 0 0 0 errors: No known data errors bash-3.00# zpool scrub zpool02 bash-3.00# zpool status pool: zpool02 state: ONLINE scrub: scrub completed with 0 errors on Mon Aug 13 13:40:02 2007 config: NAME STATE READ WRITE CKSUM zpool02 ONLINE 0 0 0 mirror ONLINE 0 0 0 c1t2d0 ONLINE 0 0 0 c1t3d0 ONLINE 0 0 0 errors: No known data errors bash-3.00# zpool export zpool02 bash-3.00# zpool status no pools available bash-3.00# zpool import pool: zpool02 id: 8492325208725543806 state: FAULTED action: The pool cannot be imported due to damaged devices or data. config: zpool02 UNAVAIL insufficient replicas mirror UNAVAIL corrupted data c1t2d0 ONLINE c1t3d0 ONLINE bash-3.00# uname -a SunOS sandbox01 5.10 Generic_118855-36 i86pc i386 i86pc Simply put I was just trying to export and import for giggles, I didn''t imagine it would cause problems. There was some desire to change the pool name, but that was cosmetic and I didn''t actually try it at the point where the fault happened. The pool had 1 zfs filesystem - /opt containing all the Solaris Software Collection CD packages...meaning nothing important, but enough junk to take up a descent chunk of space. Do I have any alternatives here other than to forcefully recreate the pool, reinstall the software and go through the process again? -- Sean