I was doing some experimentation of my own, using SCSI attached JBOD.
I built a test zpool spanning 7 drives (raidz) on S10U2. The 7 disks were
split between 3 controllers.
I then started replacing the 18GB drives with 36GB drives, one at a time, and
watched it rebuild the zpool, growing as it did.
Finally, when I had all the drives replaced, I took the system down, moved the
drives around on the controllers, reloaded the OS onto the internal drives on
my Sun Blade 1000 workstation. I then forced a write of random data to one of
the drives in the 7 disk raidz array. Then I did the zpool import - it
reported the array, with errors. I did the zpool import <pool name>, and it
came right in, and mounted up. From there I did a scrub (and yes, it did
essentially chew up all available system resources, while it scrubbed the
200+GB pool on this small and not so mighty system), and it corrected all the
issues.
All in all it was a good test, and I was rather impressed that it was able to
juggle re-ordering of the drives, re-enumeration of the controllers they were
attached to, erasure of one of the drives, all while importing the pool on a
rebuilt system.
Nice work!
Message was edited by:
guyverdh
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