ZFS I/O Error - unable to import/mount pool

[Aaron Hurt]

I have a rather small ZFS pool on a 7-STABLE machine composed of 4 disks 
in raidz-1.  One of the drives was giving me fits and acting flaky so I 
got a warranty replacement for it, however that drive as well as another 
both started giving DMA timeout/LBA write errors simultaneously 
lastnight.  I was able to bring the machine back up after it locked (no 
crash/panic it just locked up) and do a scrub to get the pool online.  I 
then powered down and disconnected the drive that was giving the 
majority of the errors.  When the system came back up it says the pool 
is faulted, re-attaching the disk I removed does not resolve the fault 
and the raidz mentions corrupt metadata.  I though I might be able to 
export/import the array but that also failed.  The array did export but 
now refuses to import saying I/O error.  If anyone could give me some 
insight on how I could get this pool back online just long enough to 
snag the data I would be really appreciative.  I will also be more than 
happy to provide any other detailed information you may need just let me 
know.

Thank You,

-- 
Aaron Hurt
Managing Partner
Flex I.T., LLC
611 Commerce Street
Suite 3117
Nashville, TN  37203
Phone: 615.438.7101
E-mail: aaron at goflexitllc.com