> Did you try with -f?  I doubt it will help.
Yep, no luck with -f, -F or -fF. 

> > * If replace 1TB dead disk with a blank disk, might
> the import work?
> 
> Only if the import is failing because the dead disk
> is nonresponsive in a way that makes the import hang.
> Otherwise, you'd import the pool first then replace the drive.
That's what I thought. The bad disk isn't recognized by the SATA card BIOS, so 
it's not half-gone...it's totally missing (also tried with disk removed, no 
difference).

> If you have auto-snapshots of your running BE (/etc) from before the import,
> that should work fine. Note that you can pass import an argument
> "-c cachefile" so you don't have to interfere with the current system one.
> 
> You'd have to do this on the original system, I think.
Just checked and didn't have automatic snapshots/time slider enabled.  My rpool 
only has an initial snapshot from install, and sadly I didn't have these four 
disks attached at that point.  And naturally I don't have any backups. FML.

> The logic is that the cachefile contains copies of the labels of the missing
> devices, and can substitute for the devices themselves when importing a
> degradedd pool (typically at boot).
> 
> This is useful enough that i'd like to see some of the reserved area
> between the on-disk labels and the first metaslab on each disk, used
> to store a copy of the cache file / same data.  That way every pool
> member has the information about other members necessary to import a
> degraded pool.   Even if it had to be extracted first with zdb to be
> used as a separate zpool.cache as above, it would be helpful for this
> scenario. 
Yeah, I'd totally give up another 256KB/disk or whatever to make a degraded 
array easier to import.  Anyone know if there's an RFE for this?

I may have a disk lying around from a previous OpenSolaris install or from 
Linux ZFS-FUSE where this zpool was originally created.  Maybe I'll get lucky 
and find an old zpool.cache to try.

Any other ideas? (Besides the obvious 'BACKUP YOUR F**KING /ETC ONCE IN A 
WHILE!')
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