i have a machine with a disk that has some sort of defect and i've found that 
if i partition only half of the disk that the machine will still work.  i tried 
to use 'format' to scan the disk and find the bad blocks, but it didn't work.

so as i don't know where the bad blocks are but i'd still like to use some of 
the rest of the disk, i thought ZFS might be able to help.  i partitioned the 
disk so slices 4,5,6 and 7 are each 5GB.  i thought i'd make one or multiple 
zpools on those slices and then i'd be able to narrow down where the bad 
sections are.

so my question is can i declare a zpool that spans multiple c0d0sXX but isn't a 
mirror and if i can, then will zfs be able to detect where the problem c0d0sXX 
is and not use it?  if not, i'll have to make 4 different zpools and experiment 
with storing stuff on each to find the approximate location of the bad blocks.
 
 
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