Thanks to Kyle, richard and Eric

In dealing with this problem, I realize now that I could have
saved myself a lot of grief if I had simply used the  replace  
command and substituted some other drive for my flash
drive before I removed it

I think that this point is critical for anyone who finds themselves
experimenting with separate ZILs ... since a pool will continue to
function with no obvious problems after a separate ZIL is removed,
it's easy to think that, while the benefit of a separate ZIL is gone, the
pool drives have picked up the ZIL function and all is well with the world

the sad reality comes when a reboot or export of the pool occurs
and there is then no way to re-import the pool without re-inserting
the missing ZIL device, and if the missing ZIL device is no longer 
available, the pool is inaccessible ... it's too late now to  do a replace,
because the pool must be imported to do anything ... all the data in
your pool is perfect, but it's perfectly out of reach

... Bill
 
 
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