>I have a desktop system with 2 ZFS mirrors. One drive in one mirror is
>starting to produce read errors and slowing things down dramatically. I
>detached it and the system is running fine. I can't tell which drive it is
>though! The error message and format command let me know which pair the bad
>drive is in, but I don't know how to get any more info than that like the
>serial number etc. to know which disk it is. Is there a command to do this?
>All it shows is a 500G WD drive producing read errors and format shows
>identical info for both of the 500G WD drives.

Did you try:

        iostat -En

messages in /var/adm/messages perhaps?  They should include the path
to the disk in error.


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