One of the things I said before about ZFS in Linux boilsdown to that it's a lot of hard work to get outside code into the Linuxkernel. This has an important corollary.

This sort of hard work, of modifying foreign code so that it fits intothe Linux kernel, takes people who are pretty skilled Linux kernelprogrammers. These people are skilled enough to have a choice of whatto do, so they can either work on the tedious grinding job of adoptingother people's code into the

Suppose that you have a ZFS pool with redundancy (mirroring or ZFS'sversion of RAID 5 or RAID 6), and that someday you run ' zpool status 'and see the alarming output:

status: One or more devices has experienced an unrecoverable error. Anattempt was made to correct the error. Applications are unaffected.

action: Determine if the device needs to be replaced, and clear theerrors using 'zpool clear' or replace the device with 'zpool replace'.

(This has been re-