On Wed, February 11, 2009 02:33, Eric D. Mudama wrote:
BTW, funky/busted bridge hardware in external USB devices don't count.
They do for me; I'm currently using external USB drives for my backup
datasets (in the process of converting to use zfs send/recv to get the
data there). My normal procedure even involves yanking the USB cables (in
theory long after the backup is completed and the pool is exported, but if
the script fails/hangs I might well yank the cable in the morning without
verifying the results of the script overnight first).
I'm more interested in major rotating drive vendors... Seagate/Maxtor,
WD, Hitachi/IBM, Fujitsu, Toshiba, etc.
There are a larger set of disaster modes if the problem is at that level,
of course. I'd really like to see a reasonably cook-book disk
qualification procedure that could detect these problems. Might have to
involve a timed disconnect of some sort, which might require hot-swap
hardware, but that's something one could live with. And if the
qualification procedure were widely believed to be good, aggregating
results would be useful.