Miles Nordin wrote:
"re" == Richard Elling <richard.ell...@gmail.com> writes:
How do you handle the case when a hotplug SATA drive is powered off
unexpectedly with data in its write cache? Do you replay the writes,
or do they go down the ZFS hotplug write hole?
If zfs never got a positive response to a cache flush, that data is
still in memory and will be re-written. Unless I greatly misunderstand
how ZFS works...
If the drive _lies_ about a cache flush, you're screwed (well, you can
probably roll back a few TXGs...). Don't buy broken drives / bridge
chipsets.
--
Carson
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