On Apr 2, 2014, at 1:38 PM, Daniel Becker <razzf...@gmail.com> wrote:
> The only time this should make a difference is when your host experiences an
> unclean shutdown / reset / crash.
> On Apr 2, 2014, at 8:49 AM, Eric <naisa...@gmail.com> wrote:
Not true. ZFS flushes also mark known states. If the zfs stack issues a flush
and the system returns, it uses that as a guarantee that that data is now on
disk. later writes will assume that the data was written and if the hard drive
later changes the write order (which some disks will do for performance) things
break. You can have issues if any part of the disk chain lies about the
completion of flush commands.
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