On Wed, Jan 14, 2009 at 20:03, Tim <t...@tcsac.net> wrote: > > > On Tue, Jan 13, 2009 at 6:26 AM, Brian Wilson <bfwil...@doit.wisc.edu> > wrote: >> >> Does creating ZFS pools on multiple partitions on the same physical drive >> still run into the performance and other issues that putting pools in slices >> does? > > > Is zfs going to own the whole drive or not? The *issue* is that zfs will > not use the drive cache if it doesn't own the whole disk since it won't know > whether or not it should be flushing cache at any given point in time.
ZFS will always flush the disk cache at appropriate times. If ZFS thinks that is alone it will turn the write cache on the disk on. > > It could cause corruption if you had UFS and zfs on the same disk. It is safe to have UFS and ZFS on the same disk and it has always been safe. Write cache on the disk is not safe for UFS, that is why zfs will turn it on only if it is alone. _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
