29.07.2012, 17:00, "Stefan Johansson" <steve.johans...@telia.com>: > Hello! > > I have a HP 3080X SAS/SATA 8 port mpt(4) controller card that I want to use in > a ZFS setup. > My problem is that the write cache is not enabled on disks that are not a > part of a RAID volume (RAID0 or RAID1). > The write speed is limited to about 20MB/s with both UFS and ZFS. > If I create a RAID0 volume with mptutil(8) and then destroy it, write cache > gets enabled and the write speed reaches about 60MB/s with UFS and ZFS. > Unfortunately it won't survive a reboot. > > Has anyone else seen this problem with mpt(4) controllers and/or knows how to > fix it?
I have to create 8 raid0 volumes consisting of one drive, and then enable #/usr/sbin/mptutil volume cache 0 enable #/usr/sbin/mptutil volume cache 1 enable _______________________________________________ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org"
