On Thu, Aug 11, 2016 at 11:47:20AM -0400, D'Arcy J.M. Cain wrote: > On Thu, 11 Aug 2016 11:06:15 -0400 (EDT) > Derrick Lobo <derrick.l...@givex.com> wrote: > > No they are not setup as log file system > > > > /dev/dk1 /data_local ffs rw 2 1 > > /dev/dk0 /mnt ffs rw 3 1 > > > > Dk0 is the the nvme drive > > While dk1 is the ssd drive.. both are 2tb drives > > Given the /mnt entry I assume that this is a test system so go ahead > and change "rw" to "rw,log" and reboot. May as well change both and > test both. Make sure that your kernel has "options WAPBL". The > GENERIC one does.
Why? The writes to the SSD should be so fast that the overhead of double-writing the metadata, synchronizing the cache, etc. should considerably exceed any delay from synchronously writing the metadata once... I don't run with "log" on any of my SSD systems. Thor