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Diffstat (limited to 'UPDATING')
-rw-r--r-- | UPDATING | 27 |
1 files changed, 27 insertions, 0 deletions
@@ -31,6 +31,33 @@ NOTE TO PEOPLE WHO THINK THAT FreeBSD 11.x IS SLOW: disable the most expensive debugging functionality run "ln -s 'abort:false,junk:false' /etc/malloc.conf".) +20160414: + The CAM I/O scheduler has been committed to the kernel. There should be + no user visible impact. This does enable NCQ Trim on ada SSDs. While the + list of known rogues that claim support for this but actually corrupt + data is believed to be complete, be on the lookout for data + corruption. The known rogue list is believed to be complete: + + o Crucial MX100, M550 drives with MU01 firmware. + o Micron M510 and M550 drives with MU01 firmware. + o Micron M500 prior to MU07 firmware + o Samsung 830, 840, and 850 all firmwares + o FCCT M500 all firmwares + + Crucial has firmware http://www.crucial.com/usa/en/support-ssd-firmware + with working NCQ TRIM. For Micron branded drives, see your sales rep for + updated firmware. Black listed drives will work correctly because these + drives work correctly so long as no NCQ TRIMs are sent to them. Given + this list is the same as found in Linux, it's believed there are no + other rogues in the market place. All other models from the above + vendors work. + + To be safe, if you are at all concerned, you can quirk each of your + drives to prevent NCQ from being sent by setting: + kern.cam.ada.X.quirks="0x2" + in loader.conf. If the drive requires the 4k sector quirk, set the + quirks entry to 0x3. + 20160330: The FAST_DEPEND build option has been removed and its functionality is now the one true way. The old mkdep(1) style of 'make depend' has |