On Sat, Mar 9, 2013 at 12:26 AM, Brad Campbell <lists2009@xxxxxxxxxxxxxxx> wrote: > > I'd be interested if you could test it against 3.7.9. > > I have a 6 drive RAID10. 3 Drives are on the on-board AHCI, and the other > three are on an LSI 9240-8i (SAS2008 with mpt2sas module). > > TRIM is being passed down the stack as after an fstrim of the ext4 fs on the > RAID the mismatch count goes through the roof. > > The 3 drives on the LSI are Intel 330 (which support deterministic read > after trim) while the drives on the AHCI are Samsung 830 (which are *not* > deterministic after trim). > > My raid is 6 drives in an n2 configuration, so three pairs of mirrors. Each > one a Samsung and an Intel. > While I set this up could you let me know what you have in the following sys files? /sys/block/[mddevice]/discard_alignment /sys/block/[mddevice]/queue/discard_granularity /sys/block/[mddevice]/queue/discard_max_bytes Also what chunk size is your array set to? Dave Cundiff System Administrator A2Hosting, Inc http://www.a2hosting.com -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
