Comment 27 for bug 1259829

I dont see these error message with 3.12 kernel, or if I boot with ncq disabled.

 $ echo 1 > /sys/block/sda/device/queue_depth

Additionally, fstrim seems to return the same upon reboot

first run
# fstrim -v /
/: 920118112256 bytes were trimmed

second run ( after reboot )
/: 920175951872 bytes were trimmed

third run (after reboot)
 fstrim -v /boot/
/boot/: 75911168 bytes were trimmed
root@K43SA:/home/ritesh# fstrim -v /
/: 920183271424 bytes were trimmed

fstrim does claim 0 bytes to trim, after each subsequent run

__self:
http://askubuntu.com/questions/133946/are-these-sata-errors-dangerous/133960#133960
https://bbs.archlinux.org/viewtopic.php?id=147189
http://www.itechlounge.net/2013/07/linux-ata-failed-command-read-fpdma-queued/
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1094446