I have the same problem with two Crucial 1TB M550s:
[ 4.094763] ata4.00: ATA-9: Crucial_CT1024M550SSD1, MU01, max UDMA/133
[ 4.095063] ata3.00: ATA-9: Crucial_CT1024M550SSD1, MU01, max UDMA/133
and have suffered data-loss in a RAID1 config that required a reinstall.
I also see the errors on my two other Intel SSDs:
[ 4.096849] ata2.00: ATA-9: INTEL SSDSC2BW120A4, DC32, max UDMA/133
[ 4.097088] ata1.00: ATA-9: INTEL SSDSC2BW120A4, DC32, max UDMA/133
however the Intel SSDs do not seem to have suffered data loss. A sample
error from syslog, on one of the Intel SSDs:
[1767684.772447] ata1.00: exception Emask 0x1 0 SAct 0x10 SErr 0x480100 action
0x6 frozen
[1767684.772456] ata1.00: irq_stat 0x08000000, interface fatal error
[1767684.772462] ata1: SError: { UnrecovData 10B8B Handshk }
[1767684.772469] ata1.00: failed command: WRITE FPDMA QUEUED
[1767684.772479] ata1.00: cmd 61/b0:20:a8:a0:bf/03:00:04:00:00/40 tag 4 ncq
483328 out
[1767684.772479] res 40/00:20:a8:a0:bf/00:00:04:00:00/40
Emask 0x10 (ATA bus error)
[1767684.772484] ata1.00: status: { DRDY }
[1767684.772492] ata1: hard resetting link
[1767685.088404] ata1: SATA link up 6.0 Gbps (SStatus 133 SControl 300)
[1767685.129320] ata1.00: configured for UDMA/133
[1767685.129339] ata1: EH complete
The motherboard is a Gigabyte H87N w/ SATA controller: Intel
Corporation 8 Series/C220 Series Chipset Family 6-port SATA Controller 1
[AHCI mode] (rev 05). The lspci is attached.
uname -rv: 3.13.0-39-generic #66-Ubuntu SMP Tue Oct 28 13:30:27 UTC 2014
lsb_release -d: Description: Ubuntu 14.04.1 LTS
Adding libata.force=noncq to
/etc/default/grub:GRUB_CMDLINE_LINUX_DEFAULT has stopped the errors for
the last 5-days, and there have been no spontaneous RAID1 resyncs.
** Attachment added: "lspci.txt"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1363462/+attachment/4264136/+files/lspci.txt
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https://bugs.launchpad.net/bugs/1363462
Title:
Crucial M550 1TB SSD missing from NCQ TRIM blacklist
Status in The Linux Kernel:
Unknown
Status in “linux” package in Ubuntu:
Incomplete
Bug description:
I own a Crucial/Micron M550 1TB SSD which does has data loss when using NCQ
TRIM.
The current Ubuntu Trusty kernel has a blacklist which matches all M550 SSDs
except the 1024 GB (1 TB) version because the matching pattern is limited to 3
digits for size. Upstream Linux has fixed this bug already:
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=2a13772a144d2956a7fedd18685921d0a9b8b783
Please try to get this merged and tell me where I can start an
installation with a fixed kernel so I won't have a corrupt disk
already on the end of the installation. Thanks!
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