I suspected that my brand new Samsung 840 SSD might be faulty. I used smartctl to perform short and long tests. Both tests revealed no errors. SMART data showed no indication of any error either.
Then I discoved this in my /var/log/syslog:
Code: Select all
[ 5.129959] ata1: SATA link up 6.0 Gbps (SStatus 133 SControl 300)
[ 5.130808] ata1.00: ACPI cmd ef/10:06:00:00:00:00 (SET FEATURES) succeeded
[ 5.130814] ata1.00: ACPI cmd f5/00:00:00:00:00:00 (SECURITY FREEZE LOCK) filtered out
[ 5.130818] ata1.00: ACPI cmd b1/c1:00:00:00:00:00 (DEVICE CONFIGURATION OVERLAY) filtered out
[ 5.131075] ata1.00: ATA-9: Samsung SSD 840 PRO Series, DXM04B0Q, max UDMA/133
[ 5.131080] ata1.00: 250069680 sectors, multi 16: LBA48 NCQ (depth 31/32), AA
[ 5.131467] ata1.00: ACPI cmd ef/10:06:00:00:00:00 (SET FEATURES) succeeded
[ 5.131473] ata1.00: ACPI cmd f5/00:00:00:00:00:00 (SECURITY FREEZE LOCK) filtered out
[ 5.131476] ata1.00: ACPI cmd b1/c1:00:00:00:00:00 (DEVICE CONFIGURATION OVERLAY) filtered out
[ 5.131774] ata1.00: configured for UDMA/133
[ 5.131992] scsi 0:0:0:0: Direct-Access ATA Samsung SSD 840 DXM0 PQ: 0 ANSI: 5
[ 5.132106] sd 0:0:0:0: Attached scsi generic sg0 type 0
[ 5.132109] sd 0:0:0:0: [sda] 250069680 512-byte logical blocks: (128 GB/119 GiB)
[ 5.132153] sd 0:0:0:0: [sda] Write Protect is off
[ 5.132157] sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00
[ 5.132193] sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[ 5.132672] sda: sda1 sda2 < sda5 >
[ 5.132997] sd 0:0:0:0: [sda] Attached SCSI disk
[ 5.139775] ata1.00: exception Emask 0x10 SAct 0x1 SErr 0x280100 action 0x6 frozen
[ 5.139780] ata1.00: irq_stat 0x08000000, interface fatal error
[ 5.139783] ata1: SError: { UnrecovData 10B8B BadCRC }
[ 5.139796] ata1.00: failed command: READ FPDMA QUEUED
[ 5.139799] ata1.00: cmd 60/08:00:88:01:00/00:00:00:00:00/40 tag 0 ncq 4096 in
[ 5.139799] res 40/00:00:88:01:00/00:00:00:00:00/40 Emask 0x10 (ATA bus error)
[ 5.139801] ata1.00: status: { DRDY }
[ 5.139804] ata1: hard resetting link
[ 5.457471] ata1: SATA link up 6.0 Gbps (SStatus 133 SControl 300)
[ 5.458312] ata1.00: ACPI cmd ef/10:06:00:00:00:00 (SET FEATURES) succeeded
[ 5.458318] ata1.00: ACPI cmd f5/00:00:00:00:00:00 (SECURITY FREEZE LOCK) filtered out
[ 5.458322] ata1.00: ACPI cmd b1/c1:00:00:00:00:00 (DEVICE CONFIGURATION OVERLAY) filtered out
[ 5.458967] ata1.00: ACPI cmd ef/10:06:00:00:00:00 (SET FEATURES) succeeded
[ 5.458973] ata1.00: ACPI cmd f5/00:00:00:00:00:00 (SECURITY FREEZE LOCK) filtered out
[ 5.458977] ata1.00: ACPI cmd b1/c1:00:00:00:00:00 (DEVICE CONFIGURATION OVERLAY) filtered out
[ 5.459275] ata1.00: configured for UDMA/133
[ 5.459286] ata1: EH complete
[ 5.460467] ata1.00: exception Emask 0x10 SAct 0x1 SErr 0x280100 action 0x6 frozen
[ 5.460471] ata1.00: irq_stat 0x08000000, interface fatal error
[ 5.460474] ata1: SError: { UnrecovData 10B8B BadCRC }
[ 5.460477] ata1.00: failed command: READ FPDMA QUEUED
[ 5.460483] ata1.00: cmd 60/08:00:30:03:00/00:00:00:00:00/40 tag 0 ncq 4096 in
[ 5.460483] res 40/00:00:30:03:00/00:00:00:00:00/40 Emask 0x10 (ATA bus error)
[ 5.460486] ata1.00: status: { DRDY }
[ 5.460499] ata1: hard resetting link
[ 5.776995] ata1: SATA link up 6.0 Gbps (SStatus 133 SControl 300)
[ 5.777837] ata1.00: ACPI cmd ef/10:06:00:00:00:00 (SET FEATURES) succeeded
[ 5.777843] ata1.00: ACPI cmd f5/00:00:00:00:00:00 (SECURITY FREEZE LOCK) filtered out
[ 5.777846] ata1.00: ACPI cmd b1/c1:00:00:00:00:00 (DEVICE CONFIGURATION OVERLAY) filtered out
[ 5.778499] ata1.00: ACPI cmd ef/10:06:00:00:00:00 (SET FEATURES) succeeded
[ 5.778505] ata1.00: ACPI cmd f5/00:00:00:00:00:00 (SECURITY FREEZE LOCK) filtered out
[ 5.778508] ata1.00: ACPI cmd b1/c1:00:00:00:00:00 (DEVICE CONFIGURATION OVERLAY) filtered out
[ 5.778807] ata1.00: configured for UDMA/133
[ 5.778818] ata1: EH complete
[ 5.784413] ata1.00: exception Emask 0x10 SAct 0x2 SErr 0x280100 action 0x6 frozen
[ 5.784416] ata1.00: irq_stat 0x08000000, interface fatal error
[ 5.784419] ata1: SError: { UnrecovData 10B8B BadCRC }
[ 5.784421] ata1.00: failed command: READ FPDMA QUEUED
[ 5.784424] ata1.00: cmd 60/08:08:18:81:eb/00:00:0d:00:00/40 tag 1 ncq 4096 in
[ 5.784424] res 40/00:08:18:81:eb/00:00:0d:00:00/40 Emask 0x10 (ATA bus error)
[ 5.784426] ata1.00: status: { DRDY }
[ 5.784429] ata1: hard resetting link
[ 6.100513] ata1: SATA link up 6.0 Gbps (SStatus 133 SControl 300)
[ 6.101354] ata1.00: ACPI cmd ef/10:06:00:00:00:00 (SET FEATURES) succeeded
[ 6.101357] ata1.00: ACPI cmd f5/00:00:00:00:00:00 (SECURITY FREEZE LOCK) filtered out
[ 6.101359] ata1.00: ACPI cmd b1/c1:00:00:00:00:00 (DEVICE CONFIGURATION OVERLAY) filtered out
[ 6.102005] ata1.00: ACPI cmd ef/10:06:00:00:00:00 (SET FEATURES) succeeded
[ 6.102011] ata1.00: ACPI cmd f5/00:00:00:00:00:00 (SECURITY FREEZE LOCK) filtered out
[ 6.102015] ata1.00: ACPI cmd b1/c1:00:00:00:00:00 (DEVICE CONFIGURATION OVERLAY) filtered out
[ 6.102312] ata1.00: configured for UDMA/133
[ 6.102324] ata1: EH complete
[ 8.269996] xor: automatically using best checksumming function:
[ 8.309191] avx : 17157.000 MB/sec
[ 8.309516] device-mapper: dm-raid45: initialized v0.2594b
[ 8.326696] Btrfs loaded
[ 8.333424] EXT4-fs (sda1): INFO: recovery required on readonly filesystem
[ 8.333427] EXT4-fs (sda1): write access will be enabled during recovery
[ 8.383839] EXT4-fs (sda1): recovery complete
[ 8.385328] EXT4-fs (sda1): mounted filesystem with ordered data mode. Opts: (null)
[ 8.444364] ata1: limiting SATA link speed to 3.0 Gbps
[ 8.444368] ata1.00: exception Emask 0x10 SAct 0x7ffffffc SErr 0x280100 action 0x6 frozen
[ 8.444370] ata1.00: irq_stat 0x08000000, interface fatal error
[ 8.444372] ata1: SError: { UnrecovData 10B8B BadCRC }
[ 8.444374] ata1.00: failed command: READ FPDMA QUEUED
[ 8.444378] ata1.00: cmd 60/08:10:20:09:80/00:00:01:00:00/40 tag 2 ncq 4096 in
[ 8.444378] res 40/00:e8:00:0a:80/00:00:01:00:00/40 Emask 0x10 (ATA bus error)
[ 8.444380] ata1.00: status: { DRDY }
[ 8.444381] ata1.00: failed command: READ FPDMA QUEUED
[ 8.444384] ata1.00: cmd 60/08:18:30:09:80/00:00:01:00:00/40 tag 3 ncq 4096 in
[ 8.444384] res 40/00:e8:00:0a:80/00:00:01:00:00/40 Emask 0x10 (ATA bus error)
[ 8.444386] ata1.00: status: { DRDY }
[ 8.444387] ata1.00: failed command: READ FPDMA QUEUED
[ 8.444390] ata1.00: cmd 60/08:20:38:09:80/00:00:01:00:00/40 tag 4 ncq 4096 in
[ 8.444390] res 40/00:e8:00:0a:80/00:00:01:00:00/40 Emask 0x10 (ATA bus error)
[ 8.444391] ata1.00: status: { DRDY }