Recently I started getting from time to time temporary I/O freezes and similar dmesg errors to these:
[12295.723447] ata15.00: exception Emask 0x0 SAct 0x200000 SErr 0x0 action 0x0
[12295.723450] ata15.00: irq_stat 0x40000001
[12295.723452] ata15.00: failed command: READ FPDMA QUEUED
[12295.723455] ata15.00: cmd 60/20:a8:c0:39:18/00:00:00:00:00/40 tag 21 ncq 16384 in
res 51/40:05:db:39:18/00:00:00:00:00/40 Emask 0x409 (media error) <F>
[12295.723457] ata15.00: status: { DRDY ERR }
[12295.723458] ata15.00: error: { UNC }
[12295.729220] ata15.00: configured for UDMA/133
[12295.729232] sd 14:0:0:0: [sdi] tag#21 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[12295.729234] sd 14:0:0:0: [sdi] tag#21 Sense Key : Medium Error [current] [descriptor]
[12295.729236] sd 14:0:0:0: [sdi] tag#21 Add. Sense: Unrecovered read error - auto reallocate failed
[12295.729238] sd 14:0:0:0: [sdi] tag#21 CDB: Read(10) 28 00 00 18 39 c0 00 00 20 00
[12295.729240] blk_update_request: I/O error, dev sdi, sector 1587675
[12295.729246] BTRFS error (device dm-3): bdev /dev/mapper/hitachi1 errs: wr 0, rd 453, flush 0, corrupt 11, gen 0
[12295.729266] ata15: EH complete
[12297.005459] BTRFS info (device dm-3): read error corrected: ino 1 off 831750144 (dev /dev/mapper/hitachi1 sector 1585600)
[12298.913768] BTRFS info (device dm-3): read error corrected: ino 1 off 831754240 (dev /dev/mapper/hitachi1 sector 1585608)
[12298.922124] BTRFS info (device dm-3): read error corrected: ino 1 off 831758336 (dev /dev/mapper/hitachi1 sector 1585616)
[12299.113862] BTRFS info (device dm-3): read error corrected: ino 1 off 831762432 (dev /dev/mapper/hitachi1 sector 1585624)
[12312.056208] ata15.00: exception Emask 0x0 SAct 0x10000000 SErr 0x0 action 0x0
[12312.056211] ata15.00: irq_stat 0x40000001
[12312.056213] ata15.00: failed command: READ FPDMA QUEUED
[12312.056216] ata15.00: cmd 60/20:e0:20:f0:16/00:00:00:00:00/40 tag 28 ncq 16384 in
res 51/40:20:20:f0:16/00:00:00:00:00/40 Emask 0x409 (media error) <F>
[12312.056217] ata15.00: status: { DRDY ERR }
[12312.056218] ata15.00: error: { UNC }
[12312.061908] ata15.00: configured for UDMA/133
[12312.061920] sd 14:0:0:0: [sdi] tag#28 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[12312.061924] sd 14:0:0:0: [sdi] tag#28 Sense Key : Medium Error [current] [descriptor]
[12312.061934] sd 14:0:0:0: [sdi] tag#28 Add. Sense: Unrecovered read error - auto reallocate failed
[12312.061937] sd 14:0:0:0: [sdi] tag#28 CDB: Read(10) 28 00 00 16 f0 20 00 00 20 00
[12312.061939] blk_update_request: I/O error, dev sdi, sector 1503264
[12312.061947] BTRFS error (device dm-3): bdev /dev/mapper/hitachi1 errs: wr 0, rd 454, flush 0, corrupt 11, gen 0
[12312.061966] ata15: EH complete
[12314.693762] IPv4: martian source 255.255.255.255 from 10.237.235.225, on dev brnat
[12314.693768] ll header: 00000000: ff ff ff ff ff ff 08 00 27 6e f6 e6 08 00 ........'n....
[12319.714302] ata15.00: exception Emask 0x0 SAct 0x2000000 SErr 0x0 action 0x0
[12319.714307] ata15.00: irq_stat 0x40000001
[12319.714311] ata15.00: failed command: READ FPDMA QUEUED
[12319.714318] ata15.00: cmd 60/20:c8:20:0b:17/00:00:00:00:00/40 tag 25 ncq 16384 in
res 51/40:1e:22:0b:17/00:00:00:00:00/40 Emask 0x409 (media error) <F>
[12319.714321] ata15.00: status: { DRDY ERR }
[12319.714323] ata15.00: error: { UNC }
[12319.720014] ata15.00: configured for UDMA/133
[12319.720038] sd 14:0:0:0: [sdi] tag#25 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[12319.720043] sd 14:0:0:0: [sdi] tag#25 Sense Key : Medium Error [current] [descriptor]
[12319.720046] sd 14:0:0:0: [sdi] tag#25 Add. Sense: Unrecovered read error - auto reallocate failed
[12319.720050] sd 14:0:0:0: [sdi] tag#25 CDB: Read(10) 28 00 00 17 0b 20 00 00 20 00
[12319.720053] blk_update_request: I/O error, dev sdi, sector 1510178
[12319.720063] BTRFS error (device dm-3): bdev /dev/mapper/hitachi1 errs: wr 0, rd 455, flush 0, corrupt 11, gen 0
[12319.720089] ata15: EH complete
[12320.040862] BTRFS info (device dm-3): read error corrected: ino 1 off 788545536 (dev /dev/mapper/hitachi1 sector 1501216)
[12320.048136] BTRFS info (device dm-3): read error corrected: ino 1 off 792084480 (dev /dev/mapper/hitachi1 sector 1508128)
[12320.049188] BTRFS info (device dm-3): read error corrected: ino 1 off 788549632 (dev /dev/mapper/hitachi1 sector 1501224)
[12320.056486] BTRFS info (device dm-3): read error corrected: ino 1 off 792088576 (dev /dev/mapper/hitachi1 sector 1508136)
[12320.057540] BTRFS info (device dm-3): read error corrected: ino 1 off 788553728 (dev /dev/mapper/hitachi1 sector 1501232)
[12320.064841] BTRFS info (device dm-3): read error corrected: ino 1 off 792092672 (dev /dev/mapper/hitachi1 sector 1508144)
[12320.065898] BTRFS info (device dm-3): read error corrected: ino 1 off 788557824 (dev /dev/mapper/hitachi1 sector 1501240)
[12320.074513] BTRFS info (device dm-3): read error corrected: ino 1 off 792096768 (dev /dev/mapper/hitachi1 sector 1508152)
[12334.805508] ata15.00: exception Emask 0x0 SAct 0xfc0000 SErr 0x0 action 0x0
[12334.805512] ata15.00: irq_stat 0x40000008
[12334.805514] ata15.00: failed command: READ FPDMA QUEUED
[12334.805518] ata15.00: cmd 60/20:b8:00:d1:17/00:00:00:00:00/40 tag 23 ncq 16384 in
res 51/40:11:0f:d1:17/00:00:00:00:00/40 Emask 0x409 (media error) <F>
[12334.805520] ata15.00: status: { DRDY ERR }
[12334.805521] ata15.00: error: { UNC }
[12334.811207] ata15.00: configured for UDMA/133
[12334.811232] sd 14:0:0:0: [sdi] tag#23 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[12334.811234] sd 14:0:0:0: [sdi] tag#23 Sense Key : Medium Error [current] [descriptor]
[12334.811236] sd 14:0:0:0: [sdi] tag#23 Add. Sense: Unrecovered read error - auto reallocate failed
[12334.811238] sd 14:0:0:0: [sdi] tag#23 CDB: Read(10) 28 00 00 17 d1 00 00 00 20 00
[12334.811240] blk_update_request: I/O error, dev sdi, sector 1560847
[12334.811246] BTRFS error (device dm-3): bdev /dev/mapper/hitachi1 errs: wr 0, rd 456, flush 0, corrupt 11, gen 0
[12334.811260] ata15: EH complete
[12334.904234] BTRFS info (device dm-3): read error corrected: ino 1 off 818020352 (dev /dev/mapper/hitachi1 sector 1558784)
[12335.123438] BTRFS info (device dm-3): read error corrected: ino 1 off 818024448 (dev /dev/mapper/hitachi1 sector 1558792)
[12335.145937] BTRFS info (device dm-3): read error corrected: ino 1 off 818028544 (dev /dev/mapper/hitachi1 sector 1558800)
[12335.154283] BTRFS info (device dm-3): read error corrected: ino 1 off 818032640 (dev /dev/mapper/hitachi1 sector 1558808)
[12357.904701] ata15: failed to read log page 10h (errno=-5)
[12357.904706] ata15.00: exception Emask 0x1 SAct 0x1efc0 SErr 0x0 action 0x0
[12357.904707] ata15.00: irq_stat 0x40000008
[12357.904709] ata15.00: failed command: WRITE FPDMA QUEUED
[12357.904712] ata15.00: cmd 61/50:30:b0:fe:e6/00:00:cd:00:00/40 tag 6 ncq 40960 out
res 50/00:00:00:00:00/00:00:00:00:00/00 Emask 0x1 (device error)
[12357.904713] ata15.00: status: { DRDY }
[12357.904714] ata15.00: failed command: WRITE FPDMA QUEUED
[12357.904717] ata15.00: cmd 61/80:38:00:ff:e6/00:00:cd:00:00/40 tag 7 ncq 65536 out
res 50/00:00:00:00:00/00:00:00:00:00/00 Emask 0x1 (device error)
[12357.904718] ata15.00: status: { DRDY }
[12357.904719] ata15.00: failed command: WRITE FPDMA QUEUED
[12357.904729] ata15.00: cmd 61/80:40:80:ff:e6/00:00:cd:00:00/40 tag 8 ncq 65536 out
res 50/00:00:00:00:00/00:00:00:00:00/00 Emask 0x1 (device error)
[12357.904730] ata15.00: status: { DRDY }
[12357.904731] ata15.00: failed command: WRITE FPDMA QUEUED
[12357.904734] ata15.00: cmd 61/80:48:00:00:e7/00:00:cd:00:00/40 tag 9 ncq 65536 out
res 50/00:00:00:00:00/00:00:00:00:00/00 Emask 0x1 (device error)
[12357.904735] ata15.00: status: { DRDY }
[12357.904736] ata15.00: failed command: WRITE FPDMA QUEUED
[12357.904738] ata15.00: cmd 61/30:50:80:00:e7/00:00:cd:00:00/40 tag 10 ncq 24576 out
res 50/00:00:00:00:00/00:00:00:00:00/00 Emask 0x1 (device error)
[12357.904739] ata15.00: status: { DRDY }
[12357.904740] ata15.00: failed command: READ FPDMA QUEUED
[12357.904742] ata15.00: cmd 60/20:58:40:29:18/00:00:00:00:00/40 tag 11 ncq 16384 in
res 50/00:00:00:00:00/00:00:00:00:00/00 Emask 0x1 (device error)
[12357.904743] ata15.00: status: { DRDY }
[12357.904744] ata15.00: failed command: READ FPDMA QUEUED
[12357.904747] ata15.00: cmd 60/20:68:60:49:7e/00:00:2d:00:00/40 tag 13 ncq 16384 in
res 50/00:00:00:00:00/00:00:00:00:00/00 Emask 0x1 (device error)
[12357.904748] ata15.00: status: { DRDY }
[12357.904749] ata15.00: failed command: READ FPDMA QUEUED
[12357.904751] ata15.00: cmd 60/18:70:68:ab:f0/03:00:8a:00:00/40 tag 14 ncq 405504 in
res 50/00:00:00:00:00/00:00:00:00:00/00 Emask 0x1 (device error)
[12357.904752] ata15.00: status: { DRDY }
[12357.904753] ata15.00: failed command: READ FPDMA QUEUED
[12357.904755] ata15.00: cmd 60/20:78:80:e6:39/00:00:a4:00:00/40 tag 15 ncq 16384 in
res 50/00:00:00:00:00/00:00:00:00:00/00 Emask 0x1 (device error)
[12357.904756] ata15.00: status: { DRDY }
[12357.904757] ata15.00: failed command: READ FPDMA QUEUED
[12357.904759] ata15.00: cmd 60/40:80:c0:e6:39/00:00:a4:00:00/40 tag 16 ncq 32768 in
res 50/00:00:00:00:00/00:00:00:00:00/00 Emask 0x1 (device error)
[12357.904760] ata15.00: status: { DRDY }
[12357.911007] ata15.00: failed to IDENTIFY (I/O error, err_mask=0x1)
[12357.911009] ata15.00: revalidation failed (errno=-5)
[12357.911012] ata15: hard resetting link
[12358.221692] ata15: SATA link up 6.0 Gbps (SStatus 133 SControl 300)
[12358.227478] ata15.00: configured for UDMA/133
[12358.227531] ata15: EH complete
[12363.204572] ata15.00: exception Emask 0x0 SAct 0x803c00 SErr 0x0 action 0x0
[12363.204575] ata15.00: irq_stat 0x40000008
[12363.204577] ata15.00: failed command: READ FPDMA QUEUED
[12363.204580] ata15.00: cmd 60/20:b8:40:29:18/00:00:00:00:00/40 tag 23 ncq 16384 in
res 51/40:13:4d:29:18/00:00:00:00:00/40 Emask 0x409 (media error) <F>
[12363.204581] ata15.00: status: { DRDY ERR }
[12363.204582] ata15.00: error: { UNC }
[12363.210278] ata15.00: configured for UDMA/133
[12363.210299] sd 14:0:0:0: [sdi] tag#23 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[12363.210302] sd 14:0:0:0: [sdi] tag#23 Sense Key : Medium Error [current] [descriptor]
[12363.210304] sd 14:0:0:0: [sdi] tag#23 Add. Sense: Unrecovered read error - auto reallocate failed
[12363.210306] sd 14:0:0:0: [sdi] tag#23 CDB: Read(10) 28 00 00 18 29 40 00 00 20 00
[12363.210307] blk_update_request: I/O error, dev sdi, sector 1583437
[12363.210313] BTRFS error (device dm-3): bdev /dev/mapper/hitachi1 errs: wr 0, rd 457, flush 0, corrupt 11, gen 0
[12363.210328] ata15: EH complete
It looks to me a bit like disk failure on hardware level. Smartctl shows following:
smartctl 6.3 2014-07-26 r3976 [x86_64-linux-4.6.4-1-default] (SUSE RPM)
Copyright (C) 2002-14, Bruce Allen, Christian Franke, www.smartmontools.org
=== START OF INFORMATION SECTION ===
Model Family: Hitachi Deskstar 7K3000
Device Model: Hitachi HDS723020BLA642
Serial Number: MN5220F31RXSKK
LU WWN Device Id: 5 000cca 369d883a1
Firmware Version: MN6OA5C0
User Capacity: 2,000,398,934,016 bytes [2.00 TB]
Sector Size: 512 bytes logical/physical
Rotation Rate: 7200 rpm
Form Factor: 3.5 inches
Device is: In smartctl database [for details use: -P show]
ATA Version is: ATA8-ACS T13/1699-D revision 4
SATA Version is: SATA 2.6, 6.0 Gb/s (current: 6.0 Gb/s)
Local Time is: Thu Oct 31 01:32:48 2019 CET
SMART support is: Available - device has SMART capability.
SMART support is: Enabled
=== START OF READ SMART DATA SECTION ===
SMART overall-health self-assessment test result: FAILED!
Drive failure expected in less than 24 hours. SAVE ALL DATA.
See vendor-specific Attribute list for failed Attributes.
General SMART Values:
Offline data collection status: (0x84) Offline data collection activity
was suspended by an interrupting command from host.
Auto Offline Data Collection: Enabled.
Self-test execution status: ( 0) The previous self-test routine completed
without error or no self-test has ever
been run.
Total time to complete Offline
data collection: (20235) seconds.
Offline data collection
capabilities: (0x5b) SMART execute Offline immediate.
Auto Offline data collection on/off support.
Suspend Offline collection upon new
command.
Offline surface scan supported.
Self-test supported.
No Conveyance Self-test supported.
Selective Self-test supported.
SMART capabilities: (0x0003) Saves SMART data before entering
power-saving mode.
Supports SMART auto save timer.
Error logging capability: (0x01) Error logging supported.
General Purpose Logging supported.
Short self-test routine
recommended polling time: ( 1) minutes.
Extended self-test routine
recommended polling time: ( 338) minutes.
SCT capabilities: (0x003d) SCT Status supported.
SCT Error Recovery Control supported.
SCT Feature Control supported.
SCT Data Table supported.
SMART Attributes Data Structure revision number: 16
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE
1 Raw_Read_Error_Rate 0x000b 076 076 016 Pre-fail Always - 119275578
2 Throughput_Performance 0x0005 134 134 054 Pre-fail Offline - 87
3 Spin_Up_Time 0x0007 136 136 024 Pre-fail Always - 420 (Average 420)
4 Start_Stop_Count 0x0012 100 100 000 Old_age Always - 887
5 Reallocated_Sector_Ct 0x0033 001 001 005 Pre-fail Always FAILING_NOW 6
7 Seek_Error_Rate 0x000b 100 100 067 Pre-fail Always - 0
8 Seek_Time_Performance 0x0005 135 135 020 Pre-fail Offline - 26
9 Power_On_Hours 0x0012 099 099 000 Old_age Always - 12749
10 Spin_Retry_Count 0x0013 100 100 060 Pre-fail Always - 0
12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 816
192 Power-Off_Retract_Count 0x0032 100 100 000 Old_age Always - 1046
193 Load_Cycle_Count 0x0012 100 100 000 Old_age Always - 1046
194 Temperature_Celsius 0x0002 150 150 000 Old_age Always - 40 (Min/Max 18/51)
196 Reallocated_Event_Count 0x0032 100 100 000 Old_age Always - 6
197 Current_Pending_Sector 0x0022 001 001 000 Old_age Always - 4999
198 Offline_Uncorrectable 0x0008 100 100 000 Old_age Offline - 20
199 UDMA_CRC_Error_Count 0x000a 200 200 000 Old_age Always - 0
SMART Error Log Version: 1
ATA Error Count: 48 (device log contains only the most recent five errors)
CR = Command Register [HEX]
FR = Features Register [HEX]
SC = Sector Count Register [HEX]
SN = Sector Number Register [HEX]
CL = Cylinder Low Register [HEX]
CH = Cylinder High Register [HEX]
DH = Device/Head Register [HEX]
DC = Device Command Register [HEX]
ER = Error register [HEX]
ST = Status register [HEX]
Powered_Up_Time is measured from power on, and printed as
DDd+hh:mm:SS.sss where DD=days, hh=hours, mm=minutes,
SS=sec, and sss=millisec. It "wraps" after 49.710 days.
Error 48 occurred at disk power-on lifetime: 12749 hours (531 days + 5 hours)
When the command that caused the error occurred, the device was active or idle.
After command completion occurred, registers were:
ER ST SC SN CL CH DH
-- -- -- -- -- -- --
40 51 13 4d 29 18 00 Error: UNC at LBA = 0x0018294d = 1583437
Commands leading to the command that caused the error were:
CR FR SC SN CL CH DH DC Powered_Up_Time Command/Feature_Name
-- -- -- -- -- -- -- -- ---------------- --------------------
60 68 68 00 c4 f0 40 00 03:26:18.823 READ FPDMA QUEUED
60 00 60 00 ba f0 40 00 03:26:18.823 READ FPDMA QUEUED
60 80 58 80 b3 f0 40 00 03:26:18.823 READ FPDMA QUEUED
60 00 50 80 ae f0 40 00 03:26:18.823 READ FPDMA QUEUED
61 50 e0 b0 fe e6 40 00 03:26:18.747 WRITE FPDMA QUEUED
Error 47 occurred at disk power-on lifetime: 12749 hours (531 days + 5 hours)
When the command that caused the error occurred, the device was active or idle.
After command completion occurred, registers were:
ER ST SC SN CL CH DH
-- -- -- -- -- -- --
40 51 13 4d 29 18 00 Error: UNC at LBA = 0x0018294d = 1583437
Commands leading to the command that caused the error were:
CR FR SC SN CL CH DH DC Powered_Up_Time Command/Feature_Name
-- -- -- -- -- -- -- -- ---------------- --------------------
60 20 68 60 49 7e 40 00 03:26:12.597 READ FPDMA QUEUED
60 20 60 e0 28 18 40 00 03:25:59.897 READ FPDMA QUEUED
60 20 58 40 29 18 40 00 03:25:59.897 READ FPDMA QUEUED
61 30 50 80 00 e7 40 00 03:25:59.897 WRITE FPDMA QUEUED
61 80 48 00 00 e7 40 00 03:25:59.897 WRITE FPDMA QUEUED
Error 46 occurred at disk power-on lifetime: 12749 hours (531 days + 5 hours)
When the command that caused the error occurred, the device was active or idle.
After command completion occurred, registers were:
ER ST SC SN CL CH DH
-- -- -- -- -- -- --
40 51 11 0f d1 17 00 Error: UNC at LBA = 0x0017d10f = 1560847
Commands leading to the command that caused the error were:
CR FR SC SN CL CH DH DC Powered_Up_Time Command/Feature_Name
-- -- -- -- -- -- -- -- ---------------- --------------------
60 20 b8 00 d1 17 40 00 03:25:52.007 READ FPDMA QUEUED
61 80 b0 00 2b 83 40 00 03:25:52.007 WRITE FPDMA QUEUED
61 18 a8 80 2b 83 40 00 03:25:52.007 WRITE FPDMA QUEUED
61 80 a0 80 2a 83 40 00 03:25:52.007 WRITE FPDMA QUEUED
61 80 98 00 2a 83 40 00 03:25:52.007 WRITE FPDMA QUEUED
Error 45 occurred at disk power-on lifetime: 12749 hours (531 days + 5 hours)
When the command that caused the error occurred, the device was active or idle.
After command completion occurred, registers were:
ER ST SC SN CL CH DH
-- -- -- -- -- -- --
40 51 1e 22 0b 17 00 Error: UNC at LBA = 0x00170b22 = 1510178
Commands leading to the command that caused the error were:
CR FR SC SN CL CH DH DC Powered_Up_Time Command/Feature_Name
-- -- -- -- -- -- -- -- ---------------- --------------------
60 20 c8 20 0b 17 40 00 03:25:34.323 READ FPDMA QUEUED
60 20 c0 e0 42 7e 40 00 03:25:34.315 READ FPDMA QUEUED
60 20 b8 60 e4 68 40 00 03:25:34.300 READ FPDMA QUEUED
60 20 b0 e0 cb 16 40 00 03:25:32.981 READ FPDMA QUEUED
60 20 a8 80 f1 7d 40 00 03:25:32.975 READ FPDMA QUEUED
Error 44 occurred at disk power-on lifetime: 12749 hours (531 days + 5 hours)
When the command that caused the error occurred, the device was active or idle.
After command completion occurred, registers were:
ER ST SC SN CL CH DH
-- -- -- -- -- -- --
40 51 20 20 f0 16 00 Error: UNC at LBA = 0x0016f020 = 1503264
Commands leading to the command that caused the error were:
CR FR SC SN CL CH DH DC Powered_Up_Time Command/Feature_Name
-- -- -- -- -- -- -- -- ---------------- --------------------
60 20 e0 20 f0 16 40 00 03:25:29.793 READ FPDMA QUEUED
61 00 d8 88 53 9e 40 00 03:25:29.793 WRITE FPDMA QUEUED
61 00 d0 80 d3 15 40 00 03:25:29.741 WRITE FPDMA QUEUED
61 00 c8 80 7f 15 40 00 03:25:29.741 WRITE FPDMA QUEUED
61 00 c0 80 0f 15 40 00 03:25:29.741 WRITE FPDMA QUEUED
SMART Self-test log structure revision number 1
No self-tests have been logged. [To run self-tests, use: smartctl -t]
SMART Selective self-test log data structure revision number 1
SPAN MIN_LBA MAX_LBA CURRENT_TEST_STATUS
1 0 0 Not_testing
2 0 0 Not_testing
3 0 0 Not_testing
4 0 0 Not_testing
5 0 0 Not_testing
Selective self-test flags (0x0):
After scanning selected spans, do NOT read-scan remainder of disk.
If Selective self-test is pending on power-up, resume after 0 minute delay.
I’ve never been through actual HDD failure so I don’t really know what are symptoms of such thing however my 2 still active brain cells tell me that this is exactly how it looks like. 6 reallocation failures don’t look like terrible number though.
Is this disk still usable or do I need to replace it absolutely immediately, right this instant? To add some context it’s BTRFS software RAID1 so death of this drive shouldn’t result in data loss… Assuming BTRFS RAID1 acutually works that is…