All of my main hard drive Barracuda 7200.12 SATA 6Gb/s 250GB ST3250312AS ( 2 years old ) going wild. It has started from 28 June 2014.
Partitions sda1(root), sda5(home), sda7(var) caught this from time to time on random files. Sometimes it is my home partition, when I download something via browser. Sometimes it is /var, where my .rrd bases:
[82845.340334] ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
[82845.340346] ata1.00: irq_stat 0x40000001
[82845.340347] ata1.00: failed command: READ DMA
[82845.340351] ata1.00: cmd c8/00:40:3e:29:0f/00:00:00:00:00/ec tag 0 dma 32768 in
[82845.340351] res 51/40:00:3e:29:0f/00:00:0c:00:00/0c Emask 0x9 (media error)
[82845.340352] ata1.00: status: { DRDY ERR }
[82845.340353] ata1.00: error: { UNC }
[82845.417764] ata1.00: configured for UDMA/133
[82845.417775] sd 0:0:0:0: [sda] Unhandled sense code
[82845.417777] sd 0:0:0:0: [sda]
[82845.417778] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[82845.417779] sd 0:0:0:0: [sda]
[82845.417780] Sense Key : Medium Error [current] [descriptor]
[82845.417782] Descriptor sense data with sense descriptors (in hex):
[82845.417783] 72 03 11 04 00 00 00 0c 00 0a 80 00 00 00 00 00
[82845.417789] 0c 0f 29 3e
[82845.417791] sd 0:0:0:0: [sda]
[82845.417792] Add. Sense: Unrecovered read error - auto reallocate failed
[82845.417793] sd 0:0:0:0: [sda] CDB:
[82845.417794] Read(10): 28 00 0c 0f 29 3e 00 00 40 00
[82845.417799] end_request: I/O error, dev sda, sector 202320190
[82845.417809] ata1: EH complete
[82848.253943] ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
[82848.253946] ata1.00: irq_stat 0x40000001
[82848.253955] ata1.00: failed command: READ DMA
[82848.253958] ata1.00: cmd c8/00:08:3e:29:0f/00:00:00:00:00/ec tag 0 dma 4096 in
[82848.253958] res 51/40:00:3e:29:0f/00:00:0c:00:00/0c Emask 0x9 (media error)
[82848.253960] ata1.00: status: { DRDY ERR }
[82848.253961] ata1.00: error: { UNC }
[82848.264595] ata1.00: configured for UDMA/133
[82848.264610] sd 0:0:0:0: [sda] Unhandled sense code
[82848.264611] sd 0:0:0:0: [sda]
[82848.264612] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[82848.264614] sd 0:0:0:0: [sda]
[82848.264615] Sense Key : Medium Error [current] [descriptor]
[82848.264617] Descriptor sense data with sense descriptors (in hex):
[82848.264618] 72 03 11 04 00 00 00 0c 00 0a 80 00 00 00 00 00
[82848.264623] 0c 0f 29 3e
[82848.264626] sd 0:0:0:0: [sda]
[82848.264627] Add. Sense: Unrecovered read error - auto reallocate failed
[82848.264628] sd 0:0:0:0: [sda] CDB:
[82848.264629] Read(10): 28 00 0c 0f 29 3e 00 00 08 00
[82848.264634] end_request: I/O error, dev sda, sector 202320190
[82848.264648] ata1: EH complete
I've completed the backup. I'm not afraid.
I'm on the latest Ubuntu and on the latest kernel.
Linux Ubuntu 3.13.0-30-lowlatency #54-Ubuntu SMP PREEMPT Mon Jun 9 23:14:29 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux
Google found for me many similar questions and perfect answers on many different forums.
I'm trying to figure, is it hardware failure or it is this patch ( 30 hours ago ) to the linux kernel.
Any suggestions?
Edit1: I've found perfect toools:
# sdparm --page=rw --long --long --long /dev/sda
/dev/sda: ATA ST3250312AS
Direct access device specific parameters: WP=0 DPOFUA=0
Read write error recovery [rw] mode page [PS=0]:
AWRE 1 [cha: n, def: 1] Automatic write reallocation enabled
ARRE 0 [cha: n, def: 0] Automatic read reallocation enabled
TB 0 [cha: n, def: 0] Transfer block
RC 0 [cha: n, def: 0] Read continuous
0: error recovery may cause delays
1: transfer data without waiting for error recovery
EER 0 [cha: n, def: 0] Enable early recovery
1: increase chance of mis-detection or mis-correction of error
PER 0 [cha: n, def: 0] Post error
0: do not post recovered errors
1: report recovered errors (via sense key: recovered error)
DTE 0 [cha: n, def: 0] Data terminate on error
1: terminate data transfer when recovered error detected
DCR 0 [cha: n, def: 0] Disable correction
RRC 0 [cha: n, def: 0] Read retry count
COR_S 0 [cha: n, def: 0] Correction span (obsolete)
HOC 0 [cha: n, def: 0] Head offset count (obsolete)
DSOC 0 [cha: n, def: 0] Data strobe offset count (obsolete)
LBPERE 0 [cha: n, def: 0] Logical block provisioning error reporting enabled
WRC 0 [cha: n, def: 0] Write retry count
RTL 0 [cha: n, def: 0] Recovery time limit (ms)
0: default, -1: 65.5 seconds
Edit2: smartctl -a /dev/sda -> pastebin.com/VsFEbAAQ
Edit3: Why I'm hope that this is not a hw, but Ext4: Because, read this thread bbs.archlinux.org/viewtopic.php?id=151341
Ted Ts'o, the same person who commit previous patch, around 2012-10-24.