Comment # 23 on bug 913105 from Bj�rn Voigt

Today I had an SATA drive exception after resume from suspend-to-disk. I am
relatively sure, that the exception occured after first I/O operation with this
disk. (My Seamonkey profile uses the drive as cache and for some mail folders.
I mount the EXT4 filesystem with option errors=remount-ro.)

Is this exception power-management related?

Setup:
- Kernel 3.12.36
- Mainboard & BIOS: DH55TC, BIOS TCIBX10H.86A.0048.2011.1206.1342 12/06/2011
- Second drive: ata4.00: ATA-9: WDC WD30EFRX-68EUZN0, 80.00A80, max UDMA/133
  (Western Digital Red 3 TB)

The exception (from /var/log/messages):
2015-01-27T09:07:15.986794+01:00 mybox sudo: pam_unix(sudo:session): session
closed for user root
2015-01-27T09:07:17.087711+01:00 mybox kernel: [59711.988610] ata4.00:
exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
2015-01-27T09:07:17.087729+01:00 mybox kernel: [59711.988615] ata4.00: irq_stat
0x40000001
2015-01-27T09:07:17.087730+01:00 mybox kernel: [59711.988620] ata4.00: failed
command: READ DMA EXT
2015-01-27T09:07:17.087732+01:00 mybox kernel: [59711.988629] ata4.00: cmd
25/00:08:b0:1d:ed/00:00:a0:00:00/e0 tag 7 dma 4096 in
2015-01-27T09:07:17.087733+01:00 mybox kernel: [59711.988629]          res
51/40:08:b0:1d:ed/00:00:a0:00:00/e0 Emask 0x9 (media error)
2015-01-27T09:07:17.087735+01:00 mybox kernel: [59711.988633] ata4.00: status:
{ DRDY ERR }
2015-01-27T09:07:17.087736+01:00 mybox kernel: [59711.988636] ata4.00: error: {
UNC }
2015-01-27T09:07:17.090989+01:00 mybox kernel: [59711.993572] ata4.00:
configured for UDMA/133
2015-01-27T09:07:17.090993+01:00 mybox kernel: [59711.993579] sd 3:0:0:0: [sdb]
Unhandled sense code
2015-01-27T09:07:17.090994+01:00 mybox kernel: [59711.993580] sd 3:0:0:0: [sdb] 
2015-01-27T09:07:17.090994+01:00 mybox kernel: [59711.993581] Result:
hostbyte=DID_OK driverbyte=DRIVER_SENSE
2015-01-27T09:07:17.090995+01:00 mybox kernel: [59711.993582] sd 3:0:0:0: [sdb] 
2015-01-27T09:07:17.090995+01:00 mybox kernel: [59711.993584] Sense Key :
Medium Error [current] [descriptor]
2015-01-27T09:07:17.090996+01:00 mybox kernel: [59711.993586] Descriptor sense
data with sense descriptors (in hex):
2015-01-27T09:07:17.090996+01:00 mybox kernel: [59711.993590]         72 03 11
04 00 00 00 0c 00 0a 80 00 00 00 00 00 
2015-01-27T09:07:17.090997+01:00 mybox kernel: [59711.993595]         a0 ed 1d
b0 
2015-01-27T09:07:17.090997+01:00 mybox kernel: [59711.993597] sd 3:0:0:0: [sdb] 
2015-01-27T09:07:17.090998+01:00 mybox kernel: [59711.993598] Add. Sense:
Unrecovered read error - auto reallocate failed
2015-01-27T09:07:17.090998+01:00 mybox kernel: [59711.993599] sd 3:0:0:0: [sdb]
CDB: 
2015-01-27T09:07:17.090999+01:00 mybox kernel: [59711.993600] Read(16): 88 00
00 00 00 00 a0 ed 1d b0 00 00 00 08 00 00
2015-01-27T09:07:17.090999+01:00 mybox kernel: [59711.993606] end_request: I/O
error, dev sdb, sector 2699894192
2015-01-27T09:07:17.091000+01:00 mybox kernel: [59711.993619] ata4: EH complete
2015-01-27T09:07:17.111065+01:00 mybox kernel: [59712.011555] EXT4-fs error
(device sdb6): ext4_find_entry:1303: inode #50857019: comm seamonkey-bin:
reading directory lblock 0
2015-01-27T09:07:17.111081+01:00 mybox kernel: [59712.011560] Aborting journal
on device sdb6-8.
2015-01-27T09:07:17.111083+01:00 mybox kernel: [59712.011737] EXT4-fs (sdb6):
Remounting filesystem read-only
2015-01-27T09:09:34.637633+01:00 mybox kernel: [59849.546908] usb 2-1.4: usbfs:
process 3898 (amarok) did not claim interface 0 before use