Hi,
On 2.6.34:
While writing some data to an old PATA Maxtor disk connected to a PDC20268 Promise
controller using the libata driver there were some IO errors.
After some time those resulted in a endless error message loop that made the system essentially
unusable: (console was flooded and unusable, ssh was extremly slow etc.):
This does not exactly look like graceful error handling.
Excerpts from the log (full version available on request)
ata12.00: configured for UDMA/100
ata12: EH complete
ata12.00: configured for UDMA/100
ata12: EH complete
ata12.00: configured for UDMA/100
ata12: EH complete
ata12.00: configured for UDMA/100
ata12: EH complete
ata12.00: configured for UDMA/100
ata12: EH complete
ata12.00: configured for UDMA/100
sd 11:0:0:0: [sdd] Unhandled sense code
sd 11:0:0:0: [sdd] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
sd 11:0:0:0: [sdd] Sense Key : Medium Error [current] [descriptor]
Descriptor sense data with sense descriptors (in hex):
72 03 13 00 00 00 00 0c 00 0a 80 00 00 00 00 00
00 5b 23 bb
sd 11:0:0:0: [sdd] Add. Sense: Address mark not found for data field
sd 11:0:0:0: [sdd] CDB: Read(10): 28 00 00 5b 23 4f 00 00 80 00
ata12: EH complete
ata12.00: limiting speed to UDMA/66:PIO4
ata12: soft resetting link
ata12.00: configured for UDMA/66
ata12: EH complete
ata12.00: configured for UDMA/66
ata12: EH complete
ata12.00: configured for UDMA/66
ata12: EH complete
ata12.00: configured for UDMA/66
ata12: EH complete
ata12.00: configured for UDMA/66
ata12: EH complete
ata12.00: configured for UDMA/66
sd 11:0:0:0: [sdd] Unhandled sense code
sd 11:0:0:0: [sdd] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
sd 11:0:0:0: [sdd] Sense Key : Medium Error [current] [descriptor]
Descriptor sense data with sense descriptors (in hex):
72 03 13 00 00 00 00 0c 00 0a 80 00 00 00 00 00
00 5b 23 bb
sd 11:0:0:0: [sdd] Add. Sense: Address mark not found for data field
sd 11:0:0:0: [sdd] CDB: Read(10): 28 00 00 5b 23 bb 00 00 04 00
quiet_error: 10 callbacks suppressed
ata12: EH complete
EXT4-fs (dm-0): mounted filesystem with ordered data mode
kjournald starting. Commit interval 5 seconds
EXT3-fs (dm-1): using internal journal
EXT3-fs (dm-1): mounted filesystem with writeback data mode
EXT4-fs (dm-2): mounted filesystem with ordered data mode
ata12.00: configured for UDMA/66
ata12: EH complete
ata12.00: configured for UDMA/66
ata12: EH complete
ata12.00: configured for UDMA/66
ata12: EH complete
ata12.00: configured for UDMA/66
ata12: EH complete
ata12.00: configured for UDMA/66
ata12: EH complete
ata12.00: configured for UDMA/66
...
sd 11:0:0:0: [sdd] Unhandled sense code
sd 11:0:0:0: [sdd] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
sd 11:0:0:0: [sdd] Sense Key : Medium Error [current] [descriptor]
Descriptor sense data with sense descriptors (in hex):
72 03 13 00 00 00 00 0c 00 0a 80 00 00 00 00 00
00 5b 23 bb
sd 11:0:0:0: [sdd] Add. Sense: Address mark not found for data field
sd 11:0:0:0: [sdd] CDB: Read(10): 28 00 00 5b 23 bb 00 00 04 00
quiet_error: 10 callbacks suppressed
ata12: EH complete
ata12.00: configured for UDMA/33
ata12: EH complete
ata12.00: configured for UDMA/33
ata12: EH complete
ata12.00: configured for UDMA/33
ata12: EH complete
ata12.00: configured for UDMA/33
ata12: EH complete
ata12.00: configured for UDMA/33
ata12: EH complete
ata12.00: configured for UDMA/33
sd 11:0:0:0: [sdd] Unhandled sense code
sd 11:0:0:0: [sdd] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
sd 11:0:0:0: [sdd] Sense Key : Medium Error [current] [descriptor]
Descriptor sense data with sense descriptors (in hex):
72 03 13 00 00 00 00 0c 00 0a 80 00 00 00 00 00
00 5b 23 bb
sd 11:0:0:0: [sdd] Add. Sense: Address mark not found for data field
sd 11:0:0:0: [sdd] CDB: Read(10): 28 00 00 5b 23 bb 00 00 04 00
ata12: EH complete
ata12.00: configured for UDMA/33
ata12: EH complete
ata12.00: configured for UDMA/33
ata12: EH complete
ata12.00: configured for UDMA/33
ata12: EH complete
ata12.00: configured for UDMA/33
ata12: EH complete
ata12.00: configured for UDMA/33
ata12: EH complete
ata12.00: configured for UDMA/33
... lots of similar messages until it goes down to PIO0 then some more errors ....
ata12: soft resetting link
ata12: soft resetting link
ata12: link is slow to respond, please be patient (ready=0)
ata12.00: qc timeout (cmd 0xec)
ata12.00: failed to IDENTIFY (I/O error, err_mask=0x4)
ata12: link is slow to respond, please be patient (ready=0)
ata12: soft resetting link
ata12.00: disabled
ata12: soft resetting link
ata12: EH complete
sd 11:0:0:0: [sdd] Unhandled error code
sd 11:0:0:0: [sdd] Result: hostbyte=DID_BAD_TARGET driverbyte=DRIVER_OK
sd 11:0:0:0: [sdd] CDB: Write(10): 2a 00 00 e5 e7 08 00 01 00 00
lost page write due to I/O error on sdd
lost page write due to I/O error on sdd
lost page write due to I/O error on sdd
lost page write due to I/O error on sdd
lost page write due to I/O error on sdd
lost page write due to I/O error on sdd
lost page write due to I/O error on sdd
lost page write due to I/O error on sdd
lost page write due to I/O error on sdd
lost page write due to I/O error on sdd
sd 11:0:0:0: [sdd] Unhandled error code
and finally and endless flood of
sd 11:0:0:0: [sdd] Result: hostbyte=DID_BAD_TARGET driverbyte=DRIVER_OK
sd 11:0:0:0: [sdd] CDB: Write(10): 2a 00 00 e5 e8 08 00 01 00 00
sd 11:0:0:0: [sdd] Unhandled error code
sd 11:0:0:0: [sdd] Result: hostbyte=DID_BAD_TARGET driverbyte=DRIVER_OK
sd 11:0:0:0: [sdd] CDB: Write(10): 2a 00 00 e5 e9 08 00 01 00 00
sd 11:0:0:0: [sdd] Unhandled error code
sd 11:0:0:0: [sdd] Result: hostbyte=DID_BAD_TARGET driverbyte=DRIVER_OK
sd 11:0:0:0: [sdd] CDB: Write(10): 2a 00 00 e5 ea 08 00 01 00 00
sd 11:0:0:0: [sdd] Unhandled error code
sd 11:0:0:0: [sdd] Result: hostbyte=DID_BAD_TARGET driverbyte=DRIVER_OK
sd 11:0:0:0: [sdd] CDB: Write(10): 2a 00 00 e5 eb 08 00 01 00 00
sd 11:0:0:0: [sdd] Unhandled error code
sd 11:0:0:0: [sdd] Result: hostbyte=DID_BAD_TARGET driverbyte=DRIVER_OK
sd 11:0:0:0: [sdd] CDB: Write(10): 2a 00 00 e5 ec 08 00 01 00 00
sd 11:0:0:0: [sdd] Unhandled error code
sd 11:0:0:0: [sdd] Result: hostbyte=DID_BAD_TARGET driverbyte=DRIVER_OK
sd 11:0:0:0: [sdd] CDB: Write(10): 2a 00 00 e5 ed 08 00 01 00 00
sd 11:0:0:0: [sdd] Unhandled error code
sd 11:0:0:0: [sdd] Result: hostbyte=DID_BAD_TARGET driverbyte=DRIVER_OK
sd 11:0:0:0: [sdd] CDB: Write(10): 2a 00 00 e5 ee 08 00 01 00 00
sd 11:0:0:0: [sdd] Unhandled error code
sd 11:0:0:0: [sdd] Result: hostbyte=DID_BAD_TARGET driverbyte=DRIVER_OK
sd 11:0:0:0: [sdd] CDB: Write(10): 2a 00 00 e5 ef 08 00 01 00 00
sd 11:0:0:0: [sdd] Unhandled error code
sd 11:0:0:0: [sdd] Result: hostbyte=DID_BAD_TARGET driverbyte=DRIVER_OK
sd 11:0:0:0: [sdd] CDB: Write(10): 2a 00 00 e5 f0 08 00 01 00 00
sd 11:0:0:0: [sdd] Unhandled error code
sd 11:0:0:0: [sdd] Result: hostbyte=DID_BAD_TARGET driverbyte=DRIVER_OK
sd 11:0:0:0: [sdd] CDB: Write(10): 2a 00 00 e5 f1 08 00 01 00 00
sd 11:0:0:0: [sdd] Unhandled error code
sd 11:0:0:0: [sdd] Result: hostbyte=DID_BAD_TARGET driverbyte=DRIVER_OK
sd 11:0:0:0: [sdd] CDB: Write(10): 2a 00 00 e5 f2 08 00 01 00 00
same messages repeating forever, just with CDB changing occasionally.
....
not stopping until I reset the box.
-Andi
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