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View Full Version : [all variants] System freeze / 'exception Emask'


izi
June 24th, 2008, 01:36 AM
I've been having this problem a while but can't understand why.
Every now and then the system either freezes for a few seconds or completely crashes (hard reboot) and i get:


[49854.904768] ata3.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x2 frozen
[49854.904782] ata3.00: cmd c8/00:08:9d:df:f3/00:00:00:00:00/e5 tag 0 dma 4096 in
[49854.904784] res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout)
[49854.904787] ata3.00: status: { DRDY }
[49854.904801] ata3: soft resetting link
[49855.076724] ata3.00: configured for UDMA/133
[49855.076741] ata3: EH complete
[49855.119054] sd 2:0:0:0: [sda] 156301488 512-byte hardware sectors (80026 MB)
[49855.134712] sd 2:0:0:0: [sda] Write Protect is off
[49855.134721] sd 2:0:0:0: [sda] Mode Sense: 00 3a 00 00
[49855.154650] sd 2:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA


I've checked with smartctl /dev/sda -a and it doesn't seem to report a hardware failure:
=== START OF INFORMATION SECTION ===
Model Family: Western Digital Caviar SE (Serial ATA) family
Device Model: WDC WD800JD-00LUA0
Serial Number: WD-WMAMD3034919
Firmware Version: 06.01D06
User Capacity: 80,026,361,856 bytes
Device is: In smartctl database [for details use: -P show]
ATA Version is: 7
ATA Standard is: Exact ATA specification draft version not indicated
Local Time is: Tue Jun 24 08:22:08 2008 IDT
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: PASSED
See vendor-specific Attribute list for marginal 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: (2460) seconds.
Offline data collection
capabilities: (0x7b) SMART execute Offline immediate.
Auto Offline data collection on/off support.
Suspend Offline collection upon new
command.
Offline surface scan supported.
Self-test supported.
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: ( 2) minutes.
Extended self-test routine
recommended polling time: ( 33) minutes.
Conveyance self-test routine
recommended polling time: ( 5) minutes.

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 0x000f 200 200 051 Pre-fail Always - 0
3 Spin_Up_Time 0x0003 182 164 021 Pre-fail Always - 1891
4 Start_Stop_Count 0x0032 099 099 000 Old_age Always - 1115
5 Reallocated_Sector_Ct 0x0033 200 200 140 Pre-fail Always - 0
7 Seek_Error_Rate 0x000f 200 200 051 Pre-fail Always - 0
9 Power_On_Hours 0x0032 061 061 000 Old_age Always - 28578
10 Spin_Retry_Count 0x0013 100 100 051 Pre-fail Always - 0
11 Calibration_Retry_Count 0x0012 100 100 051 Old_age Always - 0
12 Power_Cycle_Count 0x0032 099 099 000 Old_age Always - 1073
190 Temperature_Celsius 0x0022 065 035 045 Old_age Always In_the_past 35
194 Temperature_Celsius 0x0022 108 078 000 Old_age Always - 35
196 Reallocated_Event_Count 0x0032 200 200 000 Old_age Always - 0
197 Current_Pending_Sector 0x0012 200 200 000 Old_age Always - 0
198 Offline_Uncorrectable 0x0010 200 200 000 Old_age Offline - 0
199 UDMA_CRC_Error_Count 0x003e 200 200 000 Old_age Always - 40
200 Multi_Zone_Error_Rate 0x0009 200 200 051 Pre-fail Offline - 0

SMART Error Log Version: 1
No Errors Logged

SMART Self-test log structure revision number 1

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.


Help anyone ?
is this (yet another) SATA issue ?
I found something a bit similar but I didn't really understand if it's the same problem:
http://mhalligan.livejournal.com/77689.html