Michael Mol wrote:
On Sat, Jul 30, 2011 at 8:03 AM, Peter Humphrey
<pe...@humphrey.ukfsn.org> wrote:
On Saturday 30 July 2011 11:17:52 Dale wrote:
What could have caused this? Could it be a file system problem? I
don't think it is a physical failure since it is working now after
giving it a fresh start. I just don't get how this could have caused a
kernel panic. This is plain weird.
One possibility is that, having now written to almost every location on the
disk, its controller has marked some faulty blocks that used to contain code
in the disk subsystem. If it was reading damaged data, there's no surprise
in anything that happened next!
Well, except that it should have thrown some errors when the
on-platter reed-solomon encoding didn't quite match.
If the controller flagged some faulty blocks, it should show up via
smartctl -A $DEVICE_NODE
I did run the SMART test thing at least twice. It never reported any
problems. This look OK:
root@fireball / # smartctl -A /dev/sdc
smartctl 5.40 2010-10-16 r3189 [x86_64-pc-linux-gnu] (local build)
Copyright (C) 2002-10 by Bruce Allen, http://smartmontools.sourceforge.net
=== START OF READ SMART DATA SECTION ===
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 100 100 051 Pre-fail
Always - 0
3 Spin_Up_Time 0x0007 081 081 011 Pre-fail
Always - 6510
4 Start_Stop_Count 0x0032 100 100 000 Old_age
Always - 105
5 Reallocated_Sector_Ct 0x0033 100 100 010 Pre-fail
Always - 0
7 Seek_Error_Rate 0x000f 253 253 051 Pre-fail
Always - 0
8 Seek_Time_Performance 0x0025 100 100 015 Pre-fail
Offline - 11324
9 Power_On_Hours 0x0032 097 097 000 Old_age
Always - 15355
10 Spin_Retry_Count 0x0033 100 100 051 Pre-fail
Always - 0
11 Calibration_Retry_Count 0x0012 100 100 000 Old_age
Always - 0
12 Power_Cycle_Count 0x0032 100 100 000 Old_age
Always - 105
13 Read_Soft_Error_Rate 0x000e 100 100 000 Old_age
Always - 0
183 Runtime_Bad_Block 0x0032 100 100 000 Old_age
Always - 0
184 End-to-End_Error 0x0033 100 100 000 Pre-fail
Always - 0
187 Reported_Uncorrect 0x0032 100 100 000 Old_age
Always - 0
188 Command_Timeout 0x0032 100 100 000 Old_age
Always - 0
190 Airflow_Temperature_Cel 0x0022 074 069 000 Old_age
Always - 26 (Min/Max 23/28)
194 Temperature_Celsius 0x0022 074 068 000 Old_age
Always - 26 (Min/Max 23/30)
195 Hardware_ECC_Recovered 0x001a 100 100 000 Old_age
Always - 143830378
196 Reallocated_Event_Count 0x0032 100 100 000 Old_age
Always - 0
197 Current_Pending_Sector 0x0012 100 100 000 Old_age
Always - 0
198 Offline_Uncorrectable 0x0030 100 100 000 Old_age
Offline - 0
199 UDMA_CRC_Error_Count 0x003e 100 100 000 Old_age
Always - 0
200 Multi_Zone_Error_Rate 0x000a 100 100 000 Old_age
Always - 0
201 Soft_Read_Error_Rate 0x000a 100 100 000 Old_age
Always - 0
root@fireball / #
Dale
:-) :-)
