On 04/08/15 14:16, Hans Malissa wrote:
Thanks a lot for your help!
smartctl yields the following information (details see below): /dev/sdb looks ok, but /dev/sdc seems to have quite a problem. /dev/sdc seems nonexistent, it’s not even in /dev/ anymore. The disk is physically present, but that’s about it.
The kernel logs contain a lot of information; what should I be looking for?
The logs should contain information on why or what happened when the
disk (sdc) vanished. In your case, it does indeed look like sdc has
failed, so you have a number of options depending on your preference:
1) Simply reboot (including a complete power off) the machine, and see
if sdc comes back. If it does, do some tests, and then add back to the
array. If it survives, then carry on as normal.
2) If you are more cautious (and more prepared to spend the money rather
than risk the data), then purchase a replacement disk, and replace sdc
with the new disk. Prepare the drive/partition, and add it to the raid
array.
Please make sure you "Research SCT/ERC on this list"!!! before
purchasing the replacement drive. It is far better to buy the right
drive if possible.
Regards,
Adam
Thanks a lot,
Hans
# smartctl -a /dev/sdb
smartctl 6.0 2012-10-10 r3643 [x86_64-linux-3.7.10-1.45-desktop] (SUSE RPM)
Copyright (C) 2002-12, Bruce Allen, Christian Franke, www.smartmontools.org
=== START OF INFORMATION SECTION ===
Model Family: Seagate Barracuda 7200.14 (AF)
Device Model: ST1000DM003-1ER162
Serial Number: Z4Y6N2J3
LU WWN Device Id: 5 000c50 07afe5c18
Firmware Version: CC45
User Capacity: 1,000,204,886,016 bytes [1.00 TB]
Sector Sizes: 512 bytes logical, 4096 bytes physical
Rotation Rate: 7200 rpm
Device is: In smartctl database [for details use: -P show]
ATA Version is: ACS-2, ACS-3 T13/2161-D revision 3b
SATA Version is: SATA 3.1, 6.0 Gb/s (current: 6.0 Gb/s)
Local Time is: Mon Aug 3 21:52:32 2015 MDT
==> WARNING: A firmware update for this drive may be available,
see the following Seagate web pages:
http://knowledge.seagate.com/articles/en_US/FAQ/207931en
http://knowledge.seagate.com/articles/en_US/FAQ/223651en
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
General SMART Values:
Offline data collection status: (0x00) Offline data collection activity
was never started.
Auto Offline Data Collection: Disabled.
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: ( 80) seconds.
Offline data collection
capabilities: (0x73) SMART execute Offline immediate.
Auto Offline data collection on/off support.
Suspend Offline collection upon new
command.
No 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: ( 1) minutes.
Extended self-test routine
recommended polling time: ( 105) minutes.
Conveyance self-test routine
recommended polling time: ( 2) minutes.
SCT capabilities: (0x1085) SCT Status supported.
SMART Attributes Data Structure revision number: 10
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 111 100 006 Pre-fail Always - 39301104
3 Spin_Up_Time 0x0003 097 097 000 Pre-fail Always - 0
4 Start_Stop_Count 0x0032 100 100 020 Old_age Always - 20
5 Reallocated_Sector_Ct 0x0033 100 100 010 Pre-fail Always - 0
7 Seek_Error_Rate 0x000f 063 060 030 Pre-fail Always - 2152462
9 Power_On_Hours 0x0032 098 098 000 Old_age Always - 1872
10 Spin_Retry_Count 0x0013 100 100 097 Pre-fail Always - 0
12 Power_Cycle_Count 0x0032 100 100 020 Old_age Always - 20
183 Runtime_Bad_Block 0x0032 100 100 000 Old_age Always - 0
184 End-to-End_Error 0x0032 100 100 099 Old_age Always - 0
187 Reported_Uncorrect 0x0032 100 100 000 Old_age Always - 0
188 Command_Timeout 0x0032 100 100 000 Old_age Always - 0 0 0
189 High_Fly_Writes 0x003a 100 100 000 Old_age Always - 0
190 Airflow_Temperature_Cel 0x0022 068 064 045 Old_age Always - 32 (Min/Max 26/35)
191 G-Sense_Error_Rate 0x0032 100 100 000 Old_age Always - 0
192 Power-Off_Retract_Count 0x0032 100 100 000 Old_age Always - 0
193 Load_Cycle_Count 0x0032 093 093 000 Old_age Always - 15119
194 Temperature_Celsius 0x0022 032 040 000 Old_age Always - 32 (0 19 0 0 0)
197 Current_Pending_Sector 0x0012 100 100 000 Old_age Always - 0
198 Offline_Uncorrectable 0x0010 100 100 000 Old_age Offline - 0
199 UDMA_CRC_Error_Count 0x003e 200 200 000 Old_age Always - 0
240 Head_Flying_Hours 0x0000 100 253 000 Old_age Offline - 662h+04m+56.474s
241 Total_LBAs_Written 0x0000 100 253 000 Old_age Offline - 2212066311
242 Total_LBAs_Read 0x0000 100 253 000 Old_age Offline - 4204083236
SMART Error Log Version: 1
No Errors Logged
SMART Self-test log structure revision number 1
No self-tests have been logged. [To run self-tests, use: smartctl -t]
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.
# smartctl -a /dev/sdc
smartctl 6.0 2012-10-10 r3643 [x86_64-linux-3.7.10-1.45-desktop] (SUSE RPM)
Copyright (C) 2002-12, Bruce Allen, Christian Franke, www.smartmontools.org
Smartctl open device: /dev/sdc failed: No such device
On Aug 3, 2015, at 5:48 PM, Adam Goryachev <mailinglists@xxxxxxxxxxxxxxxxxxxxxx> wrote:
On 04/08/15 08:18, Hans Malissa wrote:
Hi everybody,
It looks like one of my disks in my RAID1 just failed:
[SNIP]
Are there any other tests I could run in order to figure out what’s going on? It looks like I will have to replace /dev/sdc1 with a new hard drive. What is the correct procedure to do so without loosing my data?
Have a look at dmesg or your system kernel logs for details.
Also, use smartctl to examine what the drive itself thinks.
Also, try to use dd to read/write the drive.
One common scenario is that you haven't configured the timing for the drive correctly, and the drive is working perfectly, but didn't respond to the kernel quickly enough. Research SCT/ERC on this list
Regards,
Adam
--
Adam Goryachev Website Managers www.websitemanagers.com.au
--
Adam Goryachev Website Managers www.websitemanagers.com.au
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