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? 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 -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
