Table of Contents
Troubleshooting RAID
If you've installed RAID1 arrays you will have done so in anticipation of hard drives failing. I encountered problems with the Logical Volumes that I have sitting on top/over the two RAID1 arrays that I have not being detected. The specific error messages were about a physical volume (PV) not being detected and looked like this on trying to start /etc/init.d/lvm restart…
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# /etc/init.d/lvm restart * Setting up the Logical Volume Manager ... No device found for PV JqPNBk-noWD-H6HZ-foaW-RrbJ-92Iu-GeEvPn. No device found for PV JqPNBk-noWD-H6HZ-foaW-RrbJ-92Iu-GeEvPn. No device found for PV JqPNBk-noWD-H6HZ-foaW-RrbJ-92Iu-GeEvPn. No device found for PV JqPNBk-noWD-H6HZ-foaW-RrbJ-92Iu-GeEvPn. No device found for PV JqPNBk-noWD-H6HZ-foaW-RrbJ-92Iu-GeEvPn. No device found for PV JqPNBk-noWD-H6HZ-foaW-RrbJ-92Iu-GeEvPn. No device found for PV JqPNBk-noWD-H6HZ-foaW-RrbJ-92Iu-GeEvPn. No device found for PV JqPNBk-noWD-H6HZ-foaW-RrbJ-92Iu-GeEvPn. No device found for PV JqPNBk-noWD-H6HZ-foaW-RrbJ-92Iu-GeEvPn. Refusing activation of partial LV vg/pics. Use '--activationmode partial' to override. Refusing activation of partial LV vg/video. Use '--activationmode partial' to override. Refusing activation of partial LV vg/music. Use '--activationmode partial' to override. * Failed to setup the LVM [ !! ] * ERROR: lvm failed to start # /etc/init.d/mdadm restart * Stopping mdadm monitor ... [ ok ] * Setting up the Logical Volume Manager ... No device found for PV JqPNBk-noWD-H6HZ-foaW-RrbJ-92Iu-GeEvPn. No device found for PV JqPNBk-noWD-H6HZ-foaW-RrbJ-92Iu-GeEvPn. No device found for PV JqPNBk-noWD-H6HZ-foaW-RrbJ-92Iu-GeEvPn. No device found for PV JqPNBk-noWD-H6HZ-foaW-RrbJ-92Iu-GeEvPn. No device found for PV JqPNBk-noWD-H6HZ-foaW-RrbJ-92Iu-GeEvPn. No device found for PV JqPNBk-noWD-H6HZ-foaW-RrbJ-92Iu-GeEvPn. No device found for PV JqPNBk-noWD-H6HZ-foaW-RrbJ-92Iu-GeEvPn. No device found for PV JqPNBk-noWD-H6HZ-foaW-RrbJ-92Iu-GeEvPn. No device found for PV JqPNBk-noWD-H6HZ-foaW-RrbJ-92Iu-GeEvPn. Refusing activation of partial LV vg/pics. Use '--activationmode partial' to override. Refusing activation of partial LV vg/video. Use '--activationmode partial' to override. Refusing activation of partial LV vg/music. Use '--activationmode partial' to override. * Failed to setup the LVM [ !! ] * ERROR: lvm failed to start * Starting mdadm monitor ... [ ok ]
Software
Theres a host of programs that you can use to help trouble shoot and fix harddrives make sure they're installed first, chances are sys-fs/mdadm will already be on your system as you will have needed it to setup your RAID array in the first place, but you may not have sys-apps/smartmontools which is a program for monitoring the state of hard drives.
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emerge -av sys-apps/smartmontools sys-fs/mdadm
RAID - Checking
Hard Drives - Checking
Catching Errors Earlier
I was rightly advised that I should configure sys-fs/mdadm and sys-apps/smartmonools to send emails when errors occur so that they can be addressed as early as possible. A quick search led to Using mdadm to send e-mail alerts for RAID failures.
RAID
First step is to identify the UUID of the RAID arrays you are using, this is pretty straight forward…
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# mdadm --examine /dev/sd* | grep -i uuid UUID : 1c2d7311:c6b39a77:188edc34:4aa1c004 UUID : 1c2d7311:c6b39a77:188edc34:4aa1c004 UUID : 1072c19c:6a50e9c5:188edc34:4aa1c004 UUID : 1072c19c:6a50e9c5:188edc34:4aa1c004
Now you know the UUID you can modify /etc/mdadm.conf
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# When used in --follow (aka --monitor) mode, mdadm needs a # mail address and/or a program. This can be given with "mailaddr" # and "program" lines to that monitoring can be started using MAILADDR your.email@ddress.com
That should suffice since the /etc/init.d/mdadm init script starts mdadm with the --monitor flag.
SMART
sys-fs/smartmontools are a suite of tools that utilise Self-Monitoring, Analysis and Reporting Technology (SMART) features of hard disk drives and solid state drives for monitoring the health of the drives. As with mdadm you can add an email address to the configuration file /etc/smartd.conf to ensure that you get emails when errors and problems are detected.
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## Your email address it should preceed 'DEVICESCAN' since that halts reading of subsequent lines ## and tells smartd to start scanning all devices DEFAULT -H -m your.email@ddress.com DEVICESCAN
Errors
I encountered some errors on one of my RAID drives after running `hw-probe`, which reported…
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Error 58 [9] occurred at disk power-on lifetime: 36301 hours (1512 days + 13 hours) When the command that caused the error occurred, the device was active or idle. After command completion occurred, registers were: ER -- ST COUNT LBA_48 LH LM LL DV DC -- -- -- == -- == == == -- -- -- -- -- 40 -- 51 00 00 00 00 05 45 21 80 40 00 Error: UNC at LBA = 0x05452180 = 88416640
…for various sectors (five in total). Searching around this is a read error so I initiated a full scan as the post advises.
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smartctl -t long /dev/sdc smartctl 7.1 2019-12-30 r5022 [x86_64-linux-5.7.0-gentoo] (local build) Copyright (C) 2002-19, Bruce Allen, Christian Franke, www.smartmontools.org === START OF OFFLINE IMMEDIATE AND SELF-TEST SECTION === Sending command: "Execute SMART Extended self-test routine immediately in off-line mode". Drive command "Execute SMART Extended self-test routine immediately in off-line mode" successful. Testing has begun. Please wait 402 minutes for test to complete. Test will complete after Sun Jun 7 04:07:14 2020 BST Use smartctl -X to abort test.
Having complete the long test I ran checks again and…
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smartctl 7.1 2019-12-30 r5022 [x86_64-linux-5.7.2-gentoo] (local build) Copyright (C) 2002-19, Bruce Allen, Christian Franke, www.smartmontools.org === START OF INFORMATION SECTION === Model Family: Western Digital Red Device Model: WDC WD30EFRX-68EUZN0 Serial Number: WD-WMC4N0D6M4E0 LU WWN Device Id: 5 0014ee 003dfdf3f Firmware Version: 82.00A82 User Capacity: 3,000,592,982,016 bytes [3.00 TB] Sector Sizes: 512 bytes logical, 4096 bytes physical Rotation Rate: 5400 rpm Device is: In smartctl database [for details use: -P show] ATA Version is: ACS-2 (minor revision not indicated) SATA Version is: SATA 3.0, 6.0 Gb/s (current: 6.0 Gb/s) Local Time is: Wed Jun 17 18:03:46 2020 BST 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: (40080) 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: ( 402) minutes. Conveyance self-test routine recommended polling time: ( 5) minutes. SCT capabilities: (0x703d) SCT Status supported. SCT Error Recovery Control supported. SCT Feature Control supported. SCT Data Table supported. 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 0x002f 200 200 051 Pre-fail Always - 58 3 Spin_Up_Time 0x0027 179 176 021 Pre-fail Always - 6025 4 Start_Stop_Count 0x0032 099 099 000 Old_age Always - 1372 5 Reallocated_Sector_Ct 0x0033 200 200 140 Pre-fail Always - 0 7 Seek_Error_Rate 0x002e 200 200 000 Old_age Always - 0 9 Power_On_Hours 0x0032 049 049 000 Old_age Always - 37764 10 Spin_Retry_Count 0x0032 100 100 000 Old_age Always - 0 11 Calibration_Retry_Count 0x0032 100 100 000 Old_age Always - 0 12 Power_Cycle_Count 0x0032 099 099 000 Old_age Always - 1348 192 Power-Off_Retract_Count 0x0032 200 200 000 Old_age Always - 42 193 Load_Cycle_Count 0x0032 183 183 000 Old_age Always - 53786 194 Temperature_Celsius 0x0022 118 111 000 Old_age Always - 32 196 Reallocated_Event_Count 0x0032 200 200 000 Old_age Always - 0 197 Current_Pending_Sector 0x0032 200 200 000 Old_age Always - 1 198 Offline_Uncorrectable 0x0030 100 253 000 Old_age Offline - 0 199 UDMA_CRC_Error_Count 0x0032 200 200 000 Old_age Always - 0 200 Multi_Zone_Error_Rate 0x0008 100 253 000 Old_age Offline - 0 SMART Error Log Version: 1 No Errors Logged SMART Self-test log structure revision number 1 Num Test_Description Status Remaining LifeTime(hours) LBA_of_first_error # 1 Extended offline Completed: read failure 90% 37564 85685760 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.
nvme drive
I also had some errors with my NVMe drive…
/dev/nvme0n1 smartctl 7.1 2019-12-30 r5022 [x86_64-linux-5.7.0-gentoo] (local build) Copyright (C) 2002-19, Bruce Allen, Christian Franke, www.smartmontools.org === START OF INFORMATION SECTION === Model Number: Samsung SSD 970 EVO 250GB Serial Number: -- Firmware Version: 1B2QEXE7 PCI Vendor/Subsystem ID: 0x144d IEEE OUI Identifier: 0x002538 Total NVM Capacity: 250,059,350,016 [250 GB] Unallocated NVM Capacity: 0 Controller ID: 4 Number of Namespaces: 1 Namespace 1 Size/Capacity: 250,059,350,016 [250 GB] Namespace 1 Utilization: 114,235,158,528 [114 GB] Namespace 1 Formatted LBA Size: 512 Namespace 1 IEEE EUI-64: 002538 ... Local Time is: Wed Jun 3 08:04:18 2020 BST Firmware Updates (0x16): 3 Slots, no Reset required Optional Admin Commands (0x0017): Security Format Frmw_DL Self_Test Optional NVM Commands (0x005f): Comp Wr_Unc DS_Mngmt Wr_Zero Sav/Sel_Feat Timestmp Maximum Data Transfer Size: 512 Pages Warning Comp. Temp. Threshold: 84 Celsius Critical Comp. Temp. Threshold: 84 Celsius Supported Power States St Op Max Active Idle RL RT WL WT Ent_Lat Ex_Lat 0 + 6.20W - - 0 0 0 0 0 0 1 + 4.30W - - 1 1 1 1 0 0 2 + 2.10W - - 2 2 2 2 0 0 3 - 0.0400W - - 3 3 3 3 210 1200 4 - 0.0050W - - 4 4 4 4 2000 8000 Supported LBA Sizes (NSID 0x1) Id Fmt Data Metadt Rel_Perf 0 + 512 0 0 === START OF SMART DATA SECTION === SMART overall-health self-assessment test result: PASSED SMART/Health Information (NVMe Log 0x02) Critical Warning: 0x00 Temperature: 39 Celsius Available Spare: 99% Available Spare Threshold: 10% Percentage Used: 1% Data Units Read: 117,513,999 [60.1 TB] Data Units Written: 10,229,263 [5.23 TB] Host Read Commands: 1,019,745,877 Host Write Commands: 262,947,061 Controller Busy Time: 3,266 Power Cycles: 284 Power On Hours: 7,705 Unsafe Shutdowns: 3 Media and Data Integrity Errors: 159 Error Information Log Entries: 159 Warning Comp. Temperature Time: 0 Critical Comp. Temperature Time: 0 Temperature Sensor 1: 39 Celsius Temperature Sensor 2: 48 Celsius Error Information (NVMe Log 0x01, max 64 entries) No Errors Logged
There are unsafe shutdowns and some media/data integrity errors and I've noticed some problems with this drive in the past, with file-system being repaired on rebooting. Something to keep an eye on and replace in the not too distant future I think .
