On 18-12-2013 07.08 -0500, Phil Turmel wrote:
> I'd let the sync continue until it fails or completes. And if it
> completes, exercise the array to see if it stays flaky. If it does not
> complete, start swapping parts in the system.
---end quoted text---
I'm responding to an old thread, but current problem. I started a RAID1 rebuild in mid-December, and it's still running - now with 2712 read errors - and counting. (I enclosed smartctl output).
# cat /proc/mdstat
Personalities : [raid1]
md0 : active raid1 sda1[0] sdb1[1]
521984 blocks [2/2] [UU]
md1 : active raid1 sda2[2] sdb2[1]
976237824 blocks [2/1] [_U]
[==============>......] recovery = 70.9% (692700480/976237824) finish=68.5min speed=68956K/sec
md0 is a boot partition, and md1 is the operating system.
I configured LVM on md1, and allocated 68GB (of 1TB):
# vgdisplay /dev/VolGroup00
VG Name VolGroup00
VG Size 931.00 GB
Alloc PE / Size 2176 / 68.00 GB
Free PE / Size 27616 / 863.00 GB
Currently, only ~5GB of the 1TB disk is used.
At this point, what is my best option for limiting downtime of the server (i.e. avoiding a rebuild)?
I added a drive (/dev/sdc) with identical geometry, and consider using dd, i.e.
# dd if=/dev/sdb of=/dev/sdc bs=4096 conv=sync,noerror
This may not be the most efficient method of transferring data, since .5% of the disk is used. But obviously, I'm not in a hurry.
Please excuse my ignorance, but after it's cloned, is it possible to add /dev/sdc2 to md1 while it's syncing (to /dev/sda2)? Or do I need to wait until /dev/sdb fails to replace it with /dev/sdc?
Thanks!
Julie
smartctl 6.2 2013-07-26 r3841 [x86_64-linux-2.6.18-238.12.1.el5] (local build)
Copyright (C) 2002-13, Bruce Allen, Christian Franke, www.smartmontools.org
=== START OF INFORMATION SECTION ===
Model Family: Seagate Barracuda ES.2
Device Model: ST31000340NS
Serial Number: 9QJ6Y79S
LU WWN Device Id: 5 000c50 01a89c17b
Firmware Version: SN06
User Capacity: 1,000,204,886,016 bytes [1.00 TB]
Sector Size: 512 bytes logical/physical
Rotation Rate: 7200 rpm
Device is: In smartctl database [for details use: -P show]
ATA Version is: ATA8-ACS T13/1699-D revision 4
SATA Version is: SATA 2.6, 3.0 Gb/s
Local Time is: Mon Jan 20 20:33:09 2014 PST
SMART support is: Available - device has SMART capability.
SMART support is: Enabled
AAM feature is: Unavailable
APM feature is: Unavailable
Rd look-ahead is: Enabled
Write cache is: Enabled
ATA Security is: Disabled, NOT FROZEN [SEC1]
Wt Cache Reorder: Unknown
=== START OF READ SMART DATA SECTION ===
SMART overall-health self-assessment test result: PASSED
General SMART Values:
Offline data collection status: (0x82) Offline data collection activity
was completed without error.
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: ( 625) 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: ( 1) minutes.
Extended self-test routine
recommended polling time: ( 220) minutes.
Conveyance self-test routine
recommended polling time: ( 2) minutes.
SCT capabilities: (0x103d) SCT Status supported.
SCT Error Recovery Control supported.
SCT Feature Control supported.
SCT Data Table supported.
SMART Attributes Data Structure revision number: 10
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME FLAGS VALUE WORST THRESH FAIL RAW_VALUE
1 Raw_Read_Error_Rate POSR-- 075 058 044 - 33516445
3 Spin_Up_Time PO---- 099 099 000 - 0
4 Start_Stop_Count -O--CK 100 100 020 - 36
5 Reallocated_Sector_Ct PO--CK 100 100 036 - 3
7 Seek_Error_Rate POSR-- 081 060 030 - 138049328
9 Power_On_Hours -O--CK 066 066 000 - 30400
10 Spin_Retry_Count PO--C- 100 100 097 - 0
12 Power_Cycle_Count -O--CK 100 037 020 - 36
184 End-to-End_Error -O--CK 100 100 099 - 0
187 Reported_Uncorrect -O--CK 092 092 000 - 8
188 Command_Timeout -O--CK 100 096 000 - 42950328381
189 High_Fly_Writes -O-RCK 100 100 000 - 0
190 Airflow_Temperature_Cel -O---K 079 060 045 - 21 (Min/Max 21/21)
194 Temperature_Celsius -O---K 021 040 000 - 21 (0 15 0 0 0)
195 Hardware_ECC_Recovered -O-RC- 064 048 000 - 33516445
197 Current_Pending_Sector -O--C- 100 100 000 - 1
198 Offline_Uncorrectable ----C- 100 100 000 - 1
199 UDMA_CRC_Error_Count -OSRCK 200 200 000 - 0
||||||_ K auto-keep
|||||__ C event count
||||___ R error rate
|||____ S speed/performance
||_____ O updated online
|______ P prefailure warning
General Purpose Log Directory Version 1
SMART Log Directory Version 1 [multi-sector log support]
Address Access R/W Size Description
0x00 GPL,SL R/O 1 Log Directory
0x01 GPL,SL R/O 1 Summary SMART error log
0x02 GPL,SL R/O 5 Comprehensive SMART error log
0x03 GPL,SL R/O 5 Ext. Comprehensive SMART error log
0x06 GPL,SL R/O 1 SMART self-test log
0x07 GPL,SL R/O 1 Extended self-test log
0x09 GPL,SL R/W 1 Selective self-test log
0x10 GPL,SL R/O 1 NCQ Command Error log
0x11 GPL,SL R/O 1 SATA Phy Event Counters
0x21 GPL,SL R/O 1 Write stream error log
0x22 GPL,SL R/O 1 Read stream error log
0x80-0x9f GPL,SL R/W 16 Host vendor specific log
0xa1 GPL,SL VS 20 Device vendor specific log
0xa2 GPL VS 2248 Device vendor specific log
0xa8 GPL,SL VS 65 Device vendor specific log
0xa9 GPL,SL VS 1 Device vendor specific log
0xb0 GPL VS 2864 Device vendor specific log
0xb6 GPL VS 1918 Device vendor specific log
0xbe-0xbf GPL VS 65535 Device vendor specific log
0xe0 GPL,SL R/W 1 SCT Command/Status
0xe1 GPL,SL R/W 1 SCT Data Transfer
SMART Extended Comprehensive Error Log Version: 1 (5 sectors)
Device Error Count: 2712 (device log contains only the most recent 20 errors)
CR = Command Register
FEATR = Features Register
COUNT = Count (was: Sector Count) Register
LBA_48 = Upper bytes of LBA High/Mid/Low Registers ] ATA-8
LH = LBA High (was: Cylinder High) Register ] LBA
LM = LBA Mid (was: Cylinder Low) Register ] Register
LL = LBA Low (was: Sector Number) Register ]
DV = Device (was: Device/Head) Register
DC = Device Control Register
ER = Error register
ST = Status register
Powered_Up_Time is measured from power on, and printed as
DDd+hh:mm:SS.sss where DD=days, hh=hours, mm=minutes,
SS=sec, and sss=millisec. It "wraps" after 49.710 days.
Error 2712 [11] occurred at disk power-on lifetime: 30399 hours (1266 days + 15 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 74 5c d2 9b 00 00 Error: UNC at LBA = 0x745cd29b = 1952240283
Commands leading to the command that caused the error were:
CR FEATR COUNT LBA_48 LH LM LL DV DC Powered_Up_Time Command/Feature_Name
-- == -- == -- == == == -- -- -- -- -- --------------- --------------------
60 00 00 00 08 00 00 74 5c d2 99 40 00 12d+15:29:19.453 READ FPDMA QUEUED
27 00 00 00 00 00 00 00 00 00 00 e0 00 12d+15:29:19.425 READ NATIVE MAX ADDRESS EXT [OBS-ACS-3]
ec 00 00 00 00 00 00 00 00 00 00 a0 00 12d+15:29:19.424 IDENTIFY DEVICE
ef 00 03 00 46 00 00 00 00 00 00 a0 00 12d+15:29:19.411 SET FEATURES [Set transfer mode]
27 00 00 00 00 00 00 00 00 00 00 e0 00 12d+15:29:19.383 READ NATIVE MAX ADDRESS EXT [OBS-ACS-3]
Error 2711 [10] occurred at disk power-on lifetime: 30399 hours (1266 days + 15 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 74 5c d2 9b 00 00 Error: UNC at LBA = 0x745cd29b = 1952240283
Commands leading to the command that caused the error were:
CR FEATR COUNT LBA_48 LH LM LL DV DC Powered_Up_Time Command/Feature_Name
-- == -- == -- == == == -- -- -- -- -- --------------- --------------------
60 00 00 00 08 00 00 74 5c d2 99 40 00 12d+15:29:16.279 READ FPDMA QUEUED
27 00 00 00 00 00 00 00 00 00 00 e0 00 12d+15:29:16.252 READ NATIVE MAX ADDRESS EXT [OBS-ACS-3]
ec 00 00 00 00 00 00 00 00 00 00 a0 00 12d+15:29:16.250 IDENTIFY DEVICE
ef 00 03 00 46 00 00 00 00 00 00 a0 00 12d+15:29:16.237 SET FEATURES [Set transfer mode]
27 00 00 00 00 00 00 00 00 00 00 e0 00 12d+15:29:16.210 READ NATIVE MAX ADDRESS EXT [OBS-ACS-3]
Error 2710 [9] occurred at disk power-on lifetime: 30399 hours (1266 days + 15 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 74 5c d2 9b 00 00 Error: UNC at LBA = 0x745cd29b = 1952240283
Commands leading to the command that caused the error were:
CR FEATR COUNT LBA_48 LH LM LL DV DC Powered_Up_Time Command/Feature_Name
-- == -- == -- == == == -- -- -- -- -- --------------- --------------------
60 00 00 00 08 00 00 74 5c d2 99 40 00 12d+15:29:13.115 READ FPDMA QUEUED
60 00 00 00 80 00 00 74 5c e2 01 40 00 12d+15:29:13.114 READ FPDMA QUEUED
27 00 00 00 00 00 00 00 00 00 00 e0 00 12d+15:29:13.087 READ NATIVE MAX ADDRESS EXT [OBS-ACS-3]
ec 00 00 00 00 00 00 00 00 00 00 a0 00 12d+15:29:13.085 IDENTIFY DEVICE
ef 00 03 00 46 00 00 00 00 00 00 a0 00 12d+15:29:13.072 SET FEATURES [Set transfer mode]
Error 2709 [8] occurred at disk power-on lifetime: 30399 hours (1266 days + 15 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 74 5c d2 9b 00 00 Error: UNC at LBA = 0x745cd29b = 1952240283
Commands leading to the command that caused the error were:
CR FEATR COUNT LBA_48 LH LM LL DV DC Powered_Up_Time Command/Feature_Name
-- == -- == -- == == == -- -- -- -- -- --------------- --------------------
60 00 00 00 08 00 00 74 5c d2 99 40 00 12d+15:29:09.933 READ FPDMA QUEUED
27 00 00 00 00 00 00 00 00 00 00 e0 00 12d+15:29:09.905 READ NATIVE MAX ADDRESS EXT [OBS-ACS-3]
ec 00 00 00 00 00 00 00 00 00 00 a0 00 12d+15:29:09.904 IDENTIFY DEVICE
ef 00 03 00 46 00 00 00 00 00 00 a0 00 12d+15:29:09.890 SET FEATURES [Set transfer mode]
27 00 00 00 00 00 00 00 00 00 00 e0 00 12d+15:29:09.863 READ NATIVE MAX ADDRESS EXT [OBS-ACS-3]
Error 2708 [7] occurred at disk power-on lifetime: 30399 hours (1266 days + 15 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 74 5c d2 9b 00 00 Error: UNC at LBA = 0x745cd29b = 1952240283
Commands leading to the command that caused the error were:
CR FEATR COUNT LBA_48 LH LM LL DV DC Powered_Up_Time Command/Feature_Name
-- == -- == -- == == == -- -- -- -- -- --------------- --------------------
60 00 00 00 08 00 00 74 5c d2 99 40 00 12d+15:29:06.793 READ FPDMA QUEUED
27 00 00 00 00 00 00 00 00 00 00 e0 00 12d+15:29:06.765 READ NATIVE MAX ADDRESS EXT [OBS-ACS-3]
ec 00 00 00 00 00 00 00 00 00 00 a0 00 12d+15:29:06.763 IDENTIFY DEVICE
ef 00 03 00 46 00 00 00 00 00 00 a0 00 12d+15:29:06.750 SET FEATURES [Set transfer mode]
27 00 00 00 00 00 00 00 00 00 00 e0 00 12d+15:29:06.723 READ NATIVE MAX ADDRESS EXT [OBS-ACS-3]
Error 2707 [6] occurred at disk power-on lifetime: 30399 hours (1266 days + 15 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 74 5c d2 9b 00 00 Error: UNC at LBA = 0x745cd29b = 1952240283
Commands leading to the command that caused the error were:
CR FEATR COUNT LBA_48 LH LM LL DV DC Powered_Up_Time Command/Feature_Name
-- == -- == -- == == == -- -- -- -- -- --------------- --------------------
60 00 00 00 08 00 00 74 5c d2 99 40 00 12d+15:29:03.653 READ FPDMA QUEUED
60 00 00 00 08 00 00 74 5c d2 89 40 00 12d+15:29:03.645 READ FPDMA QUEUED
60 00 00 00 08 00 00 74 5c d2 81 40 00 12d+15:29:03.638 READ FPDMA QUEUED
ea 00 00 00 00 00 00 00 00 00 00 a0 00 12d+15:29:03.629 FLUSH CACHE EXT
61 00 00 00 08 00 00 74 70 59 01 40 00 12d+15:29:03.628 WRITE FPDMA QUEUED
Error 2706 [5] occurred at disk power-on lifetime: 30399 hours (1266 days + 15 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 74 5c d2 9b 00 00 Error: UNC at LBA = 0x745cd29b = 1952240283
Commands leading to the command that caused the error were:
CR FEATR COUNT LBA_48 LH LM LL DV DC Powered_Up_Time Command/Feature_Name
-- == -- == -- == == == -- -- -- -- -- --------------- --------------------
60 00 00 00 80 00 00 74 5c d2 81 40 00 12d+15:29:00.466 READ FPDMA QUEUED
60 00 00 00 80 00 00 74 5c d3 81 40 00 12d+15:29:00.465 READ FPDMA QUEUED
60 00 00 00 80 00 00 74 5c d4 01 40 00 12d+15:29:00.465 READ FPDMA QUEUED
60 00 00 00 80 00 00 74 5c d4 81 40 00 12d+15:29:00.464 READ FPDMA QUEUED
60 00 00 00 80 00 00 74 5c d5 01 40 00 12d+15:29:00.464 READ FPDMA QUEUED
Error 2705 [4] occurred at disk power-on lifetime: 30399 hours (1266 days + 15 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 74 5c d2 9b 00 00 Error: UNC at LBA = 0x745cd29b = 1952240283
Commands leading to the command that caused the error were:
CR FEATR COUNT LBA_48 LH LM LL DV DC Powered_Up_Time Command/Feature_Name
-- == -- == -- == == == -- -- -- -- -- --------------- --------------------
60 00 00 00 80 00 00 74 5c d3 01 40 00 12d+15:28:57.308 READ FPDMA QUEUED
60 00 00 00 80 00 00 74 5c d5 01 40 00 12d+15:28:57.307 READ FPDMA QUEUED
60 00 00 00 80 00 00 74 5c d4 81 40 00 12d+15:28:57.307 READ FPDMA QUEUED
60 00 00 00 80 00 00 74 5c d4 01 40 00 12d+15:28:57.307 READ FPDMA QUEUED
60 00 00 00 80 00 00 74 5c d3 81 40 00 12d+15:28:57.307 READ FPDMA QUEUED
SMART Extended Self-test Log Version: 1 (1 sectors)
Num Test_Description Status Remaining LifeTime(hours) LBA_of_first_error
# 1 Short offline Aborted by host 60% 29560 -
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.
SCT Status Version: 3
SCT Version (vendor specific): 522 (0x020a)
SCT Support Level: 1
Device State: Active (0)
Current Temperature: 21 Celsius
Power Cycle Min/Max Temperature: 21/21 Celsius
Lifetime Min/Max Temperature: 15/40 Celsius
Under/Over Temperature Limit Count: 0/1
SCT Temperature History Version: 2
Temperature Sampling Period: 10 minutes
Temperature Logging Interval: 10 minutes
Min/Max recommended Temperature: 0/ 0 Celsius
Min/Max Temperature Limit: 0/ 0 Celsius
Temperature History Size (Index): 128 (114)
Index Estimated Time Temperature Celsius
115 2014-01-19 23:20 21 **
... ..( 96 skipped). .. **
84 2014-01-20 15:30 21 **
85 2014-01-20 15:40 22 ***
... ..( 5 skipped). .. ***
91 2014-01-20 16:40 22 ***
92 2014-01-20 16:50 21 **
... ..( 14 skipped). .. **
107 2014-01-20 19:20 21 **
108 2014-01-20 19:30 22 ***
109 2014-01-20 19:40 22 ***
110 2014-01-20 19:50 22 ***
111 2014-01-20 20:00 21 **
112 2014-01-20 20:10 22 ***
113 2014-01-20 20:20 ? -
114 2014-01-20 20:30 21 **
SCT Error Recovery Control:
Read: 100 (10.0 seconds)
Write: 100 (10.0 seconds)
Device Statistics (GP Log 0x04) not supported
SATA Phy Event Counters (GP Log 0x11)
ID Size Value Description
0x000a 2 1 Device-to-host register FISes sent due to a COMRESET
0x0001 2 0 Command failed due to ICRC error
0x0003 2 0 R_ERR response for device-to-host data FIS
0x0004 2 0 R_ERR response for host-to-device data FIS
0x0006 2 0 R_ERR response for device-to-host non-data FIS
0x0007 2 0 R_ERR response for host-to-device non-data FIS
