wintermute000
Explorer
- Joined
- Aug 8, 2014
- Messages
- 83
I got an email this morning about an unrecoverable error on my main RAIDZ2 array.
When I check zpool status, the only thing I see is 1 checksum error. Is this a problem or is 1 error (the first I've received in ~18 months) and the minor scrub repair insignificant?
Freenas 9.3, Asrock C2550D4I, 16Gb ECC DDR3, 6x4Tb HGST Deskstar NAS HDD in RAIDZ2, 1x256Gb Sandisk Ultra Plus SSD in ISCSI extent, 1x 256Gb Sandisk Ultra Plus SSD scratch disk, Seasonic SSR-450RM 450W, Fractal Design Define R2
[root@freenas] ~# zpool status -v
pool: bigdisk
state: ONLINE
status: One or more devices has experienced an unrecoverable error. An
attempt was made to correct the error. Applications are unaffected.
action: Determine if the device needs to be replaced, and clear the errors
using 'zpool clear' or replace the device with 'zpool replace'.
see: http://illumos.org/msg/ZFS-8000-9P
scan: scrub repaired 32K in 8h54m with 0 errors on Tue Mar 15 09:55:18 2016
config:
NAME STATE READ WRITE CKSUM
bigdisk ONLINE 0 0 0
raidz2-0 ONLINE 0 0 0
gptid/6f446c94-2f59-11e4-81f2-d05099264f06 ONLINE 0 0 0
gptid/6fbe1f96-2f59-11e4-81f2-d05099264f06 ONLINE 0 0 0
gptid/70290449-2f59-11e4-81f2-d05099264f06 ONLINE 0 0 0
gptid/709666da-2f59-11e4-81f2-d05099264f06 ONLINE 0 0 0
gptid/70f9921f-2f59-11e4-81f2-d05099264f06 ONLINE 0 0 1
gptid/71633243-2f59-11e4-81f2-d05099264f06 ONLINE 0 0 0
errors: No known data errors
Note a few days ago I did get a smart error on this drive (UDMA_CRC_Error_Count), but again, the counter is only 1. I'm thinking this is the culprit of the error and the scrub fixed the corrupted data?
[root@freenas] ~# smartctl -A /dev/ada4
smartctl 6.3 2014-07-26 r3976 [FreeBSD 9.3-RELEASE-p31 amd64] (local build)
Copyright (C) 2002-14, Bruce Allen, Christian Franke, www.smartmontools.org
=== 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 0x000b 100 100 016 Pre-fail Always - 0
2 Throughput_Performance 0x0005 137 137 054 Pre-fail Offline - 79
3 Spin_Up_Time 0x0007 124 124 024 Pre-fail Always - 621 (Average 621)
4 Start_Stop_Count 0x0012 100 100 000 Old_age Always - 881
5 Reallocated_Sector_Ct 0x0033 100 100 005 Pre-fail Always - 0
7 Seek_Error_Rate 0x000b 100 100 067 Pre-fail Always - 0
8 Seek_Time_Performance 0x0005 121 121 020 Pre-fail Offline - 34
9 Power_On_Hours 0x0012 099 099 000 Old_age Always - 13081
10 Spin_Retry_Count 0x0013 100 100 060 Pre-fail Always - 0
12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 44
192 Power-Off_Retract_Count 0x0032 093 093 000 Old_age Always - 9109
193 Load_Cycle_Count 0x0012 093 093 000 Old_age Always - 9109
194 Temperature_Celsius 0x0002 171 171 000 Old_age Always - 35 (Min/Max 17/59)
196 Reallocated_Event_Count 0x0032 100 100 000 Old_age Always - 0
197 Current_Pending_Sector 0x0022 100 100 000 Old_age Always - 0
198 Offline_Uncorrectable 0x0008 100 100 000 Old_age Offline - 0
199 UDMA_CRC_Error_Count 0x000a 200 200 000 Old_age Always - 1
When I check zpool status, the only thing I see is 1 checksum error. Is this a problem or is 1 error (the first I've received in ~18 months) and the minor scrub repair insignificant?
Freenas 9.3, Asrock C2550D4I, 16Gb ECC DDR3, 6x4Tb HGST Deskstar NAS HDD in RAIDZ2, 1x256Gb Sandisk Ultra Plus SSD in ISCSI extent, 1x 256Gb Sandisk Ultra Plus SSD scratch disk, Seasonic SSR-450RM 450W, Fractal Design Define R2
[root@freenas] ~# zpool status -v
pool: bigdisk
state: ONLINE
status: One or more devices has experienced an unrecoverable error. An
attempt was made to correct the error. Applications are unaffected.
action: Determine if the device needs to be replaced, and clear the errors
using 'zpool clear' or replace the device with 'zpool replace'.
see: http://illumos.org/msg/ZFS-8000-9P
scan: scrub repaired 32K in 8h54m with 0 errors on Tue Mar 15 09:55:18 2016
config:
NAME STATE READ WRITE CKSUM
bigdisk ONLINE 0 0 0
raidz2-0 ONLINE 0 0 0
gptid/6f446c94-2f59-11e4-81f2-d05099264f06 ONLINE 0 0 0
gptid/6fbe1f96-2f59-11e4-81f2-d05099264f06 ONLINE 0 0 0
gptid/70290449-2f59-11e4-81f2-d05099264f06 ONLINE 0 0 0
gptid/709666da-2f59-11e4-81f2-d05099264f06 ONLINE 0 0 0
gptid/70f9921f-2f59-11e4-81f2-d05099264f06 ONLINE 0 0 1
gptid/71633243-2f59-11e4-81f2-d05099264f06 ONLINE 0 0 0
errors: No known data errors
Note a few days ago I did get a smart error on this drive (UDMA_CRC_Error_Count), but again, the counter is only 1. I'm thinking this is the culprit of the error and the scrub fixed the corrupted data?
[root@freenas] ~# smartctl -A /dev/ada4
smartctl 6.3 2014-07-26 r3976 [FreeBSD 9.3-RELEASE-p31 amd64] (local build)
Copyright (C) 2002-14, Bruce Allen, Christian Franke, www.smartmontools.org
=== 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 0x000b 100 100 016 Pre-fail Always - 0
2 Throughput_Performance 0x0005 137 137 054 Pre-fail Offline - 79
3 Spin_Up_Time 0x0007 124 124 024 Pre-fail Always - 621 (Average 621)
4 Start_Stop_Count 0x0012 100 100 000 Old_age Always - 881
5 Reallocated_Sector_Ct 0x0033 100 100 005 Pre-fail Always - 0
7 Seek_Error_Rate 0x000b 100 100 067 Pre-fail Always - 0
8 Seek_Time_Performance 0x0005 121 121 020 Pre-fail Offline - 34
9 Power_On_Hours 0x0012 099 099 000 Old_age Always - 13081
10 Spin_Retry_Count 0x0013 100 100 060 Pre-fail Always - 0
12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 44
192 Power-Off_Retract_Count 0x0032 093 093 000 Old_age Always - 9109
193 Load_Cycle_Count 0x0012 093 093 000 Old_age Always - 9109
194 Temperature_Celsius 0x0002 171 171 000 Old_age Always - 35 (Min/Max 17/59)
196 Reallocated_Event_Count 0x0032 100 100 000 Old_age Always - 0
197 Current_Pending_Sector 0x0022 100 100 000 Old_age Always - 0
198 Offline_Uncorrectable 0x0008 100 100 000 Old_age Offline - 0
199 UDMA_CRC_Error_Count 0x000a 200 200 000 Old_age Always - 1