ReadyNAS Duo freezing - Access to the disk on channel (??)

[Fedaykin]

I'm new to this form and new to viewing the logs for my ReadyNAS.

My ReadyNAS Duo V1 will run for a few days and my backup software complains that it can get read access intermittently. I'm trying to figure out if a disk is bad (If so, which one?) or is my ReadyNAS itself failing?

Log says: "Access to the disk on channel (??) is producing I/O errors. Although the array is still redundant, please replace this drive as soon as possible, as it is likely to fail soon."

After digging around a bit I found an ecounter with this: 0_sata_lp_stat: 5316 - Is that disk 1 telling me it's bad?


Any help is much appreciated. I've been struggling with this for a week before finding this forum!

[ReadySECURE]

Your second disk failed.
You need to replace disk 2.


***** smartctl output for hdc *****

smartctl 5.42 2011-10-20 r3458 [padre-linux-2.6.17.14ReadyNAS] (local build)
Copyright (C) 2002-11 by Bruce Allen, http://smartmontools.sourceforge.net

=== START OF INFORMATION SECTION ===
Model Family: Western Digital Caviar Green (Adv. Format)
Device Model: WDC WD20EARS-22MVWB0
Serial Number: WD-WMAZA4823716
LU WWN Device Id: 5 0014ee 60142015f
Firmware Version: 51.0AB51
User Capacity: 2,000,398,934,016 bytes [2.00 TB]
Sector Sizes: 512 bytes logical, 4096 bytes physical
Device is: In smartctl database [for details use: -P show]
ATA Version is: 8
ATA Standard is: Exact ATA specification draft version not indicated
Local Time is: Mon Sep 23 17:34:11 2013 CDT
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: (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: (36480) 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: ( 255) minutes.
Conveyance self-test routine
recommended polling time: ( 5) minutes.
SCT capabilities: (0x3035) SCT Status 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 199 199 051 Pre-fail Always - 797
3 Spin_Up_Time 0x0027 253 253 021 Pre-fail Always - 991
4 Start_Stop_Count 0x0032 100 100 000 Old_age Always - 22
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 079 079 000 Old_age Always - 15581
10 Spin_Retry_Count 0x0032 100 253 000 Old_age Always - 0
11 Calibration_Retry_Count 0x0032 100 253 000 Old_age Always - 0
12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 20
192 Power-Off_Retract_Count 0x0032 200 200 000 Old_age Always - 19
193 Load_Cycle_Count 0x0032 001 001 000 Old_age Always - 777512
194 Temperature_Celsius 0x0022 113 104 000 Old_age Always - 37
196 Reallocated_Event_Count 0x0032 200 200 000 Old_age Always - 0
197 Current_Pending_Sector 0x0032 200 001 000 Old_age Always - 2
198 Offline_Uncorrectable 0x0030 200 200 000 Old_age Offline - 35
199 UDMA_CRC_Error_Count 0x0032 200 200 000 Old_age Always - 0
200 Multi_Zone_Error_Rate 0x0008 200 200 000 Old_age Offline - 47

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 output for hde *****

smartctl 5.42 2011-10-20 r3458 [padre-linux-2.6.17.14ReadyNAS] (local build)
Copyright (C) 2002-11 by Bruce Allen, http://smartmontools.sourceforge.net

Smartctl: Device Read Identity Failed: Input/output error

A mandatory SMART command failed: exiting. To continue, add one or more '-T permissive' options.

[ReadySECURE]

In addition, your first disk is counting up errors. Your best bet is to clone disk 1 to a new disk and replace disk 2 by resyncing.

[Fedaykin]

I'm sorry guys, I goofed this up by pull disk 2 out before I downloaded the log files and sent them to you. I was going to see if it would behave with one disk in at a time. I pulled disk 2 about 15 minutes before downloading the logs.