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Access to the disk on channel (??) is producing I/O errors
Hello,
We have a ReadyNAS Duo (Sparc) running the latest firmware which is generually used as a backup of other servers, using rsync to sync files overnight. The NAS has been running happily for the last year or so without any major issues.
A couple of times in the past we've had this message in the log, but last night it appeared 4 times in a single night.
Naturally the (??) is not very useful, looking at the SMART data for the drives, they appear to be OK without any major error numbers.
Does anyone know why it would report (??) instead of an actual drive channel, is it the actual drives that have an issue or not?
The NAS has become unresponsive a couple of times in the last few weeks where it refuses new ssh connections, even when the NAS is still running - I know this as we get emails from CRON tasks running even when new connections are refused.
Any help would be appreciated.
Thanks,
We have a ReadyNAS Duo (Sparc) running the latest firmware which is generually used as a backup of other servers, using rsync to sync files overnight. The NAS has been running happily for the last year or so without any major issues.
A couple of times in the past we've had this message in the log, but last night it appeared 4 times in a single night.
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.
Naturally the (??) is not very useful, looking at the SMART data for the drives, they appear to be OK without any major error numbers.
SMART Information for Disk 1
Model: WDC WD20EARS-00MVWB0
Serial: WD-WMAZA2739159
Firmware: 51.0AB51
SMART Attribute
Raw Read Error Rate 0
Spin Up Time 1008
Start Stop Count 24
Reallocated Sector Count 0
Seek Error Rate 0
Power On Hours 25160
Spin Retry Count 0
Calibration Retry Count 0
Power Cycle Count 22
Power-Off Retract Count 21
Load Cycle Count 791655
Temperature Celsius 35
Reallocated Event Count 0
Current Pending Sector 114
Offline Uncorrectable 38
UDMA CRC Error Count 0
Multi Zone Error Rate 188
ATA Error Count 12
Extended Attribute
Hot-add events 0
Hot-remove events 0
Lp stat events 73
Power glitches 0
Hard disk resets 135
Retries 135
Repaired sectors 0
SMART Information for Disk 2
Model: WDC WD20EARS-00MVWB0
Serial: WD-WMAZA2745609
Firmware: 51.0AB51
SMART Attribute
Raw Read Error Rate 0
Spin Up Time 1000
Start Stop Count 24
Reallocated Sector Count 0
Seek Error Rate 0
Power On Hours 25430
Spin Retry Count 0
Calibration Retry Count 0
Power Cycle Count 22
Power-Off Retract Count 21
Load Cycle Count 800745
Temperature Celsius 34
Reallocated Event Count 0
Current Pending Sector 0
Offline Uncorrectable 0
UDMA CRC Error Count 0
Multi Zone Error Rate 24
ATA Error Count 12
Extended Attribute
Hot-add events 0
Hot-remove events 0
Lp stat events 15
Power glitches 0
Hard disk resets 135
Retries 0
Repaired sectors 0
Does anyone know why it would report (??) instead of an actual drive channel, is it the actual drives that have an issue or not?
The NAS has become unresponsive a couple of times in the last few weeks where it refuses new ssh connections, even when the NAS is still running - I know this as we get emails from CRON tasks running even when new connections are refused.
Any help would be appreciated.
Thanks,
1 Reply
Replies have been turned off for this discussion
- The ?? means that the system doesn't know what drive is causing the root problem.
pending sector count of 114 and offline uncorrectable of 38 (drive 1) is not ok. Pending sectors are sectors that couldn't be read. (similar to reallocated sectors - but since it was a read, there was no point in reallocating). If it were me, I'd replace that drive.
Also keep an eye on the hard disk resets (135 on each). Not sure what is causing them - it could be the other issues issues reported with drive 1, or it could be something else.
BTW, since you have SSH installed, you should periodically check OS partition fullness.
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