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Forum Discussion
Detected increasing command timeouts errors
1. Have a ReadyNAS 316 that I have been running for many years without any odd ball issues. Recently I swapped out a 4TB Seagate HDD for a 12TB Seagate HDD. After a few weeks, it started generating "...
ReadyNAS 316.
Firmware level 6.10.2
All drives are Seagate IronWolf NAS.
Populated as follows.
Drive / Channel 1: 4TB ST4000DM000
Drive / Channel 2: 12TB ST12000VN0008
Drive / Channel 3: 4TB ST4000DM000
Drive / Channel 4: 8TB ST8000VN00022
Drive / Channel 5: 8TB ST8000VN00022
Drive / Channel 6: 8TB ST8000VN00022
It is only the 12TB drive (on both the original and on the RMA repacement) that is generating the "Detected increasing command timeouts errors".
In full..."Detected increasing command timeouts errors: [14] on disk 2 (Internal) [ST12000VN0008-2JH101, ZHZ1ENC9] 10 times in the past 30 days. This condition often indicates an impending failure. Be prepared to replace this disk to maintain data redundancy."
Thank you for the update.
I don't think it would be a power supply issue where the needed power is not met thus getting Command timeouts on the 12TB. But it just might be a possible cause.
Can you please send in the logs using a download link sent to me via PM.
If possible, kindly try our suggestion of doing a spare disk or switching the disk bays by turning off the NAS first just like what StephenB mentioned. This is to check if the Command timeouts follows the 12TB so we can at least confirm.
HTH
Regards
Yes, this error is not really symptomatic of any power issues. I suspect there is a firmware issue with the cache flush handling of the 12TB drive in the ReadyNAS 316.
I am running all 12TB drives in a new ReadyNAS 628x without any "increasing command timeouts errors" being reported on any of those drives. My ReadyNAS 316 however, has this one 12TB HDD in Disk / Channel 2 that is reporting increasing command timeouts errors" (reporitng on the original new drive a few weeks after it being inserted and then similarly also reporting on the RMA drive a few weeks after being inserted).
I note the logical suggestion to move the 12TB drive to a different slot and seeing if the problem follows the drive. I am not able to swap two drives without breaking the X-RAID (RAID 5). Also, I currently have no spare 8TB or 12TB HDDD to swap into Disk / Channel 2 slot in place of the current 12TB that Disk / Channel 2 is reporting . I will have to buy one.
If the issue is a firmware problem (or vice versa a disk problem), then simply swapping the dive to a new slot is not really a clear black and white conclusive "binary test" that pin points the drive being at fault. If the fault continues, it could still be firmware I/O handling related.
I will pass the logs to you via PM as requested. Thanks.
AT-ReadyNAS wrote:
I note the logical suggestion to move the 12TB drive to a different slot and seeing if the problem follows the drive. I am not able to swap two drives without breaking the X-RAID (RAID 5).
That's not correct. The system should properly assemble the array no matter that the slot order is.
We do recommend preserving slot order, since it is helpful for troubleshooting when something goes wrong. But you can power down, and exchange the disks in slot 2 and 3, and then power up again. Then after you've done enough testing, you can power down and put them back in the original order.
AT-ReadyNAS wrote:
I suspect there is a firmware issue with the cache flush handling of the 12TB drive in the ReadyNAS 316.
I am running all 12TB drives in a new ReadyNAS 628x without any "increasing command timeouts errors" being reported on any of those drives. My ReadyNAS 316 however, has this one 12TB HDD in Disk / Channel 2 that is reporting increasing command timeouts errors"
I really don't understand the rationale for your theory. The same disks are working in the RN628x, and the firmware is the same.
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