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Readynas 214 with usb decryption key makes the fourth bay innaccessible
This is a bit strange. We have a Readynas 214 with 4x WD Red 4TB drives. We have encyrpted all the drives and use a USB stick to decypt on boot. When we boot the system with the USB stick in, the NAS...
We are running 6.8.1.
What actually happens in detail is this:
1. If you have the USB drive in when you switch on the NAS, the 4 bay lights flash, but as soon as the system starts booting we only have 3 bay lights - 4 is not lit and never works again.
2. To make it boot with all 4 drives I need to boot without the USB key and then we get all 4 drives. I then insert the USB stick when it says that decryption is required. I then remove the USB stick after it decrypts and the system works with all 4 drives.
Both behaviours are repeatable. The USB is plugged in the front USB port.
Looking at the successful boot dmseg.log and it has the following text in it:
[Thu Nov 23 15:15:30 2017] ata4: link is slow to respond, please be patient (ready=0)
[Thu Nov 23 15:15:34 2017] ata4: COMRESET failed (errno=-16)
[Thu Nov 23 15:15:40 2017] ata4: link is slow to respond, please be patient (ready=0)
[Thu Nov 23 15:15:44 2017] ata4: COMRESET failed (errno=-16)
[Thu Nov 23 15:15:45 2017] ata4: SATA link up 6.0 Gbps (SStatus 133 SControl 300)
[Thu Nov 23 15:15:45 2017] ata4.00: ATA-10: WDC WD40EFRX-68N32N0, 82.00A82, max UDMA/133
[Thu Nov 23 15:15:45 2017] ata4.00: 7814037168 sectors, multi 16: LBA48 NCQ (depth 31/32), AA
[Thu Nov 23 15:15:45 2017] ata4.00: configured for UDMA/133
at the same time in the failed log we see
[Thu Nov 23 15:10:20 2017] ata4: SATA link down (SStatus 1 SControl 310)
[Thu Nov 23 15:10:20 2017] ata4: EH complete
[Thu Nov 23 15:10:20 2017] ata4: exception Emask 0x10 SAct 0x0 SErr 0x4000000 action 0xe frozen
[Thu Nov 23 15:10:20 2017] ata4: irq_stat 0x00000040, connection status changed
[Thu Nov 23 15:10:20 2017] ata4: SError: { DevExch }
[Thu Nov 23 15:10:20 2017] ata4: limiting SATA link speed to 1.5 Gbps
[Thu Nov 23 15:10:20 2017] ata4: hard resetting link
Any ideas what could be happening?
Thanks for any ideas.
What model disks are you using? Is disk 4 different from the others?
Perhaps also check the SMART stats for the problem drive, and see if it is healthy.
Nope, they are all WD 4TB Reds. We have replaced the drive in bay 4 with a brand new WD 4TB Red and the behaviour is unchanged.
I'm not seeing ata4: limiting SATA link speed to 1.5 Gbps in my logs, and the WD40EFRX supports 6 gbps SATA.
But I am wondering if the main issue is more about timing - if the array isn't fully up when the NAS applies the decryption key.
Hopefully someone from Netgear will ask to see the logs.
Yeah thats what we think is going on as well, but it seems so fundamental that I find it hard to believe at the same time as running out of other options!
It would be good if there was an official response to this. Is there any way to escalate it?
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