So this morning I got this error: Unraid Skynetcache disk SMART health [5] Warning [SKYNET] - reallocated sector ct is 24. Fast forward a couple hours and I get this: fstrim: /mnt/skynetcache: FITRIM ioctl failed: Input/output error.

 

I logged in and noticed my drive dropped offline, but I can’t figure out why. I’ve uploaded my diagnostics too. 
 

it’s worth mentioning I’ve also been having intermittent issues with my /mnt/mediacache drive falling offline too. 

skynet-diagnostics-20230525-0813.zip

skynetcache1 dropped offline:

 

May 25 04:26:47 Skynet kernel: ata1: hard resetting link
May 25 04:26:52 Skynet kernel: ata1: softreset failed (device not ready)
May 25 04:26:52 Skynet kernel: ata1: reset failed, giving up
May 25 04:26:52 Skynet kernel: ata1.00: disable device
May 25 04:26:52 Skynet kernel: ata1: EH complete

 

Because it dropped there's no SMART, but this is usually a power/connection problem, check/replace cables and run a correcting scrub.

I’ll check the cables but they are relatively new, I was dealing with this months ago and replaced all the cables. Could my power supply be giving up ever so slightly? 

I rebooted the server and the drive is completely missing from the gui now. How do I proceed? 

12 minutes ago, JorgeB said:

check/replace cables

or power cycle the server so see if comes back, a reboot usually isn't enough when a drives drops.

 

 

Yeah, the reboot didn't work, now the drive won't even show up to mount. 

So I rebooted, tried several cables, data and power, tried different data ports and the reallocated sector count just kept climbing, and then a udma error started popping up. I swapped this with another ssd in the machine, and it still had issues while the other ssd was fine, so I think it’s safe to assume it’s the drive failing. 
 

I pulled the drive from the pool and am running the pool with one drive. If I stop and add a new ssd (240gb vs the current 256gb) can I just start it and do a scrub? 

You just need to assign the new device and start the array, the data will be duplicated there.

I ran into this issue again. This time with the OTHER ssd. This was the other one of the pair I originally had in here. Am I just really unlucky with having two SSD’s fail close to each other? 

the drive dropped offline. 

 

skynet-diagnostics-20230702-1659.zip

I am going to stop and replace the SSD with a different brand SSD.

Device dropped offline, could be cables, could be just bad devices.