February 28, 20251 yr Hello, A couple days I awoke to all my dockers being offline. Checked, and for whatever reason the NVMe disk that has the docker image, all my plex config data, and VMs wasn't showing up in pool devices, unsassigned devices, or under tools---system devices. I feared a drive failure. I didn't have physical access at the time, so I attempted a couple of reboots remotely to to avail. Today I had physical access again, so I pulled my server and reseated the NVNe drive. AMAZING! The devices is now showing up in unassigned devices. I can brows it with MC, and I'm currently making a backup of it on my array. The problem is that it's no longer listed under POOL DEVICES, so its not linked to anything. Docker services won't start, because it has no idea where the docker image is. How to I configure it so it's back in Pool Devices as before without having to reconfigure everything from scratch? Thanks!!!!
March 1, 20251 yr Author Dug through my logs, and the relevant error is: emhttpd: no mountpoint along path: /mnt/cache_docker_vms/system/docker "cache_docker_vms" was the name of the "failed" NVMePool Device. If I add a pool device with this exact name, will it reformat the drive?
March 1, 20251 yr Community Expert 7 hours ago, AW139 said: If I add a pool device with this exact name, will it reformat the drive? If it's an existing pool you can import it, you can also just correct the docker image path in Settings - Docker
March 1, 20251 yr Author I added back the pool device using the identical name as before, and right away all services came back online. I didn't need to change anything else, which was great. The system log did show a number of errors on the nvme drive, but since it's been rebooted I didn't capture any of those errors to show them here. SMART test on the drive now shows nothing wrong, so I guess I just got insanely lucky. I have a backup now of the entire drive, so if it were to fail again I can restore from backup. No idea if this was a one-time problem or signs of an impending drive failure, but either way I'm very happy I didn't lose everything.
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