Don Argo

Thank you everyone for your assistance. I ultimately threw in the towel and reformatted the drives. It was data I can recreate in less than a week (chia plots). It was ultimately more work to recover existing data than to just re-plot everything. Had it been important data, there would be backups in place. Again, thanks. I did learn from this exercise, and that's something. Don

Is there a chance of bringing the whole thing back online if I find another 3TB (or larger) device to replace the missing devid 5? Don

I believe I set them to Single Mode. At the time I believed that would allow the rest of the drives to mount as individual drives in the event of a drive failure. Does this mean all of my data is gone? I can recreate it, it's just time consuming. Devid 5 is a drive that went bad. It's not coming back online.

I'm hoping someone can help. I have a single device array, a 21 device pool for data and a 1 device pool for VMs. A device in the 21-device pool failed, so I selected "no device" and mounted the array, thinking btrfs would skip over the missing device and show the remaining data. However, since then the pool devices show "Unmountable: No file system". I've done some research but am not comfortable enough in Linux to figure this one out. Below is the output from a couple of commands I see frequently when troubleshooting this issue. After doing the btrfs-select-super command I stopped the array, unassigned devices, started the array, stopped the array, reassigned the devices and restarted the array. Unfortunately I still get the "Unmountable: No file system" error. I've attached Diagnostics as well. Can someone please help me figure this one out? root@unraid02:~# btrfs-select-super -s 1 /dev/sdh1 using SB copy 1, bytenr 67108864 root@unraid02:~# btrfs fi show Label: none uuid: 5ec35db6-28e3-4ca8-a71c-99f0c3267cc6 Total devices 1 FS bytes used 692.00KiB devid 1 size 20.00GiB used 4.52GiB path /dev/loop2 Label: none uuid: 29273544-12d6-436c-91d5-15b374827b3f Total devices 21 FS bytes used 70.56TiB devid 1 size 2.73TiB used 2.73TiB path /dev/sdt1 devid 2 size 2.73TiB used 2.73TiB path /dev/sdu1 devid 3 size 2.73TiB used 2.73TiB path /dev/sdv1 devid 4 size 2.73TiB used 2.73TiB path /dev/sdw1 devid 6 size 2.73TiB used 2.73TiB path /dev/sds1 devid 7 size 3.64TiB used 3.64TiB path /dev/sdh1 devid 8 size 3.64TiB used 3.64TiB path /dev/sdi1 devid 9 size 3.64TiB used 3.64TiB path /dev/sdj1 devid 10 size 3.64TiB used 3.64TiB path /dev/sdk1 devid 11 size 3.64TiB used 3.64TiB path /dev/sdl1 devid 12 size 3.64TiB used 3.64TiB path /dev/sdp1 devid 13 size 3.64TiB used 3.64TiB path /dev/sdr1 devid 14 size 3.64TiB used 3.64TiB path /dev/sdo1 devid 15 size 3.64TiB used 3.64TiB path /dev/sdn1 devid 16 size 3.64TiB used 3.64TiB path /dev/sde1 devid 17 size 3.64TiB used 3.64TiB path /dev/sdq1 devid 18 size 3.64TiB used 3.64TiB path /dev/sdd1 devid 19 size 3.64TiB used 3.64TiB path /dev/sdf1 devid 20 size 3.64TiB used 3.64TiB path /dev/sdm1 devid 21 size 3.64TiB used 3.64TiB path /dev/sdc1 *** Some devices missing unraid02-diagnostics-20230705-1803.zip