Here's how I got here:

1. I moved drives to different hardware (pc).
2. I had 2 drives in a pool on the old system. I moved only 1 of the drives from the pool over to the new server and realized my mistake. I added the 2nd drive from the pool to the new rig and would receive this drive will get wiped on array start message.
3. I followed directions in another post to remove the drives from the cache pool and start array without the drives. Stop array and then add them back in restarted array.  This seemed to work and the server seemed like it was in it's previous state. Later in the night I rebooted the server and both drives seemed to be wiped with no file system. Both of the drives

The drives were in btrfs format. I also did not format drives.

 

Is there any way to salvage the drives info and restore my server? Thank you for your time/help.

 

 

monolith-diagnostics-20240311-0801.zip

Post the output of

btrfs fi show

and 

fdisk -l /dev/nvme0n1

 

root@Monolith:~# btrfs fi show
Label: none  uuid: cc168293-0670-41ca-955b-014ba3907a73
        Total devices 1 FS bytes used 14.06GiB
        devid    1 size 30.00GiB used 19.99GiB path /dev/loop2


root@Monolith:~# fdisk -l /dev/nvme0n1
Disk /dev/nvme0n1: 1.82 TiB, 2000398934016 bytes, 3907029168 sectors
Disk model: Samsung SSD 970 EVO Plus 2TB            
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes

 

The device doesn't have a partition, I assume the other one is the same since no valid btrfs filesystem is being detected, so something deleted the partitions, if that's all that happened the pool may still be recoverable, type:

 

sfdisk /dev/nvme0n1

then

2048

and hit enter, post the output/screenshot of the results

Type N to keep the btrfs signature, then type

write

followed by enter.

 

Repeat the same for the other NVMe device (/dev/nvme1n1), a btrfs signature should also be found, if yes when done post the output of

btrfs fi show

 

root@Monolith:~# btrfs fi show
Label: none  uuid: cc168293-0670-41ca-955b-014ba3907a73
        Total devices 1 FS bytes used 14.06GiB
        devid    1 size 30.00GiB used 19.99GiB path /dev/loop2

Label: none  uuid: 183d90e6-6b8f-4e5b-a73e-e0e1766c837d
        Total devices 2 FS bytes used 208.92GiB
        devid    1 size 931.51GiB used 0.00B path /dev/nvme1n1p1
        devid    2 size 1.82TiB used 218.06GiB path /dev/nvme0n1p1

 

Now try restarting the array, and post new diags if the pool still doesn't mount.

So stop array and then start again. Correct?

Yep

 

Awesome! Looks like it's mounted. Anything else I need to do?

Nothing more, but make sure pool backups are up to date.

Thank you so much for your help on this! Life saver!