Appdata disappeared, unable to format new cache drive unmountable no pool uuid

[mbc0]

Woke this morning to find all my appadata & dockers gone.

Rebooted still the same.

I have backups so I decided to build a new cache pool with 2 new nvme drives, I can mount 1 and format ok but when I try to add a 2nd the pool is unmountable and will not format.

Any ideas how I can resolve this please? Diags attached

unraid1-diagnostics-20230207-1053.zip

[mbc0]

Also, how do I recover all my docker templates from the flash drive please? I have the docker img still

Edited February 7, 2023 by mbc0

[JorgeB]

Feb  7 10:51:59 UNRAID1  emhttpd: shcmd (729): /sbin/wipefs -a /dev/nvme1n1
Feb  7 10:51:59 UNRAID1 root: wipefs: error: /dev/nvme1n1: probing initialization failed: Device or resource busy

 

Device is reporting busy, reboot and try again.

[mbc0]

Hi, I am running on a single cache currently as I needed to get up and running, I rebooted 3 times and tried to mount/format with the same result before posting here so maybe it is something else? 

 

If I try again later do you think I could risk causing a problem with the data on the single cache drive?

 

Many thanks!

 

[JorgeB]

Something is using that device not allowing it to be partitioned, but if a reboot doesn't help don't know what it could be.

[mbc0]

OK, Resolved, 

 

Not sure why I lost the docker containers and appdata but it is what it is, if it happens again I will download diags and investigate.

 

Unraid got hung up on one of the NVME drives that used to be a pool called cachetwo,

I had removed the pool cachetwo made a new config and used that drive as cache instead as a single cache drive just to get up and running.

I then created another pool called cachetwo using one of the drives that used to be in the cache pool.

Even though I was writing to the path /mnt/cache Unraid was writing to the drive in the cachetwo pool!

 

I removed cache pool & cachetwo pool, re-added cache using 2 drives and cachetwo using 1 drive and now all running as normal.

[mbc0]

Ever seen this before @JorgeB ?

[JorgeB]

Yeah, didn't notice before, device was already part of a pool:

 

                 Data      Metadata  System                              
Id Path           RAID1     RAID1     RAID1    Unallocated Total     Slack
-- -------------- --------- --------- -------- ----------- --------- -----
 1 /dev/nvme1n1p1 100.00GiB   1.00GiB 32.00MiB   852.84GiB 953.87GiB     -
 2 /dev/nvme0n1p1 100.00GiB   1.00GiB 32.00MiB   830.48GiB 931.51GiB     -

 

No wonder it was busy