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Need help after being dumb reformatting and removing 1 of 3 cache drives

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The other day, I realized that instead of my 3x1tb ssd cache pool, I wanted a 2x1tb pool (for downloads) and then a single 1tb for cache. I, however, did not properly swap the ssds. I stopped the array. unassigned one ssd. now this is where I made the mistake. I also added it to the new pool before then starting the server. Unraid then asked me if I wanted to format the drive and unfortunately, I said yes.  Now the webserver is down, and SMB is down.  Also, nginx is nowhere to be found because I tried restarting just that. please advise because I am at a complete loss

tower-diagnostics-20250212-1710.zip

Solved by JorgeB

  • Community Expert

Rename both pools cfg files on /config/pools to bak, then reboot, and you should have the GUI back, then post new diags, also the output from:

btrfs fi show

 

  • Author

bak.cfg? or bak with no extension. also it says they can't be named the same

  • Community Expert

Just change the extension of each from .cfg to .bak

 

Also, disable Docker and VM Manager in Settings until you get this resolved.

  • Author
7 hours ago, JorgeB said:

Rename both pools cfg files on /config/pools to bak, then reboot, and you should have the GUI back, then post new diags, also the output from:

btrfs fi show

 

warning, device 2 is missing
Label: none  uuid: 70f55288-95ae-46a3-987a-26acb56851ea
        Total devices 3 FS bytes used 31.80GiB
        devid    1 size 931.51GiB used 24.00GiB path /dev/sdf1
        devid    3 size 931.51GiB used 24.03GiB path /dev/nvme0n1p1
        *** Some devices missing

Label: none  uuid: 27b0f1f0-256b-476b-8bdd-50f7788d56cb
        Total devices 1 FS bytes used 144.00KiB
        devid    1 size 931.51GiB used 2.02GiB path /dev/sdi1

  • Community Expert

See if the pool mounts with the missing device, it should if it was a mirror:

 

Add a new pool with 2 slots, you can use the same name as before, add those two devices (sdf and nvme0n1), leave the filesystem set to auto, start the array, post new diags.

  • Author

Label: none  uuid: 70f55288-95ae-46a3-987a-26acb56851ea
        Total devices 3 FS bytes used 31.80GiB
        devid    1 size 931.51GiB used 24.00GiB path /dev/sdf1
        devid    2 size 0 used 0 path  MISSING
        devid    3 size 931.51GiB used 24.03GiB path /dev/nvme0n1p1

Label: none  uuid: 597788a0-3a97-4dea-a48f-ff7f79311fe3
        Total devices 1 FS bytes used 11.93GiB
        devid    1 size 80.00GiB used 17.02GiB path /dev/loop2

Label: none  uuid: 5fa2bb50-323c-4289-b196-d1cb7ec21a7d
        Total devices 1 FS bytes used 416.00KiB
        devid    1 size 1.00GiB used 126.38MiB path /dev/loop3

Label: none  uuid: 27b0f1f0-256b-476b-8bdd-50f7788d56cb
        Total devices 1 FS bytes used 144.00KiB
        devid    1 size 931.51GiB used 2.02GiB path /dev/sdi1

 

How do I get the diags without removing the flash drive. or do I need to do that again

  • Community Expert

With the array running type:

btrfs dev del missing /mnt/cache

 

When that's done, post new diags.

  • Community Expert

Now stop the array and re-import the pool again:

 

on main click on the first device for that pool and then "remove pool"
back on main, create a new pool with the same name and 2 slots
assign both pool devices, leave the filesystem set to auto
start the array to import the pool

 

That should do it, you can also then import the other device in its pool.

  • Author

Unmountable disks present:
Cache • WD_Blue_SN580_1TB_24515V806550 (nvme0n1)
Ssds • PNY_CS900_1TB_SSD_PNY24512412180102071 (sdf)
Ssds 2 • PNY_CS900_1TB_SSD_PNY24512412180102076 (sdi)

 

Do I format them?

  • Community Expert

No, the nvme device was part of a pool with sdf, looks like you separated them? That won't work.

 

Do you want the two SSDs to be in a pool and the nvme alone?

 

 

 

 

  • Author
25 minutes ago, JorgeB said:

Do you want the two SSDs to be in a pool and the nvme alone?

this is correct. nvme will stay cache. ssds will be a pool for sabnzb linux iso downloads

25 minutes ago, JorgeB said:

 

 

 

 

 

  • Community Expert

OK, in that case we have to do a few more steps, remove bot pools, create a new one again with the two current members (nvme and sdf), the other pool with just the sdi device was empty right? Or was there also some data there, there can't be much:

2 hours ago, Teero said:

used 2.02GiB path /dev/sdi1

 

  • Author

absolutely zero data in the ssds pool. however, the two I want to put there were previously part of the cache pool. I removed both pools. so now all 3 ssds are unassigned. I want both pny in a downloads pool (called whatever for sabnzb) and then the one nvme for cache pool

Edited by Teero

  • Community Expert

OK, so create the pool again with (nvme and sdf), and post new diags.

  • Community Expert

This pool also appears to be empty now, did you move the data?

  • Author

before doing all this I assigned cache to array and invoked mover. That's before I made the mess up. I thought I was doing it correctly lol. I guess not

  • Community Expert
  • Solution

Check to see if you have the data in the array, before removing the missing device, the pool had about 32GB of data, now it's empty, if you moved everything to the array, you can just create the new pools with the devices you want and format.

  • Author

that worked, had to do a clean reboot after since the web UI was glitched and nothing was loading on the dashboard or shares. seems to be fine now.

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