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after resetting my unraid server by mistake addded cache to disk array

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after having issues i had to re set up my unraid server. I went click happy and added my cache drive (the one it use to be) to a disk spot on the array, i tried to stop array and change disk from array to cache but  couldn't start the array. Should i just let it re build parity then change the disk to array then? Wish i wasn't gun hoe click happy but after a major issue i was just hoping to start it back up. I''l add diagnostic after parity sync is done but. can't i change it before hand....? i tried like i said and  t wouldn't let me stat array to parity sync

 

thanks for the help anything i can do or provide just let me know. i know i usually ad the diagnostic but i don't wanna stop it and have to stat at zero again..

Edited by jessi23

  • Community Expert

If it was added as a new device to an existing parity protected array it will be cleared (wiped) first, you can do a new config without it then re-assign as cache but any data there will be gone.

  • Community Expert
3 hours ago, jessi23 said:

re set up my unraid server.

Do you mean you did a new install on the flash drive? 

 

Attach Diagnostics to your NEXT post in this thread 

  • Author

i did, will post diagnostic in a min

  • Author
3 hours ago, trurl said:

Do you mean you did a new install on the flash drive? 

 

Attach Diagnostics to your NEXT post in this thread 

 

Seen to have been able to move the cache drive back to the pool and stat array, know its saying disk1 need to be formated and i dont want to loss the data on disk. should i wait for partiy sync or go ahead and format..?

thanks in advance

tower-diagnostics-20230227-0632.zip

  • Community Expert
32 minutes ago, jessi23 said:

dont want to loss the data on disk. should i wait for partiy sync or go ahead and format..?

NEVER format a disk that should have data on it you want to keep.

  • Community Expert

Comparing the 2 diagnostics you posted, it looks like you swapped parity2 and disk1 when you were reassigning disks. So you are now rebuilding parity2 over the former disk1 data, and the former parity2 is now waiting to be formatted as an empty disk1.

 

Do you have backups of anything important and irreplaceable?

  • Community Expert

Also looks like disk1 was unmountable in those first diagnostics, so my guess is you already made that same mistake earlier, assigning a data disk to a parity slot.

 

Maybe you knew you had already done it wrong, and tried to fix it when you reassigned the 2nd time.

 

Too late to save disk1 data.

  • Author
4 hours ago, trurl said:

Also looks like disk1 was unmountable in those first diagnostics, so my guess is you already made that same mistake earlier, assigning a data disk to a parity slot.

 

Maybe you knew you had already done it wrong, and tried to fix it when you reassigned the 2nd time.

 

Too late to save disk1 data.

so there is no way to save disk 1 without formatting it?

  • Author

just double checking and making sure i explain all details first to make sure i understand. when i go to look at my files, ISO,music, etc it only shows that it is being stored on disk 2-8, so i am just wondering if there is a way to double check if there even is anything on that disk before i hit format? not sure if i cant see disk one when i look at where my files are stored because it is unmounted currently or if its because my stuff isn't on there in general. is there a way to check? also even now, and my disk array says i still have 47% available space, but if it wasn't mounted right how would it know how much space i have available , and would it be the same as it was before? because it is the same as far as it looks. please let me know your thoughts and  thanks for your patience reading through my thought process!

  • Community Expert

If you format the disk, it will be empty and you can use it again for storing files.

 

No way to know what might have been on it before.

  • Author

can i mount it change the filesystem without formatting or is that my only option?

  • Community Expert

You can't "mount" a disk that doesn't have a mountable filesystem. Whatever you set the filesystem to, the drive won't be mountable until you format it. Then it will have an empty filesystem of whatever type you chose.

 

When you assigned that disk to a parity slot, whatever was on the disk before was overwritten by parity. Parity is just a bunch of bits, it has no filesystem and has none of your data.

https://wiki.unraid.net/Manual/Overview#Parity-Protected_Array

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