[SOLVED] Array settings after change of USB drive

[distel]

Hi everyone,

I had to create an new usb drive earlier today as my old one stopped working.
It went fine and I was able to copy my backup to the drive and unraid is booting again

 

Now array drives are not specificed anymore.

 

I have 2 drives (WD Red 4 tb) which acted as parity / data drive.

 

As you can see I can mount both of them.

 

When I select one as Partiy and the other as data (tried both possible solutions) I get following hint:

All existing data on this device will be OVERWRITTEN when array is Started

 

could you help me out how I find out parity / data drive?

 

br,

distel

[JorgeB]

With only one data drive parity works as a mirror, you can assign either one as disk1, the other as parity, and before array start check "parity is already valid".

[distel]

I was able to determin the parity drive with this guide in the end
https://wiki.unraid.net/UnRAID_6/Changing_The_Flash_Device#What_to_do_if_you_have_no_backup_and_do_not_know_your_disk_assignments
Some minor issues but afer all all good now.

Thanks

[trurl]

8 hours ago, distel said:

I was able to copy my backup to the drive and unraid is booting again

 

Now array drives are not specificed anymore.

Your disk assignments should have been in config/super.dat in your backup. How are you making flash backup?

[distel]

Hi @trurl

I used CA Backup / Restore Appdata to back up to an mounted smb share that is located on my old nas. which seems to miss super.dat

 

I just enabled usb backup via unraid.net to avoid this issue in the future.

 

br,

distel

[trurl]

13 minutes ago, distel said:

CA Backup

As a safety measure to prevent you from accidentally using an old backup with the incorrect disk assignments, CA Backup renames super.dat and you have to rename it back in order to use it.

 

The problem that can cause occurs when you reuse a parity disk for data. Old backup says disk is still parity and begins to overwrite data.

[trurl]

44 minutes ago, distel said:

Hi @trurl

In order for that @

to turn into an actual notification

you have to begin typing the @

and immediately follow it with some letters from the user name

then you have to actually make a selection from the list that appears

 

Like this

@distel