The start of my issues is above. I have upgraded and i'm doing a rebuild on the 10 drive. 

I may have done something to cause me to lose data, so I'm trying to find out should I even let the Rebuild move forward. 

I did a new config, and checked parity is valid. Then started my array. 

 

Drive 10 was unreadable (In the process I had errors that were calling for a xfs rebuild, but I was mixing up xfs with zfs) so I did a format. 
I had done a partial rebuild on it, and I figured that was what cause my issue. 
The drive now attaches, but the content is not emulated like it was before. 

Am I rebuilding a blank drive? 

Missing data isn't a huge issue, but I would like to lose as little as I can. 
 

 

 

ozunraid-diagnostics-20250507-1321.zip

38 minutes ago, southloven said:

so I did a format. 

You should never have done that, typically you just need to check filesystem, if you formatted the disk that data is lost, the only option is to use a file recovery app, like UFS explorer.

 

 

I'll agree, it said it had an an unmountable format  something, so I poorly assumed the data was gone.  I thought since I had a parity drive it could rebuild the drive. 

I'm guessing from you response that I am wrong in this instance

Should I just stop the rebuild and create a new parity then?  

Edited May 7, 20251 yr by southloven

4 minutes ago, southloven said:

I thought since I had a parity drive it could rebuild the drive. 

All write operations in the array update parity at the same time. Write, copy, move, delete are all write operations.

 

Format is also a write operation. It writes an empty filesystem to the disk. So, after format, parity agrees the disk has an empty filesystem.

 

You might as well go ahead and let it rebuild the empty filesystem unless you want to remove the disk and New Config/Rebuild Parity without anything assigned to that slot.

I guess its a lesson learned then. Thanks for the advice from both of you.