Very slow parity copy on parity swap

[JorgeB]

Original parity swap was with disk6:

Oct 10 00:04:40 Zeus emhttpd: copy: disk6 to disk0 running

How come now it's disk3? What happened to disk6?

[xxbigfootxx]

54 minutes ago, itimpi said:

Are you also trying to rebuild disk4?

No disk4 was removed from the server. 

[xxbigfootxx]

51 minutes ago, JorgeB said:

How come now it's disk3? What happened to disk6?

I tried all slots just to test the error. Same on all disk slots

[JorgeB]

5 minutes ago, xxbigfootxx said:

I tried all slots just to test the error. Same on all disk slots

That's not how parity swap works, it only works when you have a disable data disk.

 

And that still doesn't answer what happened to disk6, if parity was valid with it it's not without it.

[xxbigfootxx]

7 minutes ago, JorgeB said:

And that still doesn't answer what happened to disk6, if parity was valid with it it's not without it.

After a few reboots the disk was showing as unassigned. Disk was showing errors before

[JorgeB]

22 minutes ago, xxbigfootxx said:

After a few reboots the disk was showing as unassigned. Disk was showing errors before

Then is should still be disabled, or did you do a new config?

[xxbigfootxx]

28 minutes ago, JorgeB said:

or did you do a new config?

New config

[JorgeB]

5 minutes ago, xxbigfootxx said:

New config

And parity was re-synced?

[xxbigfootxx]

1 minute ago, JorgeB said:

And parity was re-synced?

Yes it was 

[JorgeB]

Just now, xxbigfootxx said:

Yes it was 

Without a disable disk there's no real need to use the parity swap procedure, but it can still be used if you disable the data disk first, like mentioned here:

https://wiki.unraid.net/The_parity_swap_procedure

[xxbigfootxx]

11 minutes ago, JorgeB said:

Without a disable disk there's no real need to use the parity swap procedure, but it can still be used if you disable the data disk first, like mentioned here:

https://wiki.unraid.net/The_parity_swap_procedure

So how would i go about inserting a disk that is larger than the current parity? Add the old drive back in, wait for the data rebuild then action the steps in the link to stop array, unassign the disk, restart array, stop again, assign new 8tb disk as parity and the 6tb as same data drive that was rebuilt? 

 

Would that be the best way to do it? Or is there an easier/faster method?

[JorgeB]

1 minute ago, xxbigfootxx said:

So how would i go about inserting a disk that is larger than the current parity?

First upgrade parity, then the data disk.

[xxbigfootxx]

Would this be the correct process for that?

 

1.  Remove the 6tb parity.

2a.  Add the 8tb as a parity drive.  Allow the array to rebuild.

2b. Start the array Allow the array to rebuild.

3.  Pre clear the 6th (old parity)

4a. Stop the array

4b.  Add the 6tb (old parity) to the array.

4c. Start the array

[JorgeB]

Are you going to replace an existing disk with the 6TB or add it as a new disk? If it's to replace an existing disk no need to preclear, even as a new disk Unraid can now clear it in the background, but you can use preclear.

[xxbigfootxx]

12 minutes ago, JorgeB said:

Are you going to replace an existing disk with the 6TB or add it as a new disk?

Just add it back in as a new disk. I've started the parity sync/ data rebuild, so will hopefully have good news tomorrow when it's completed. Thanks for all your help @JorgeB!

[xxbigfootxx]

All finished and parity is valid. Everything working great. Thanks again!