I removed one of my drives just to clean some dust while it was still running.  Reinserted the drive but now i get this error because it looks like the drive name changed.  There is nothing wrong with the drive.  Anyone know how to reassign it correctly without having to rebuilt it?

 

16 minutes ago, pm240sx said:

while it was still running

 What is "it" referring to?  Also attach the diagnostics in a NEW posting/message.

Edited March 12, 20233 yr by Frank1940

The array ("it") was still up and running.  I pulled the drive and reinserted the drive.  I reboot the server and now the drive is showing up disabled.

maverickunraid-diagnostics-20230312-1102.zip

I just checked some data that was on the drive and it seems to work.  The drive is saying "Device is disabled, contents emulated."  Anyway to reenable this drive?

When you pulled the drive while the array was running, the drive immediately becomes emulated by using parity information.  This emulation would allow a 'write' of data to this emulated drive. (But not to the physical drive!) Thus, the data on the physical drive will not match with what should be on the drive.  You will have to rebuild the drive.    (You may say, "Well, there was nothing written" but Unraid can't be certain of that-- and neither can you!)

Gotcha thanks.  Lesson learned.

6 minutes ago, pm240sx said:

Gotcha thanks.  Lesson learned.

For any other new users of Unraid, the lesson is that any time you are going to perform physical maintenance on an Unraid server, you should always shut it down completely.

 

Second lesson is that if you are inside of the case and have disturbed the cabling in any manner, double and triple check that all of the SATA cables (power and data) are firmly seated on the motherboard and the drives.  A loose SATA cable will eventually cause a drive to become 'Disabled'. 

one last question would this be the best way to restore my drive?

 

Yes, if you are going to use the same disk.  The slot must be unassigned before you (re)assign the old disk.  That way Unraid knows that you want to have the contents of the emulated disk restored onto the old disk.  (Actually, what has happened is that when you unassign the old disk, its serial number is 'forgotten' and when you reassign it, Unraid thinks it is a 'new' disk and that prompts a rebuild. Unassigning the disk avoids having to shut down the server, physically remove the disk, restart the server, shut it down, reinstall the disk, restart the server, and then assign the disk to the proper slot.) 

 

If you were going to use a new disk. (Not the worst idea, by the way.  Keeping the old disk as a backup since it may have everything  still on it.  No way of knowing for certain.  A sort of belt and suspenders thing.)  In that case, you can just assign the new disk to the proper slot in the array and Unraid will start the rebuild.)

 

Whenever I do any disk exchanges, I always shut the server completely down.  I, personally, don't like inserting and removing components while there is full power on the computer.  (I am just old-fashioned that way...)