Possible bug/need advice - two disabled data disks (with two working parity)

[WebAddict]

I have two DISABLED data disks (with two working parity disks) - I FOUND POSSIBLE BUG & need advice!

 

First: 14tb disk3 had hardware failure. Ordered Seagate overnight warranty replacement.

 

After a system reboot, this disk was no longer "installed", but being emulated. (no problem, thx parity!)

 

Array is kinda full, so also ordered, received and started pre-clearing three new 16tb disks to add to array.

 

Once I finally received the warranty replacement 14tb disk, I hot-unplugged the failed disk, and plugged in it's replacement on same sata. Now showed up on unassigned disks, ran seagate cmd tools for SMART tests and extended tests - all passed.

 

Now - pay attention for BUG - This is where I started a preclear for the replacement 14tb (now 4 preclears running simultaneously, with 3 for new 16tbs). It started the Pre-Read, and I was monitoring that for a few hours when I noticed the SERIAL NUMBER of the new pre-clearing 14tb disk was actually another 14tb operational disk4, not the expected serial printed on the HD. This serial number is showing up for both devices.

 

So out of precaution, I stopped that preclear/pre-read of the 14tb, and paused the other 3 preclears so I can stop the array and reboot. Once the system came back up, all disks now showed the right serial numbers - but now the WORKING 14TB WAS MARKED DISABLED! I assume that's because in the preclear process, it labeled the wrong serial number (or other identifier) assignment, and now disk4 is out of sync.

 

I have run some tests on that known-good disk4 14tb drive, and it passes all tests. I have been able to start a new preclear on the replacement 14tb disk, and that will be done in a day or two.

 

Question is: For disk4 (disabled 14tb working disk), can I "Rebuild a drive onto itself" safely? Even though there is an "Not installed" disk3? I have two good parity disks perfectly emulating the data.

 

I understand the rebuild process - but am checking here if you think I should proceed starting that disk4 rebuild while disk3 is not installed. OR should I WAIT to have two completed preclears, and do both disk3 and disk4 at the same time with full precleared disks?

 

I have just posted my hardware profile to limetech & submitted a feedback form bug report from my dashboard. I can provide logs or anything else that might be useful.

 

Edited September 6, 2022 by WebAddict

[itimpi]

You can rebuild each disk in turn if that is more convenient.   After the first rebuild succeeds then the array will be back in a protected state.

[trurl]

5 hours ago, WebAddict said:

hot-unplugged the failed disk

No good reason to hotplug array or pool disks since Unraid won't do anything with the disks until you assign them, and you have to stop the array to make assignments.