After the update I discovered that the pool has degraded because one of four disk is marked FAULTED under Storage>Pool Devices It has no ZFS errors and SMART scan returns no errors. When trying to set disk Online or add the disk to the pool I get: [image] More info reveals this: Traceback (mo…

“I/O Error” is rather ambiguous, and could be for any number of reasons. Under Storage → Disks, does the device show as present as a sdX device? @Robin_Portwood You may want to spin up your own troubleshooting thread, so that readers don’t get confused between the two system configurations. Even t…

Thx for your input :+1: The disc is in the list, but marked N/A. Also the only disc that shows the Wipe button. [image]

Let’s start at the bottom of the model and work up - first, checking physical drive health. Please get the raw SMART output for the “N/A” drive with a shell command: smartctl -A /dev/sdd Post the output inside the “Code” formatting (Ctrl+E, the </> button on the text formatting bar, or encased in…

[image] Chris Peredun: Even though you might be receiving the same symptom, you may have a different root cause. @HoneyBadger I don’t want to overload you BUT… there have been quite a few threads about loosing a pool after an update/sidegrade to 24.10 or 25.04. It would be somewhat reassuring…

I’m actually tracking along with the thread of “Updated from Core to Scale now missing pool” as @DjP-iX jumped in there to try to track down the process - as the first step to resolution is reproducing the problem. I know there were partition sizing and offset changes done in middleware as a result…

root@truenas[~]# smartctl -A /dev/sdd smartctl 7.4 2023-08-01 r5530 [x86_64-linux-6.12.15-production+truenas] (local build) Copyright (C) 2002-23, Bruce Allen, Christian Franke, www.smartmontools.org Read SMART Data failed: scsi error device not ready === START OF READ SMART DATA SECTION === root@…

[image] Henrik_Bo_Andersen: Read SMART Data failed: scsi error device not ready Have you powered down completely and checked the connections to the drive?

Yes. Powered down, removed power cable, reseated the SATA connectors on all drives. No luck.

Can you please verify that the drive in question is still labled sdd? It can change during boot.

Nope! It has changed to sde: [image]

Pool degraded after update from 24.10.2.1 to 25.04.0

TrueNAS General

winnielinnie May 26, 2025, 12:48am 19

Here is another one, @etorix.

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Pool degraded after update from 24.10.2.1 to 25.04.0

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