@olivierlambert said in Kernel trap (??) booting TrueNAS with 2 x Kingston NVMe SSDs:

Not all NVMe are created equals

Now all I need to do is determine if these errors are from the NVME's themselves or the 4 x NVMe sled that they're inserted in. LOL.

Again, thanks for the help.

OK, not really sure what's going on. I fired XCP back up to try what @teddyastie suggested.

Looking at the specs for the TrueNAS VM before booting it, it now had zero passthrough devices attached, which wasn't the state of the last time I tried (from memory). So re-added all but 1 passthrough, a GPU. Booted TrueNAS and this time it came up.

Bingo, I thought, the GPU is the issue, but based on my background, I had to try again with the GPU included to prove it was the culprit. Well, what do you know, after adding it back in, TrueNAS now starts perfectly. One theory destroyed.

All I can think, is that somehow the passthrough definitions in the VM config were corrupted and finding them all gone and re-adding them fixed this. Who knows.

But all appears to be good again (for now).

@yannsionneau Uploaded contents of /var/crash together with the output of "xen-bugtool --yestoall".

Cheers.