node fails to start after updating kernel to 6.8.12-4

[n0x0n]

Homelab setting, pve 8.2.7, root on zfs, node has 3 disks,
I updated one of my nodes this evening and it didn't come up again. Quick look showed that it just stopped after it found sdb. Ctrl-C dropped me to an initrd shell. I just rebooted into 6.8.12-3 and it booted fine.

Taken from the successful 6.8.12-3 boot, this is where the newer kernel just stopped booting

[    3.245303] sd 7:0:0:0: Attached scsi generic sg1 type 0
[    3.248864] sd 7:0:0:0: [sdb] Preferred minimum I/O size 4096 bytes
[    3.249219] sd 7:0:0:0: [sdb] Optimal transfer size 33553920 bytes not a multiple of preferred minimum block size (4096 bytes)
[    3.253878]  sdb: sdb1
[    3.254494] sd 7:0:0:0: [sdb] Attached SCSI disk

It's already late in my timezone and I'm quite sleepy so I won't investigate until tomorrow.
Happy to look for info if someone tells me where to dig.

 

[n0x0n]

Updated a second node, just some things I realized, maybe that's interesting for someone:

• update-initramfs for 6.8.12-4 took a really long time. Same happened yesterday on the other node: It took like 3-5 minutes!
• Building a new initrd usually takes ~30 seconds or so. Load on the machine was normal during that time, too