[SOLVED] After Update -> Grub rescue console

Yakuraku

Active Member
Sep 24, 2016
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Hey folks,

I installed Proxmox today (downloaded yesterday).
It was success full installed (ZFS) and created some vms. Everything was fine and reboot was all ok.

Then I performed an update (without any errors). After this reboot, the system does no longer boot. To be precise, the server boots into grub rescue. The only additional information provided is:
"error: [2] incorrect dnode type: 16!=21"

Anybody has an idea, how this problem is created?
 
I have tried to reinstall the Proxmox to fix the problem, and after another update/upgrade, I got the same problem again ("error: [2] incorrect dnode type: 0!=21"). My ZFS root pool is a 3-mirror setup. Souldn't it be save against a corrupted dataset? Could that be a known bug I haven't found?

@sigxcpu & @fireon: Thanks for your replies. I'll try to chroot and fit it with a proxmox 3.4 / 4.0 cd (I can't use 4.2 because of this https://forum.proxmox.com/threads/debug-mode-no-inputs-possible.26117/ )
 
Just started with the proxmox 3.4 and checkt the zpool, which was ok (no corruption)
I chrooted to the rpool but now I can not perform grub-install /dev/sda (grub-install error cannot find a device for /boot/grub (is /dev mounted?) Did i miss to give the /dev to chroot?
 

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