[SOLVED] Install Debug Mode hangs

N

nasenmann72

Renowned Member
Dec 9, 2008
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Germany, Saarland
Hello,

my ZFS boot mirror is broken, so I wanted to fix this reinstalling grub again, but I do not have a chance to boot in debug mode. When I choose this boot option then after reaching the console my system (Intel CPU) freezes. I can only push the reset button.

I've also used an other completly different system (AMD CPU) where I connected my boot disks. Same behaviour. I am stuck.

Are there any Kernel options I could try to boot into debug mode? Is it possible that this is a bug in the ISO? Can anyone reproduce freezing the machine when booting the ISO to debug mode?

Thanks!
 

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I have the same problem too - a broken ZFS grub, and no keyboard input over my supermicro IPMI.
The IPMI keyboard works fine when I boot with other distro's ISOs, and the keyboard works normally after I install Proxmox, so something seems to be weird with the proxmox v4.x ISO.

I did discover that using the v3.4 ISO worked with my IPMI keyboard, so at least there is something!
 
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the keyboard debug shell issue should be fixed in the next round of iso releases. you don't need debug mode to fix a broken grub though - "rescue mode" should be enough?
 
That's great to hear! :-)
The rescue mode on v4.4 couldn't find it - it hangs for a long while and then outputs:

error: failure reading sector 0x0 from `fd0'.
error: no such device: rpool.
ERROR: unable to find boot disk automatically.

When I run ls (hd0,gpt2), I get the same, with a:

No known filesystem detected - Paritition start at 1024KiB - Total size 3xxxxxxxKiB

I followed what was posted here:
https://forum.proxmox.com/threads/grub2-recovery-on-zfs-proxmox-ve-3-4.21306/#post-108466
and can see the ZFS just fine, but that didn't solve my grub problems.
 
alchemycs said:
That's great to hear! :)
The rescue mode on v4.4 couldn't find it - it hangs for a long while and then outputs:

error: failure reading sector 0x0 from `fd0'.
error: no such device: rpool.
ERROR: unable to find boot disk automatically.

When I run ls (hd0,gpt2), I get the same, with a:

No known filesystem detected - Paritition start at 1024KiB - Total size 3xxxxxxxKiB

I followed what was posted here:
https://forum.proxmox.com/threads/grub2-recovery-on-zfs-proxmox-ve-3-4.21306/#post-108466
and can see the ZFS just fine, but that didn't solve my grub problems.
Click to expand...

what does just "ls" and "set" output?
 
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