[SOLVED] Help recovering my proxmox 5.4

[M3M1X]

Dear All,

I have done a very stupid mistake which resulted in my proxmox shutting down before any VM loads. I'll explain how...

I have 2 VMs set to auto start. I created a systemd service to check when both VMs are stopped to shutdown the proxmox server. The problem is that I didn't add a delay to the service. So, when proxmox first starts, it runs the service first before the VMs and the service immediately shuts down the server. So, VMs never start...

I tried to enter "recovery mode", but proxmos doesn't have that option. I tried booting to proxmox ve installation USB to recover that way, but I cannot mount the hard disk because it is part of LVM (I wanted to mount my proxmox installation in order to amend the service and add a delay).

Any solutions would be much appreciated.
Thanks.

 

[fiona]

Hi,

Dear All,

I have done a very stupid mistake which resulted in my proxmox shutting down before any VM loads. I'll explain how...

I have 2 VMs set to auto start. I created a systemd service to check when both VMs are stopped to shutdown the proxmox server. The problem is that I didn't add a delay to the service. So, when proxmox first starts, it runs the service first before the VMs and the service immediately shuts down the server. So, VMs never start...

I tried to enter "recovery mode", but proxmos doesn't have that option. I tried booting to proxmox ve installation USB to recover that way, but I cannot mount the hard disk because it is part of LVM (I wanted to mount my proxmox installation in order to amend the service and add a delay).

you should be able to mount a file-system living on top of an LV too. Assuming you use the default local-lvm configuration, the command should be

sudo mount /dev/pve/root /some/mount/point

If that doesn't work please share the output of lvs.

Any solutions would be much appreciated.
Thanks.

P.S. Proxmox VE 5.x is end-of-life since more than a year, so please consider upgrading.

 

[M3M1X]

Hi,

you should be able to mount a file-system living on top of an LV too. Assuming you use the default local-lvm configuration, the command should be

sudo mount /dev/pve/root /some/mount/point

If that doesn't work please share the output of lvs.


P.S. Proxmox VE 5.x is end-of-life since more than a year, so please consider upgrading.

Thank you Fabian for your reply. Very much appreciated.

The problem is that I cannot get to command prompt on the server to perform the steps above.

I have the same USB I used to install this instance of proxmox, and if I choose to install with debug, I can get into the command prompt of the USB. In other words, I don't have access to "/dev/pve/root" of my proxmox because it is on another HDD.
When I tried to mount that partition (proxmox installed on), I get the error saying I can't mount an lvm partition.

 

[fiona]

Yes, I meant from the live CD/USB.
Does /dev/pve/root show up after you run vgscan and vgchange -ay?

 

[M3M1X]

Yes, I meant from the live CD/USB.
Does /dev/pve/root show up after you run vgscan and vgchange -ay?

You are a life saviour!

I did vgscan first, my volumes showed up. Then I did vgchange -a y, and i was able to reach /dev/pve/root.

Now I have fixed my service and all VMs booted normally.

I will upgrade proxmox ASAP as well, thank you for the reminder.

Once again, thank you so much!