[SOLVED]I need help /dev/mapper/pve-root does not exist

[linuxnewb]

On Proxmox version 7.1-8. Host is Dell R640
Ran apt-get update.
Ran apt-get dist-upgrade
Rebooted host. Virtual machines where turned off.
On reboot host states it can not find the pve volume group.
I saw a post to modify the grub wait time to 10, but not sure how to modify this.
I have run blkid from the (initramfs) and I don't see dev/mapper only dev/sba1,2,3
Any thoughts on what to do would be helpful.

 

[gurubert]

When at the initramfs prompt issue the command

lvm pvscan -ay

. Does this work? Try to resume booting with exiting the prompt via Ctrl-D.

As for the boot delay: This has to be added to /etc/default/grub in the variable GRUB_CMDLINE_LINUX: "rootdelay=10". And then run

update-grub

 

[linuxnewb]

gurubert,
Thank you for the reply.

lvm pvscan -ay

This command does not work at the (initramfs) command prompt.
I will try Crtl-D. I would just reboot or type "exit" I will report back.
Why is it necessary to add the delay? What takes extra time for proxmox to find the root boot drive?

 

[gurubert]

Then try to add the rootdelay manually at the GRUB prompt.

BTW: This is not Promox' fault but the Linux kernel has to wait for the storage devices to initialise before it can scan for logical volumes.

 

[linuxnewb]

Thank you for the explanation of root delay. This makes logical sense.
Adding it manually at the GRUB prompt, would you just insert it before the linux or initrd?

 

[gurubert]

rootdelay=10 ist a command line argument to the linux kernel. Add it to the second line of your screenshot.

 

[linuxnewb]

gurubert, that worked!
Setting this to solved. Thank you.

 

[gurubert]

You still need to add rootdelay=10 to /etc/default/grub and run update-grub to make it reboot persisten.