[SOLVED] different disk order in VM depending on the boot method

[alpresci]

Hi all!

I have debian VM with two drives /dev/sda which is where the system is installed and /dev/sdb1 used by nextcloud as data storage (see picture)


The problem is that when I boot the VM by pressing "start" in proxmox gui and I do not do anything else, nextcloud does not work.. so I checked and by running lsblk again:



basically the whole debian server gets mounted in /mnt/nextcloud!! and /dev/sda1 is ignored... breaking nextcloud and a few other things.

IF I press "start" in proxmox gui and I immediately open a console to the VM then at grub I can manually press "enter" even on the default choice and everything is normal as in first picture.

Can you please help me understand what is going on?
thank you very much for your help!

proxmox 7.3
VM: debian bullseye
/dev/sda --> SCSI0
/dev/sdb --> SCSI1
SCSI controller --> virtioSCSI single
BIOS --> seaBIOS
Boot order --> SCSI0, net0 (SCSI1 is not even selected)

 

[alpresci]

a little update:

after several tests, it actually seems random. It does not really matter the way I start the VM: some times it mounts root on /sda1 some other times on sdb1.

Could you please help me understanding this? thanks!!

 

[bbgeek17]

What is the context of your /etc/fstab?

---

Blockbridge : Ultra low latency all-NVME shared storage for Proxmox - https://www.blockbridge.com/proxmox

 

[alpresci]

apologies for the screenshot but I have not yet configured ssh access to the VM

thank you!!

 

[bbgeek17]

change the sdb1 to uuid as the instructions above explain, see if that helps

---

Blockbridge : Ultra low latency all-NVME shared storage for Proxmox - https://www.blockbridge.com/proxmox

 

[alpresci]

done!
I am testing it with a few reboots now and it seems ok. No strange mount disk swaps so far!!

I will keep monitoring the situation but, in the mean time,
thank you!!!!