umount -a, mount again?

[mito]

Hello all,

I have a Proxmox server that was running perfect, until now. I have mounted shares via GUI, but when the seperate file server reboot, I have to use: umount -l <mounted share>.

But this time I used: umount -a, and it also unmounted /proc and /dev. Now GUI doesnt work, and simple function like df, dd, htop and so on doesn't work.

If I use: mount -a, function and GUI still doesn't work. I have tried:

mount -t proc /proc proc
But:
mount: /proc: wrong fs type, bad option, bad superblock on /proc, missing codepage or helper program, or other error.

Anyone who have an idea? I can reboot, and it will be solved. But would be nice to know how to do it correctly

 

[bbgeek17]

the correct way to solve it, after catastrophically pulling the rug from under a multitude of services, is to reboot the server. You can also try to restart things one by one in correct order, if you like the challenge.

---

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

 

[mito]

It is rebooted now, but I would like to know more. Could you point me in the right direction?

Often when I use umount -a, only mountpoints that are not in use are removed. After 8 years on Linux, this is my first