I have a Ubuntu 16.04 based VM, it sometimes boots into Emergency mode. The problem is it is not a frequent thing, once it goes into emergency mode and I issue reboot command it boots back up normally, but after few reboots it shows emergency mode again.
Just before it boots into emergency mode I can see on the console "Timed out waiting for device dev-disk-by\x2du\some\some".
After this the message dependency failed for /data. Dependency failed for local file system. Then after a few service starts. Enter root password to enter Maintenance mode or press Ctrl+D to continue.
This keeps happening on and off. I disabled squid service which was seen starting just before the dependency message but no use. The problem I am unable to find what dependency is failing. One reboot the issue > > is present the next its gone.
On checking logs via journalctl -xb. It shows local-fs.target failed.journatctl log
This is the screen just before I get the prompt for emergency mode. Disk fail before boot in emergency mode
Meu Ubuntu teve um problema semelhante ao remover uma unidade USB sem remover a entrada / etc / fstab. Uma vez eu comentei a linha de unidade USB e reiniciei tudo estava ok. Talvez sua unidade não esteja pronta quando a VM for inicializada. Veja se você pode anexá-lo após a inicialização.
