UCS5 server not fully booting anymore

UCS - Univention Corporate Server
#1

Having kind off a bad day (multiple). My UCS 5.0.2 vm won’t boot properly anymore and even my oldest backup is having the same problem.

At boot, the boot partition (vda1) and vg_ucs-home are not getting mounted (vg_ucs-root does) and i’m being dropped into an emergency mode shell.

I can mount the vda1 boot partition manually. lvscan shows that the ‘home’ lv is inactive, but i can activate it with lvchange -a y vg_ucs/home and mount it. I can access the data from both this way.

Been searching and trying for a couple of days, but can’t get my system to boot again.

I’m out of my league here, anyone knowledgeable that can give some assistance?

Start the server after 10 days results in "you are in emergency mode......"
#2

Hi,

post your /etc/fstab. And, if possible a screenshot from the boot messages including the error.

/KNEBB

#3

Hi KNEBB,
Have to post screenshots of both (can’t access console for cut & paste)…

fstab:
fstab_screenshot

boot errors:
boot_msg_screenshot

Thanks for taking a look!

#4

OK, when you are in rescue console. What is the result of the blkid command?

And post fdisk -l

#5

The requested output:
blkid_fdisk_lvscan_output

#6

Hi,

unfortunately I do not see any reason for this behaviour.

I suggest to do the following:
fsck -f for ALL partitions/ lv’s
Just for testing purpose comment the line with /boot and create a new one using /dev/vda1 instead of UUID.
Do update-grub2 and possibly grub-install /dev/vda

Good luck!

#7

All disk checked (fsck) and fine. But the update-grub2 command gives me an error (see screenshot). Probably because /dev/vda1 is not mounted at /boot/.

Manually mounting /dev/vda1 on /boot/ gives no errors but also does not work… weird (?!).

Manually mounting /dev/vda1 on a temporary dir (/mnt/tmp_boot) works just fine and i can access the data.

update-grub2_error

#8

Did you recently update the linux…

check grub2 & grub have not got confused… and check the EFI/secureboot settings.

like you did not setup grub , then try to use grub2?

in your boot i see a “grub” folder but not “grub2”

#9

Hi talleyrand,
Thanks for your reply!

Nope, have not done anything manually with grub.
Server just did not come up anymore after a reboot. How do i check if grub2 & grub did not get confused?

#10

you are using grub2 commands
generally the univention has a “grub” folder linux uses “grub” for traditional & grub2 for … grub2
you can use either, but different linux handles the folders differently
try to find out which one univention uses. it could be it still uses grub , but you are using grub2 commands

Mastodon