Ubuntu Server 18.04.1: mount raid 1 as /boot partition
Solution 1
I switched to the Ubuntu 18.04.1 LTS alternate server image. Here it works!
Solution 2
Use an usb stick for /boot ext4 😁 bypassing your problem Any of the drive fails you will still boot from the usb stick and will work the degraded drive.
Solution 3
Seems to be a bug in the new installer: https://bugs.launchpad.net/subiquity/+bug/1785332
Downloading the alternative installer seems to fix it:
https://www.ubuntu.com/download/alternative-downloads#alternate-ubuntu-server-installer
Make sure the *.iso file name does not contain "live" in the file name if you want to use the alternative server image.
Related videos on Youtube
RGe
Updated on September 18, 2022Comments
-
RGe over 1 year
I have 6 disks (2x 1tb and 4x 4tb) and want the following setup:
- 2x 1tb disks in raid 1 (mounting point /)
- 4x 4tb disks in raid 5 (mounting point /home)
I got the following messages:
If you put all disks into RAIDs or LVM VGs, there will be nowhere to put the boot partition.
and
You must mount a partition of a local disk at /boot to continue.
help.ubuntu.com says:
Warning: the /boot filesystem cannot use any softRAID level other than 1 with the stock Ubuntu bootloader. If you want to use some other RAID level for most things, you'll need to create separate partitions and make a RAID1 device for /boot.
I also tried to split the raid 1 in two raid 1, one to mount as / and one to mount as /boot, but i am not able to select /boot as mounting point for the second array (greyed out).
What did i forgot?
-
user535733 over 5 yearsThis is a smart solution. I always have a non-raid drive boot drive for simplicity.