On Mon, Jan 22, 2024 at 03:32:30PM +0100, sko...@uns.ac.rs wrote: > I am getting the following message at any boot: > > "The volume "Filesystem root" has only 221.1 MB disk space remaining." > > df -h says: > > Filesystem Size Used Avail Use% Mounted on > udev 1.5G 0 1.5G 0% /dev > tmpfs 297M 9.0M 288M 4% /run > /dev/mapper/localhost-root 5.2G 4.7G 211M 96% / > /dev/mapper/localhost-usr 14G 12G 948M 93% /usr > tmpfs 1.5G 0 1.5G 0% /dev/shm > tmpfs 5.0M 4.0K 5.0M 1% /run/lock > tmpfs 1.5G 0 1.5G 0% /sys/fs/cgroup > /dev/sda1 228M 133M 84M 62% /boot > /dev/mapper/localhost-tmp 2.3G 57K 2.2G 1% /tmp > /dev/mapper/localhost-var 2.7G 2.5G 55M 98% /var > /dev/mapper/localhost-home 257G 73G 172G 30% /home > tmpfs 297M 40K 297M 1% /run/user/1000 > > As my system has encrypted LVM, I suppose that I shall reduce some space > used for /home, and then use it to extend /, /usr, and /var logical > partitions. I think I did (or tried to do) something similar several years > ago, but forgot the proper procedure. Any link for a good tutorial is > welcomed. Thanks.
The shrinking of /home is the hard part. You MUST first unmount /home, then resize the file system, then resize the logical volume. umount /home Find out how big it is: resize2fs /dev/mapper/localhost-home Change the filesystem size: resize2fs /dev/mapper/localhost-home NEW-SIZE Change the partition size: lvextend --size 200G /dev/mapper/localhost-home The hard bit is working out what NEW-SIZE should be and having it such that you use all of the partition but without making the file system size greater than the partition size - ie getting the last few megabytes right. What I do is make NEW-SIZE 2GB smaller than I want (assuming that it still fits), the size I give to lvextend 1GB smaller - so it all works, but there is wasted space & it is not quite big enough. I then do: lvextend --size +1G --resizefs /dev/mapper/localhost-home Ie get lvextend to do the maths & work it out for me. Those who are cleverer than me might be able to tell you how to get it right first time! mount /home Extending the others is easy and can be done when the system is running & active, something like: lvextend --size +1G --resizefs /dev/mapper/localhost-var Finally: ensure that you have a good backup of /home before you start. -- Alain Williams Linux/GNU Consultant - Mail systems, Web sites, Networking, Programmer, IT Lecturer. +44 (0) 787 668 0256 https://www.phcomp.co.uk/ Parliament Hill Computers. Registration Information: https://www.phcomp.co.uk/Contact.html #include <std_disclaimer.h>
