Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]
Groups > linux.debian.user > #266453
| From | Alain D D Williams <addw@phcomp.co.uk> |
|---|---|
| Newsgroups | linux.debian.user |
| Subject | Re: Resizing LVM partitions |
| Date | 2024-01-22 16:20 +0100 |
| Message-ID | <HZ4fD-4Qcu-13@gated-at.bofh.it> (permalink) |
| References | <HZ3Wi-4PQj-9@gated-at.bofh.it> |
| Organization | Parliament Hill Computers Ltd |
On Mon, Jan 22, 2024 at 03:32:30PM +0100, skoric@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>
Back to linux.debian.user | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread
Resizing LVM partitions skoric@uns.ac.rs - 2024-01-22 16:00 +0100
Re: Resizing LVM partitions Alain D D Williams <addw@phcomp.co.uk> - 2024-01-22 16:20 +0100
Re: Resizing LVM partitions Stefan Monnier <monnier@iro.umontreal.ca> - 2024-01-22 16:40 +0100
Re: Resizing LVM partitions Alain D D Williams <addw@phcomp.co.uk> - 2024-01-22 16:50 +0100
Re: Resizing LVM partitions <tomas@tuxteam.de> - 2024-01-22 19:00 +0100
Re: Resizing LVM partitions Miroslav Skoric <skoric@uns.ac.rs> - 2024-01-22 23:20 +0100
Re: Resizing LVM partitions <tomas@tuxteam.de> - 2024-01-23 06:50 +0100
Re: Resizing LVM partitions Andy Smith <andy@strugglers.net> - 2024-01-23 07:40 +0100
Re: Resizing LVM partitions Miroslav Skoric <skoric@uns.ac.rs> - 2024-01-24 00:40 +0100
Re: Resizing LVM partitions Greg Wooledge <greg@wooledge.org> - 2024-01-24 00:50 +0100
Re: Resizing LVM partitions <tomas@tuxteam.de> - 2024-01-24 06:50 +0100
Re: Resizing LVM partitions Greg Wooledge <greg@wooledge.org> - 2024-01-24 13:10 +0100
Re: Resizing LVM partitions Miroslav Skoric <skoric@uns.ac.rs> - 2024-01-24 23:10 +0100
Re: Resizing LVM partitions Greg Wooledge <greg@wooledge.org> - 2024-01-24 23:30 +0100
Re: Resizing LVM partitions Stefan Monnier <monnier@iro.umontreal.ca> - 2024-01-25 15:20 +0100
Re: Resizing LVM partitions Miroslav Skoric <skoric@uns.ac.rs> - 2024-01-26 13:40 +0100
Re: Resizing LVM partitions Max Nikulin <manikulin@gmail.com> - 2024-01-24 03:30 +0100
Re: Resizing LVM partitions Miroslav Skoric <skoric@uns.ac.rs> - 2024-01-24 23:20 +0100
On the deprecation of separate /usr (Was: Re: Resizing LVM partitions) Andy Smith <andy@strugglers.net> - 2024-01-24 23:30 +0100
Re: Resizing LVM partitions Andy Smith <andy@strugglers.net> - 2024-01-24 13:10 +0100
Re: Resizing LVM partitions Miroslav Skoric <skoric@uns.ac.rs> - 2024-01-22 23:20 +0100
Re: Resizing LVM partitions Greg Wooledge <greg@wooledge.org> - 2024-01-22 23:30 +0100
Re: Resizing LVM partitions Miroslav Skoric <skoric@uns.ac.rs> - 2024-01-24 00:40 +0100
Re: Resizing LVM partitions Greg Wooledge <greg@wooledge.org> - 2024-01-22 17:10 +0100
Re: Resizing LVM partitions <tomas@tuxteam.de> - 2024-01-22 19:10 +0100
Re: Resizing LVM partitions Greg Wooledge <greg@wooledge.org> - 2024-01-22 19:50 +0100
Re: Resizing LVM partitions Miroslav Skoric <skoric@uns.ac.rs> - 2024-01-24 00:40 +0100
Re: Resizing LVM partitions Miroslav Skoric <skoric@uns.ac.rs> - 2024-01-24 00:40 +0100
Re: Resizing LVM partitions Gremlin <scott-andrews@columbus.rr.com> - 2024-01-22 19:20 +0100
Re: Resizing LVM partitions Greg Wooledge <greg@wooledge.org> - 2024-01-22 19:50 +0100
Re: Resizing LVM partitions Miroslav Skoric <skoric@uns.ac.rs> - 2024-01-22 23:20 +0100
csiph-web