On 1/24/24 11:27 PM, Greg Wooledge wrote:
On Wed, Jan 24, 2024 at 10:43:51PM +0100, Miroslav Skoric wrote:I do not have root account.Sure you do. You might not have a root *password* set.(I use sudo from my user account.) I think I already tried rescue mode in the past but was not prompted for root password.You can set a root password: sudo passwd root That should allow you to enter single-user mode, or to login directly as root on a text console, both of which are things that you may need to do as a system administrator. Especially if you're trying to unmount /home.
Of course, sorry for my mixing terms. In fact I have never logged in directly as root so I thought the account was disabled or unusable.
In any case, after setting a root password I did this: 1. Log-out as user (in GUI) 2. Ctrl-Alt-F2 3. Log-in as root (in CLI) 4. # lvreduce --size -50G --resizefs /dev/mapper/localhost-home Do you want to unmount "/home" ? [Y|n] y ... ...Size of logical volume localhost/home changed from 261.00 GiB (66816 extents) to 211.00 GiB (54016 extents).
Logical volume localhost/home successfully resized. ... after reboot ... # df -h Filesystem Size Used Avail Use% Mounted on udev 1.5G 0 1.5G 0% /dev tmpfs 297M 8.9M 288M 3% /run /dev/mapper/localhost-root 6.2G 4.7G 1.2G 81% / /dev/mapper/localhost-usr 15G 11G 2.7G 80% /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 142M 74M 66% /boot /dev/mapper/localhost-home 208G 60G 138G 31% /home /dev/mapper/localhost-var 3.7G 2.0G 1.6G 57% /var /dev/mapper/localhost-tmp 2.3G 57K 2.2G 1% /tmp tmpfs 297M 32K 297M 1% /run/user/1000 # vgdisplay --- Volume group --- VG Name localhost System ID Format lvm2 Metadata Areas 1 Metadata Sequence No 21 VG Access read/write VG Status resizable MAX LV 0 Cur LV 6 Open LV 6 Max PV 0 Cur PV 1 Act PV 1 VG Size <297.85 GiB PE Size 4.00 MiB Total PE 76249 Alloc PE / Size 62346 / <243.54 GiB Free PE / Size 13903 / <54.31 GiB VG UUID fbCaw1-u3SN-2HCy-w6y8-v0nK-QsFE-FETNZM ... and then I extended /, /usr, and /var for 1GB each. Seems all ok. Thank you!