Another LVs reconfiguration on ArchLinux as of 03/01/2036

Create root and home LVs as suggested by system during arch-install run-time . In general, we follow approach proposed in https://www.dwarmstrong.org/install-lmde-with-custom-lvm-luks/ a while ago for LMDE 6. Upon completion drop to root's shell and update default LV's layout as shown below ( just for instance)

root~# lsblk -f

root~# vgs

root~# lvs

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Now we resize home LV
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root~# umount /mnt/home
root~# lvresize -L 15G --resizefs ArchinstallVg/home
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Now we resize root LV
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root~# lvresize -L 41G --resizefs ArchinstallVg/root
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Create varpool LV with ext4 filesystem
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root~# lvcreate -L 32G ArchinstallVg -n varpool
root~# mkfs.ext4 /dev/ArchinstallVg/varpool
 

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Perform mounts of LVs as follows

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root~# mount /dev/ArchinstallVg/root /mnt/root/
root~# mount /dev/ArchinstallVg/varpool /mnt/var/
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Move the contents of /var from the root LV to the new varpool's  LV:
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root~# mv /mnt/root/var/* /mnt/var
 

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Update fstab
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Create an entry for /var in /mnt/root/etc/fstab:

root~# echo "/dev/mapper/ArchinstallVg-varpool /var ext4  defaults 0 2" >> /mnt/root/etc/fstab

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Unmount folders below
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root~# umount /mnt/var
root~# umount /mnt/root

and

root~# reboot