Resize lvm partitions
Before I forget, I write down the steps to resize my lvm partitions in my Debian laptop.
If the partition to resize is not the root or boot partition I can (re)boot into recovery mode. If it is the root or boot partition I may need to boot a live operating system.
If I want to decrease the partition first I must decrease the file system. Before anything, I should check the filesystem.
umount /usr/local e2fsck -fy /dev/mapper/yapaque--vg-usr--local resize2fs /dev/mapper/yapaque--vg-usr--local 29G
Here I must make sure that the new size is large enough so that the data fits.
Then I can reduce the partition to a size that is larger than size of the filesystem used above
lvreduce -L 30G /dev/yapaque-vg/usr-local
Note that the name is different, but I refer to the same partition.
Now I resize again the filesystem to take up all available space within the partition.
If I just want to extend the filesystem and I have space in the volume the procedure is slightly shorter. I extend the partition, check the filesystem and extend it to fill the partition.
umount /home lvextend -L +30G /dev/yapaque-vg/home e2fsck -fy /dev/mapper/yapaque--vg-home resize2fs /dev/mapper/yapaque--vg-home