lvm and partitionning, copy folder

hi

when i installed suse 13.2, partitioning was done with lvm automatically but the system used only 40gig on 256 of my ssd.
i would like to create a volume group only for my home.

if i do that, what will happen with my home from my root group volume?
i would like to be moved to my new home group volume

is there a way to do it?

home is not a volume group but seem more like a logic volume (when i check in yast, i have: home, root, swap)

UUID=d8809622-1d17-48d7-b865-ffe6270cf000 / btrfs defaults 0 0
UUID=d8809622-1d17-48d7-b865-ffe6270cf000 /home btrfs subvol=home 0 0
UUID=d8809622-1d17-48d7-b865-ffe6270cf000 /opt btrfs subvol=opt 0 0
UUID=d8809622-1d17-48d7-b865-ffe6270cf000 /srv btrfs subvol=srv 0 0
UUID=d8809622-1d17-48d7-b865-ffe6270cf000 /tmp btrfs subvol=tmp 0 0
UUID=d8809622-1d17-48d7-b865-ffe6270cf000 /usr/local btrfs subvol=usr/local 0 0
UUID=d8809622-1d17-48d7-b865-ffe6270cf000 /var/crash btrfs subvol=var/crash 0 0
UUID=d8809622-1d17-48d7-b865-ffe6270cf000 /var/lib/mailman btrfs subvol=var/lib/mailman 0 0
UUID=d8809622-1d17-48d7-b865-ffe6270cf000 /var/lib/named btrfs subvol=var/lib/named 0 0
UUID=d8809622-1d17-48d7-b865-ffe6270cf000 /var/lib/pgsql btrfs subvol=var/lib/pgsql 0 0
UUID=d8809622-1d17-48d7-b865-ffe6270cf000 /var/log btrfs subvol=var/log 0 0
UUID=d8809622-1d17-48d7-b865-ffe6270cf000 /var/opt btrfs subvol=var/opt 0 0
UUID=d8809622-1d17-48d7-b865-ffe6270cf000 /var/spool btrfs subvol=var/spool 0 0
UUID=d8809622-1d17-48d7-b865-ffe6270cf000 /var/tmp btrfs subvol=var/tmp 0 0
UUID=8f2c9905-0472-4242-9896-df6465319619 /boot btrfs defaults 0 0

lvmdiskscan
WARNING: lvmetad is running but disabled. Restart lvmetad before enabling it!
/dev/mapper/cr_ata-Samsung_SSD_840_PRO_Series_S12RNEACC41938F-part3 237,93 GiB] LVM physical volume
/dev/sda1 156,00 MiB]
/dev/system/root 40,00 GiB]
/dev/sda2 400,00 MiB]
/dev/system/swap 2,00 GiB]
/dev/sda3 237,93 GiB]
/dev/system/home 195,93 GiB]
/dev/sdb1 300,00 MiB]
/dev/sdb2 100,00 MiB]
/dev/sdb3 128,00 MiB]
/dev/sdb4 118,73 GiB]

Why a volume group, rather than just a partition for “/home”?

In any case, what you would need is:

(1) create the new “/home”;
(2) format it as needed;
(3) copy your current “/home” to the new version;
(4) modify “/etc/fstab” so that the new “/home” is automatically mounted.

If I were doing that, I would try to do it all while booted from live media (the live rescue CD or a live Gnome or KDE disk or usb).

Once done, the space in your old “/home” could be made available to its volume group for reassignment to other volumes. Maybe you could then shrink that volume group, but that’s probably risky.

because the rest of the system use lvm… easier to maintain

anyway that worked

i create a new logical volume and copied with cp the file.