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Clark
Asked: 2011-08-25 04:23:44 +0800 CST

LVM resize /home and /

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Here are my partitions:

[awake@desktop ~]$ sudo df -h
Filesystem            Size  Used Avail Use% Mounted on
rootfs                 36G  2.5G   33G   8% /
udev                  495M     0  495M   0% /dev
tmpfs                 502M  260K  502M   1% /dev/shm
tmpfs                 502M  748K  501M   1% /run
/dev/mapper/vg_desktop-lv_root
                       36G  2.5G   33G   8% /
tmpfs                 502M     0  502M   0% /sys/fs/cgroup
tmpfs                 502M     0  502M   0% /media
/dev/sda1             485M   50M  410M  11% /boot
/dev/mapper/vg_desktop-lv_home
                       36G   20G   15G  59% /home
/dev/mapper/vg_desktop-lv_root
                       36G  2.5G   33G   8% /tmp
/dev/mapper/vg_desktop-lv_root
                       36G  2.5G   33G   8% /var/tmp
/dev/mapper/vg_desktop-lv_home
                       36G   20G   15G  59% /home
/dev/sdb5             932G  637G  295G  69% /media/Новый том

So I have no any free space. How to send a part of / partitions size to /home in encrypted lvm without data loosing?

partition lvm

1 Answers

  1. Best Answer

    To shrink a filesystem to XX GB, you might want to follow these steps :

    • umount the filesystem you want to shrink
    • Run a fsck on the filesystem
    • Resize the filesystem with resize2fs /dev/blah XXG
    • lvreduce -L XXG /dev/blah

    Then you can extend the other filesystem online : - lvextend -L YYG /dev/blah - resize2fs /dev/blah

    That should make it, of course if you want to shrink /, you can boot on a live CD/USB key :)

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