Xfs变相缩容方法一则

vgcreate xfs_test /dev/sdb
lvcreate -L 500M  -n xfs_s  /dev/xfs_test
lvcreate -L 200M  -n xfs_d  /dev/xfs_test
mkfs.xfs /dev/xfs_test/xfs_s
mkfs.xfs /dev/xfs_test/xfs_d
cd /tmp
mkdir s
mkdir d
mount /dev/xfs_test/xfs_s  /tmp/s
mount /dev/xfs_test/xfs_d  /tmp/d
cd /tmp/s
touch 1 2 3 4 5 6
ls
cd /
xfsdump -J - /tmp/s | xfsrestore -J - /tmp/d