Create a physical volume
the fdisk / dev / SDB
the partprobe / dev / SDB
the pvcreate / dev / sdb1
the vgcreate myvg / dev / sdb1
the lvcreate -L -n mydata. 5G myvg
LVS
the mke2fs -t ext4 / dev / myvg / mydata
man profile
/etc/man.config
cache file location
ls -l /etc/ld.so.cache
editing library file
vim /etc/ld.so.conf.d/mysql.conf
reload libraries
ldconfig -d
create head file link
ln -sv / usr / local / mysql / include / usr / include / mysql