how to make inactive lvm active

If any how reasons your lvm becomes active state to inative state then we need to use below commands to make lvm active.

root@server ~]# lvchange -a y mylv

[root@server ~]# mount /dev/myvg/mylv /mnt
[root@server ~]# df
Filesystem           1K-blocks      Used Available Use% Mounted on
/dev/yourvg/yourlv    24507776        32  24507744   1% /mnt
/dev/myvg/mylv        24507776        32  24507744   1% /mnt