why all recording and everything writing in /dev/mapper/VolGroup-lv_root and /dev/mapper/VolGroup-lv_home not wiriting in this partition ??? space empty 1% only while other partition 50%
It would be interesting to know how you installed your system, using LVM and this particular partitioning scheme would seem somewhat wasteful on a “normal” Asterisk/FreePBX system, the largest file system structure would always be /var not /home it includes the ever growing /var/log /var/lib/asterisk /var/spool/asterisk and /var/lib/mysql structures, all the stuff in your root partion “/” (excepting those mentioned) would be pretty well static until you updated your OS or software.
You should google “Linux LVM”, it is easily possible, but as you can’t even state how you installed your system, you might well be “out of your depth” yet