Thanks for fast answer. I'm quite new in CP world so I might ask stupid questions. For logs you are talking about those I suppose:
/var/log/opt/CPsuite-R80.20/fw1/log/2021-11-03_180256_1.log: 2.0G
/var/log/opt/CPsuite-R80.20/fw1/log/2021-11-03_182829_2.log: 2.0G
/var/log/opt/CPsuite-R80.20/fw1/log/2021-11-03_184745_3.log: 2.0G
/var/log/opt/CPsuite-R80.20/fw1/log/2021-11-03_191308_4.log: 2.0G
/var/log/opt/CPsuite-R80.20/fw1/log/2021-11-03_201226_5.log: 2.0G
It is strange but they seems to be old and I don't know the history. I will delete them for sure but it will free space from /var/log and for fw1 I need to free some space from root. Or maybe I'm wrong?
On fw2 there are some other files that I think it's safe to be deleted but they are also in /vat/log except maybe newkerneldebug.txt
/var/log/CPView_history/CPViewDB_1563451952.dat: 1.1G
/var/log/CPView_history/CPViewDB_1579032199.dat: 1.1G
/var/log/CPView_history/CPViewDB.dat: 1.2G
/home/admin/newkerneldebug.txt: 1.7G
For management srv if I delete following maybe I'll delete my recent logs but it might not be a problem.
/var/log/opt/CPsuite-R80.20/fw1/log/2022-01-03_000000.log: 1.1G
/var/log/opt/CPsuite-R80.20/fw1/log/2022-01-04_000000.log: 1.1G
/var/log/opt/CPsuite-R80.20/fw1/log/2022-01-09_000000.log: 1.1G
....
That will solve my issue but only for /var/logs again.
Except some snapshots if there are any, what else can I delete to free space for root?
Or maybe to expand lv_current and lv_log as from vlm_manager I can see that there is some free space on both units and manager or it's not good idea?