tv_record fails

[morskoyzmey]

With default config + these settings can't get demo file recording:

tv_enable 0
tv_record_immediate 1

tv_record test
ClientPutInServer create new player controller [DemoRecorder]
CDemoFile::Open: couldn't open file test.dem for writing.
StartRecording: couldn't open replay file test.dem.

Even setting all folders to 777 makes no difference.

UPD. I was able to get it work with absolute path:
tv_record /home/container/game/csgo/demos/test

UPD2. Can't write backup files.
Failed to write backup_round02.txt!