Steps to reproduce:
1. Install 9.0
2. Upgrade to 9.2 from http://mirror.fuel-infra.org/mos-repos/centos/mos9.0-centos7/snapshots/proposed-2017-01-13-184421/x86_64
3. Deploy big cluster (~400 nodes in my case)
5. Create snapshot
Snapshot created without any errors in UI but snapshot is empty
In timmy.logs
2017-01-19 09:32:32,812 INFO: nodes: is_enough_space(): logsize: 248565MB * 1.05, free space: 177476MB
2017-01-19 09:32:32,812 ERROR: nodes: is_enough_space(): Not enough space in "/var/dump/fuel-snapshot-2017-01-19_09-32-03", logsize: 248565MB * 1.05, available: 177476MB. Decrease logs_size_coefficient config parameter (--logs-coeff CLI parameter) or free up space.
2017-01-19 09:32:32,812 ERROR: cli: main(): Not enough space for logs in "/var/dump/fuel-snapshot-2017-01-19_09-32-03", exiting.
[root@fuel log]# timmy -V
1.20.3
[root@fuel ~]# df -m
Filesystem 1M-blocks Used Available Use% Mounted on
/dev/mapper/os-root 9715 2511 6689 28% /
devtmpfs 62865 0 62865 0% /dev
tmpfs 62876 0 62876 0% /dev/shm
tmpfs 62876 233 62643 1% /run
tmpfs 62876 0 62876 0% /sys/fs/cgroup
/dev/vda3 197 129 68 66% /boot
/dev/vda2 200 0 200 0% /boot/efi
/dev/mapper/os-var 191771 4581 177427 3% /var
/dev/mapper/
tmpfs 12576 0 12576 0% /run/user/0