need more system space

English Install/Boot/Login
1

Even with keeping only the latest snapper entries
and occasionally running /etc/cron.weekly/btrfs-balance
the 41gb for the system is not enough.

What’s the optimal solution here?


> df -hT
Filesystem     Type      Size  Used Avail Use% Mounted on
devtmpfs       devtmpfs  3.9G     0  3.9G   0% /dev
tmpfs          tmpfs     3.9G  268M  3.6G   7% /dev/shm
tmpfs          tmpfs     3.9G  1.8M  3.9G   1% /run
tmpfs          tmpfs     3.9G     0  3.9G   0% /sys/fs/cgroup
/dev/sda2      btrfs      41G   39G  1.4G  97% /
/dev/sda2      btrfs      41G   39G  1.4G  97% /boot/grub2/x86_64-efi
/dev/sda2      btrfs      41G   39G  1.4G  97% /var/lib/pgsql
/dev/sda4      xfs       176G  6.9G  169G   4% /home
/dev/sda2      btrfs      41G   39G  1.4G  97% /var/lib/mariadb
/dev/sda2      btrfs      41G   39G  1.4G  97% /var/tmp
/dev/sda2      btrfs      41G   39G  1.4G  97% /var/spool
/dev/sda2      btrfs      41G   39G  1.4G  97% /usr/local
/dev/sda2      btrfs      41G   39G  1.4G  97% /srv
/dev/sda2      btrfs      41G   39G  1.4G  97% /.snapshots
/dev/sda2      btrfs      41G   39G  1.4G  97% /var/lib/mailman
/dev/sda2      btrfs      41G   39G  1.4G  97% /var/lib/machines
/dev/sda2      btrfs      41G   39G  1.4G  97% /var/opt
/dev/sda2      btrfs      41G   39G  1.4G  97% /var/lib/named
/dev/sda2      btrfs      41G   39G  1.4G  97% /var/crash
/dev/sda2      btrfs      41G   39G  1.4G  97% /tmp
/dev/sda2      btrfs      41G   39G  1.4G  97% /opt
/dev/sda2      btrfs      41G   39G  1.4G  97% /var/lib/mysql
/dev/sda2      btrfs      41G   39G  1.4G  97% /boot/grub2/i386-pc
/dev/sda2      btrfs      41G   39G  1.4G  97% /var/lib/libvirt/images
/dev/sda2      btrfs      41G   39G  1.4G  97% /var/log
tmpfs          tmpfs     788M     0  788M   0% /run/user/474
tmpfs          tmpfs     788M   24K  788M   1% /run/user/1000
2

TW has lots and lots of changes frequently this makes bigger and more snapshots. Adjust the number of snapshots kept

https://en.opensuse.org/Portal:Snapper

3

Hi, are you actually encountering errors because it is full or only because it appears full? To check, please use the following command (df does not work properly on btrfs):

btrfs filesystem df /

Also, try checking the contents of /var/log/journal, I once had an interesting amount of data there (~2 GB).

4

Hi
Yes, then look at running the cron jobs manually to ensure it’s cleaned up…


/etc/cron.daily/suse.de-snapper
/etc/cron.weekly/btrfs-balance
5

By snapper entries I meant snapshots.
Limiting these and running /etc/cron.weekly/btrfs-balance is not sufficient.
With only 3 snapshots the partition is 91% filled (4.1gb available).

btrfs filesystem df /
shows even less available…
Data, single: total=36.99GiB, used=33.75GiB

> sudo /etc/cron.daily/suse.de-snapper
Failure (error.something).

6

Hi
Well if the snapper cron job isn’t working, how do you expect it to clean up snapshots?

Perhaps post the real error and use su - not sudo please.

7

“Perhaps post the real error”

Where is the real error?
Nothing else is printed.

8

Hi
Full output when you run the snapper command?


snapper list
/etc/cron.daily/suse.de-snapper
snapper list
9 
Type   | #   | Pre # | Date                            | User | Cleanup | Description           | Userdata     
-------+-----+-------+---------------------------------+------+---------+-----------------------+--------------
single | 0   |       |                                 | root |         | current               |              
single | 1   |       | Tue 19 Apr 2016 01:39:32 AM PDT | root |         | first root filesystem |              
single | 530 |       | Mon 11 Jul 2016 06:54:58 PM PDT | root |         |                       |              
pre    | 666 |       | Wed 02 Nov 2016 02:52:53 PM PDT | root | number  | zypp(zypper)          | important=yes

And please see https://forums.opensuse.org/showthread.php/520819-can-t-delete-snapshot-File-system-loop-detected

10

/var/log/journal was 1.1G

I was able to lower it via:
SystemMaxUse=64
in
/etc/systemd/journald.conf

11

For some reason I was keeping snapshot #1…
which once delete freed over 15gb. >_<