separate /var on btrfs is it recomendated or not?

[st834]

Hello,

I use Gentoo on btrfs and this question is more theoretical than a description of the problem.

Is it advisable (recommended) or not to use/var in a separate section (in the case of btrfs - subvolume)?

I have read a large number of different manuals about recommendated shemas of disk partitioning. For example, Fedora or Arch indicate that some parts of /var are strongly related to other parts of the file system and it is not recommended to put them in a separate tray. At the same time, nested parts/var, such as/var/www/.. ,/var/tmp/portage can be placed in a separate sub-volume without any problems.

The issues of uneven filling of sections for btrfs are not very relevant. If /var is placed in a separate subvolume, it is excluded from system snapshots. If some parts of /var are related to other elements of the system, then the snapshot will not be complete if /var is placed on a separate partition.

When reading the Gentoo documentation (installation and btrfs), I did not find any restrictions and information about whether Gentoo (maybe it is common for all systems) has the same relationship between /var elements and other parts of the system? Is it really advisable to place/var in a separate sub-volume?

Thanks a lot for any answers

[pietinger]

[st834]

Thank so much for answer!

I used to mount /var/tmp/portage as zram with ext4 file system according Gentoo guide.

[pietinger]

[st834]

Thanks for approving !