What does btrfsmaintenance's btrfs-balance script do by default?

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1

It seems like if we use the default partitioning and the default /etc/sysconfig/btrfsmaintenance
then btrfs-balance.sh is equivalent to

btrfs balance start -dusage=0 /
btrfs balance start -v -dusage=5 /
btrfs balance start -v -dusage=10 /
btrfs balance start -v -musage=3 /

https://github.com/kdave/btrfsmaintenance/blob/master/btrfs-balance.sh
https://github.com/kdave/btrfsmaintenance/blob/master/sysconfig.btrfsmaintenance
https://build.opensuse.org/package/view_file/openSUSE:Factory/btrfsmaintenance/0002-sysconfig-reduce-default-balance-usage-thresholds-fa.patch?expand=1
https://forums.opensuse.org/showthread.php/537335-btrfsmaintenance-detect_mixed_bg-What-is-a-mixed-block-group

Am I reading that correctly?

2

I missed one.

btrfs balance start -dusage=0 /
btrfs balance start -v -dusage=5 /
btrfs balance start -v -dusage=10 /
btrfs balance start -musage=0 /
btrfs balance start -v -musage=3 /
3

IIRC balance does a number of things (not any one) and is important.
It’s so important, it’s described in a number of different places.

Besides the btrfs MAN page,
IIRC it’s mentioned in my collection of BTRFS links, one of my favorites to describe and extend MAN page info is the ArchWiki

My BTRFS links can be found on my main Wiki page
https://en.opensuse.org/User:Tsu2

TSU