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Date: Tue, 20 Sep 2016 16:56:50 +0900
From: Tomasz Chmielewski <mangoo@wpkg.org>
To: Peter Becker <floyd.net@gmail.com>
Cc: Hugo Mills <hugo@carfax.org.uk>, linux-btrfs <linux-btrfs@vger.kernel.org>
Subject: Re: how to understand "btrfs fi show" output? "No space left" issues
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On 2016-09-20 16:27, Peter Becker wrote:

> You have 417(total)-131(used) blocks wo are only partial filled.
> You should balance your file-system.

(...)

> #or a full balance
> btrfs balance start /mnt

OK, does it mean that btrfs needs some userspace daemon which does the 
following from time to time (how often?):

1) btrfs fi show /mountpoint(s)

2) if "used" is more than 90% (or 80%? or 70%?) of "size" - run a full 
balance

3) ...unless "btrfs fi df" shows that "used" is 95% (?) or more of 
"total", then don't bother, as we're "really" full

?


Tomasz Chmielewski
https://lxadm.com