On 31/10/2019 17:02, Janne Johansson wrote:
I thought about protecting everything with a proper full ratio, but I
really afraid of the perspective of some human error (raising fullratio
too high to help to recover some 'very important data asap') which would
leave cluster broken for real. Those few Gb would be the next line of
defense. It's better to have a downtime than 'unable to recover' situation.
Den tors 31 okt. 2019 kl 15:07 skrev George Shuklin
<[email protected] <mailto:[email protected]>>:
Thank you everyone, I got it. There is no way to fix out-of-space
bluestore without expanding it.
Therefore, in production we would stick with 99%FREE size for LV,
as it
gives operators 'last chance' to repair the cluster in case of
emergency. It's a bit unfortunate that we need to give up the
whole per
cent (1 % is too much for 4Tb drives).
In production, stuff with start giving warnings at 85%, so you would
just not get into this kinds of situations where the last percent
matters or not.
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