Re: btrfs is using 25% more disk than it should

[Phillip Susi <psusi@ubuntu.com>]

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On 12/19/2014 4:15 PM, Josef Bacik wrote:
> Please God don't turn off of checksums.  Checksums are tracked in 
> metadata anyway, they won't show up in the data accounting.  Our
> csums are 8 bytes per block, so basic math says you are going to
> max out at 604 megabytes for that big of a file.

Yes, and it is exactly that metadata space he is complaining about.
So if you don't want to use up all of that space ( and have no use for
the checksums ), then you turn them off.

> Please people try to only take advice from people who know what
> they are talking about.  So unless it's from somebody who has
> commits in btrfs/btrfs-progs take their feedback with a grain of
> salt.  Thanks,

Well that is rather arrogant and rude.  For that matter, I *do* have
commits in btrfs-progs.


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