[kwlug-disc] Docker Host Appliance

[Chris Irwin]

On Tue, Jan 17, 2023, at 11:40, Hubert Chathi wrote:
> On Mon, 16 Jan 2023 17:45:25 -0500, Chris Irwin via kwlug-disc <kwlug-disc at kwlug.org> said:
> 
> [...]
> 
> > People claim ZFS handles databases/VMs better than btrfs, but I don't
> > really see how since it appears to use the same COW semantics. Perhaps
> > it's just hidden behind better caching.
> 
> FWIW, you can disable COW on btrfs for certain files, if you want better
> performance for databases/VM images by using the +C file attribute .

True, but if you're disabling COW, you're probably using the wrong filesystem.

* You will lose any and all data integrity on those files, as checksumming won't occur.

* Snapshots rely on COW, so if you snapshot a file with COW disabled, writes will be COW anyway.

If you're not using snapshots, and don't have any data integrity, there's really no reason to use btrfs.

-- 
*Chris Irwin*

email:   chris at chrisirwin.ca
  web: https://chrisirwin.ca
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