Re: Massive overhead even after deleting checkpoints

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On Fri, Jan 17, 2025 at 2:25 AM Ryusuke Konishi
<konishi.ryusuke@xxxxxxxxx> wrote:
> GC runs automatically in the background based on the watermark
> conditions set in /etc/nilfs_cleanerd.conf, even if you don't run the
> nilfs-clean command.

When I run `nilfs-clean` with options such as `--protection-period=0`,
will that change the settings of `cleanerd` until the next reboot? Or do
the options only apply to a single GC run?

> If you want to ignore this ratio and force GC, use the "-m" option,
> like this:
>
> # nilfs-clean -S 20/0.1 -p 0 -m 5

Thanks!

Regarding `-S 20/0.1`, that means the cleaning happens 20 times for
every 0.1 seconds? And each time `nsegments_per_clean` /
`mc_nsegments_per_clean` are cleaned?

> LFS is a legacy method and is not common

“not common” I understand, but why legacy? What does supersede it?

High frequency snapshotting is something I am missing from other file
systems.





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