Re: Kernel 5.4 - BTRFS FS shows full with about 600 GB Free ?

[Qu Wenruo <quwenruo.btrfs@gmx.com>]

On 2019/12/21 下午8:07, Swâmi Petaramesh wrote:
> Le 21/12/2019 à 13:00, Qu Wenruo a écrit :
>> A known regression introduced in v5.4.
>>
>> The new metadata over-commit behavior conflicts with an existing check
>> in btrfs_statfs().
>> It is completely a runtime false behavior, and had*no*  other bad effect.
>
> Many thanks to you for the quick explanation.
>
> I understand « no other bad effect » as « The FS will be OK again when
> this is fixed in the kernel, I can leave the disk in my drawer in the
> mean time » ?

You can even use it without any problem with v5.4 kernel, except the
`df` will sometimes bother you.

>
> Well I find that makes several recent problematic regressions in
> BTRFS... 5.2... 5.4...

That's why we have LTS, and commercial company baked kernels.

Thanks,
Qu

>
> I'm starting worrying about this development model.
>
> Something as serious as an « Enterprise grade filesystem » that has been
> under heavy development for about ten years is not supposed to be a toy
> that breaks every now and then and couple patches is it ?
>
> Or it would mean that it would ever stay a toy, not an enterprise-grade
> FS...
>
> Kind regards.
>