Guaranteed way to break btrfs

[Josef Bacik]

There was a problem with 3.3 kernels that we fixed in 3.4, please try
Linus's most recent git tree and see if you have the same problems.
Thanks,

Josef

On Thu, Apr 19, 2012 at 10:23 AM, valent.turkovic at gmail.com
<valent.turkovic at gmail.com> wrote:
> Hi,
> I found a perfect way how you can test small file issue in btrfs
> because every time I tried it it breaks btrfs.
>
> I tried on several partition with over 200+GB of free space, and after
> starting openwrt compile process that creates few hundred thousand
> small files I get "out of space" error.
>
> On ext4 partition openwrt doesn't fail and it uses around 4GB of space.
> All test were done on Fedora 16 with Linux 3.3.0 kernel.
>
> And here are the instructions if you like to try out for yourself:
> http://wiki.openwrt.org/doc/howto/buildroot.exigence
> http://wiki.openwrt.org/doc/howto/build
>
> After finding out this issue I reformatted my /home and /storage
> partitions to ext4.
>
> I read on few mailing lists that this is an old and fixed btrfs issue,
> but it looks that (at least in Fedora) it still affect some extreme
> use cases, like building openwrt firmware.
>
> Cheers,
> Valent.
>
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