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Reply-To: waxhead@dirtcellar.net
Subject: Re: Does btrfs filesystem defragment -r also include the trees?
To:     Qu Wenruo <quwenruo.btrfs@gmx.com>, joshua <joshua@mailmag.net>,
        Qu Wenruo <wqu@suse.com>
Cc:     Remi Gauvin <remi@georgianit.com>, dsterba@suse.cz,
        linux-btrfs <linux-btrfs@vger.kernel.org>
References: <44-64431b80-5-7f085200@250139773>
 <cd4024f7-3ff6-328a-08f5-7f405d5a9491@gmx.com>
From:   waxhead <waxhead@dirtcellar.net>
Message-ID: <1fbcdce2-a268-aa1d-1e6c-bb1e61e18ad9@dirtcellar.net>
Date:   Sun, 23 Apr 2023 11:34:37 +0200
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> 
> On 2023/4/22 07:25, joshua wrote:
>> For my situation, (and others with large arrays) yes definitely.
>> It's definitely the feature I'm most interested in patiently waiting 
>> for....
>>
> 
> You can already compile the current btrfs-progs release with 
> experimental features, which enables the "btrfstune -b" command to 
> convert your existing btrfs to the new feature.
> 
> I believe David would release the next btrfs-progs with bg tree moved to 
> regular features.
> 
> And even better, the new bg-tree feature is compat_ro, meaning 
> unsupported kernel can still mount the fs RO.
> 
> Thanks,
> Qu

And for those of us that have BTRFS as root? Would we live happily ever 
after or would GRUB choke on this?