[prev in list] [next in list] [prev in thread] [next in thread] 

List:       linux-btrfs
Subject:    Re: idea about internal fragmentation in Btrfs
From:       Zhihui Zhang <zzhsuny () gmail ! com>
Date:       2010-06-19 20:20:54
Message-ID: AANLkTikSD70wX4eBi6GZyOSqL478dmT8_eEmYzz9zzk9 () mail ! gmail ! com
[Download RAW message or body]

Makes perfect sense. No wonder some btrfs folks used to work on
reiserfs/4. I hope a solution can be or has been found.

On Sat, Jun 19, 2010 at 4:51 PM, Andi Kleen <andi@firstfloor.org> wrote:
> Zhihui Zhang <zzhsuny@gmail.com> writes:
>
>> I wish Btrfs well, so I would venture an idea for this specific case
>> mentioned by Edward Shishkin today.
>>
>> Everyone knows that B-tree has internal and leaf nodes.  Can we make
>> the root as the leaf?  In other words, if you
>> create a 2K file, the B-tree will have only one node, which is both
>> the root and the leaf. Of course, you need some flag to
>> say this is a "degenerated" form of B-tree. Please cc me if you want
>> my response.
>
> You need to copy linux-btrfs to reach btrfs developers.
> Ccs added
>
> The problem with your idea is that on btrfs there's only
> a single tree for the whole fs (or whole snapshot rather)
> So it would only work for a single file because there's
> only a single root.
>
> -Andi
> --
> ak@linux.intel.com -- Speaking for myself only.
>
--
To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
[prev in list] [next in list] [prev in thread] [next in thread]