From: Martin <m_btrfs@ml1.co.uk>
To: linux-btrfs@vger.kernel.org
Subject: Re: btrfs (general) raid for other filesystems?
Date: Sun, 19 May 2013 19:59:03 +0100 [thread overview]
Message-ID: <knb7di$8ee$1@ger.gmane.org> (raw)
In-Reply-To: <CAFvQSYQObGsKCf3iPtErfFvdQv6vqwc_KNAm5wt763ChrZWtUA@mail.gmail.com>
On 19/05/13 18:39, Clemens Eisserer wrote:
> Hi Martin,
>
>> So, an interesting variation could be to have filesystem level raid
>> operating on ext4 or nilfs or whatever... Would that be a sensible idea?
>
> Thats already supported by using LVM. What do you think you would gain
> from layering in top of btrfs?
md-raid and lvm-raid are raid at the block level.
btrfs-raid offers a greater variety and far greater flexibility of raid
options individually for filedata and metadata at the filesystem level.
raid at the filesystem level should also gain higher performance over
that of just blindly replicating blocks of binary data across devices at
the block level.
My thoughts are to take advantage of the btrfs-raid work being done but
for all filesystems. Hence, we can then have a very flexible raid
available for whatever filesystem might be best for any underlying device.
OK... So we make all of lvm, md-raid, and drbd all redundant!
Regards,
Martin
next prev parent reply other threads:[~2013-05-19 18:59 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-05-19 17:31 btrfs (general) raid for other filesystems? Martin
2013-05-19 17:39 ` Clemens Eisserer
2013-05-19 18:59 ` Martin [this message]
2013-05-19 19:34 ` Chris Murphy
2013-05-20 9:22 ` Martin
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