[Lxc-users] rootfs backup

[matthew byers]

Yea i know btrfs has snapshot abilities but my entire server is ext4. I
could format a extra drive with btrfs. Would that allow me to use btrfs for
containers? Are there any other ideas or processes i can try out?

On Thu, Jan 6, 2011 at 12:50 PM, C Anthony Risinger <anthony at extof.me>wrote:

> On Thu, Jan 6, 2011 at 12:02 PM, Noah Campbell <noahcampbell at gmail.com>
> wrote:
> >
> > With my limited knowledge of lxc, I would recommend looking at a
> filesystem that supports snapshots.
>
> yes, in the past i've used btrfs for this (.32 kernel).  some will say
> that it's not suitable for use (and in some situations it may not be),
> but imo, it's stable enough for my uses; i've had a server running
> since .32 was released (2 yrs?) hosting several btrfs-based containers
> without any issue... and btrfs was only considered "ready for early
> adopters" at that point.
>
> using a couple of template subvolumes, i was able to snapshot them
> into usable domains in < 1 second, and create backups just as fast,
> while at the same time reusing blocks and saving enormous amounts of
> disk space.
>
> works like a treat :-) i plan on using it extensively very soon for an
> updated KVM+LXC server using libvirt.
>
> C Anthony
>
> ps....depending on how... bold... you are, there are LZO compression
> patches queued for .38:
>
> http://www.spinics.net/lists/linux-btrfs/msg07748.html
>
> and some dedup work is basic but workable:
>
> http://www.spinics.net/lists/linux-btrfs/msg07819.html
> http://www.spinics.net/lists/linux-btrfs/msg07820.html
>
> both will be very useful for containerized environments.
>



-- 
God Bless
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