BTRFS Question...

[Manuel Escudero]

Hi! Just Have a Little Question:

¿Are we going to have BTRFS as an option in Fedora 15 LiveCD's?

is there anyway to "pass" that option to the installer or if I want to use
BTRFS I should download the DVD (Don't really Want to)

Thanks!

[Bruno Wolff III]

On Mon, Mar 07, 2011 at 14:57:03 -0600,
  Manuel Escudero  wrote:
> Hi! Just Have a Little Question:
>
> ¿Are we going to have BTRFS as an option in Fedora 15 LiveCD's?
>
> is there anyway to "pass" that option to the installer or if I want to use
> BTRFS I should download the DVD (Don't really Want to)

Not for the root partition. The live images do some fancy tricks to speed
up the install that requires the root partition to use the same file system
as on the spin.

[Mike Chambers]

On Mon, 2011-03-07 at 14:57 -0600, Manuel Escudero wrote:
> Hi! Just Have a Little Question:
>
> ¿Are we going to have BTRFS as an option in Fedora 15 LiveCD's?
>
> is there anyway to "pass" that option to the installer or if I want to
> use BTRFS I should download the DVD (Don't really Want to)
> From what I saw, that option is available as I am pretty sure I saw it

during the partitioning section, when you format your partitions.

[Bruno Wolff III]

On Mon, Mar 07, 2011 at 16:32:07 -0600,
  Mike Chambers  wrote:
> On Mon, 2011-03-07 at 14:57 -0600, Manuel Escudero wrote:
> > Hi! Just Have a Little Question:
> >
> > ¿Are we going to have BTRFS as an option in Fedora 15 LiveCD's?
> >
> > is there anyway to "pass" that option to the installer or if I want to
> > use BTRFS I should download the DVD (Don't really Want to)
>
> From what I saw, that option is available as I am pretty sure I saw it
> during the partitioning section, when you format your partitions.

Maybe there is some fallback to a slower path when you do that. The primary
method is to dd over the file system and then resize it to match the size
of the partition. That won't work with BTRFS if the file system being copied
is ext4.

[Michael Cronenworth]

Bruno Wolff III wrote:
> Maybe there is some fallback to a slower path when you do that. The primary
> method is to dd over the file system and then resize it to match the size
> of the partition. That won't work with BTRFS if the file system being copied
> is ext4.

You're not out of luck though. After the installer copies the ext4 
install image, anaconda could run "btrfs-convert /dev/foo" and give you 
a btrfs file system. The user even has the option to roll-back to ext4 
later (with the caveat of losing any btrfs changes).

Just a thought.

[Manuel Escudero]

2011/3/7 Michael Cronenworth
> Bruno Wolff III wrote:
> > Maybe there is some fallback to a slower path when you do that. The
>
> primary
> > method is to dd over the file system and then resize it to match the size
> > of the partition. That won't work with BTRFS if the file system being
>
> copied
> > is ext4.
>
> You're not out of luck though. After the installer copies the ext4
> install image, anaconda could run "btrfs-convert /dev/foo" and give you
> a btrfs file system. The user even has the option to roll-back to ext4
> later (with the caveat of losing any btrfs changes).
> Just a thought.
>
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Didn't Quite got my answer, the thing is, I Know in Fedora's 15 DVD we will
have the Option to select BTRFS as the Default filesystem.

I was wondering if there's a way to pass this option or have it using the
LiveCD images to install, I just Dont Like the DVD
The Idea is to ask anaconda to format the most of my HDD as it can with
BTRFS when I install F15. Will I be able to do this from the LiveCD?

Thanks again

[Konstantin Svist]

On 03/07/2011 10:23 PM, Manuel Escudero wrote:
> 2011/3/7 Michael Cronenworth <[e-mail] >
> You're not out of luck though. After the installer copies the ext4
> install image, anaconda could run "btrfs-convert /dev/foo" and
> give you
> a btrfs file system. The user even has the option to roll-back to ext4
> later (with the caveat of losing any btrfs changes).
>
> Just a thought.
> Didn't Quite got my answer, the thing is, I Know in Fedora's 15 DVD we 
> will have the Option to select BTRFS as the Default filesystem.
>
> I was wondering if there's a way to pass this option or have it using 
> the LiveCD images to install, I just Dont Like the DVD
> The Idea is to ask anaconda to format the most of my HDD as it can 
> with BTRFS when I install F15. Will I be able to do this from the LiveCD?

As Michael said, there's a convenient utility to convert your ext4 to 
btrfs, which can be installed with a few commands (if it doesn't come on 
the LiveCD).
This is actually a Good Thing since btrfs doesn't even have fsck yet and 
so isn't meant for the average user.

BTW, I tried using btrfs on a test machine and managed to kill it 
completely in a few hours without trying.

HTH