Thoughts about EXT4 optional in Jaunty Development & questions about Plymouth

[Chris Jones]

Message: 2
Date: Wed, 26 Nov 2008 10:01:03 +0000
From: Matthew Paul Thomas <mpt at canonical.com>
Subject: Re: Thoughts about EXT4 optional in Jaunty Development &
        questions       about Plymouth
To: ubuntu-devel-discuss Dev <ubuntu-devel-discuss at lists.ubuntu.com>
Message-ID: <355b967ee3bbb41cb9997ac65cc2e063 at canonical.com>
Content-Type: text/plain; charset="us-ascii"

On Nov 24, 2008, at 12:07 AM, Dean Loros wrote:
> ...
> There has been talk in the testing group about Plymouth & possible
> replacement of Usplash...IMO Plymouth provides a better user
experience
> due to a "more" seamless blending of Grub, Kernel boot & GDM. I
realize
> that there could be "issues" with this, but it could also net a more
> positive user experience .
> ...

Plymouth is scheduled for discussion at the Ubuntu Developer Summit two 
weeks from now. 
<https://blueprints.launchpad.net/ubuntu/+spec/plymouth>

Cheers
-- 
Matthew Paul Thomas
http://mpt.net.nz/


*******************************************************


Just thought it was worth mentioning that it's certainly possible to use
ext4 on Ubuntu already. I'm using it for my 2 data hard drives which
were originally ext3. But ext4 is backward compatible and therefore has
the capability to mount ext3 partitions and ext4.

Here's what I done (as I posted in a recent forum):

First you have to enable the system to mount ext4 because Ubuntu still
flags ext4 file system as experimental as is therefore disabled by
default.

ubuntu% sudo tune2fs -E test_fs /dev/your_drive_partition

And then you simply have to mount the drive.

ubuntu% sudo mount /dev/your_drive_partition -t ext4dev /media/your_mount_directory

Done.

A quick check with df to see if it worked.

ubuntu% df -T

It worked. Here's what mine looks like. The last 2 entries are the ext4
mounts. You'll notice that they are flagged as ext4dev, that's because
(as mentioned) Ubuntu still flags ext4 as experimental, even though it's
not.

ubuntu% df -T
Filesystem Type   1K-blocks Used Available Use% Mounted on
/dev/sda6      jfs    17549600   4258296  13291304  25% /
tmpfs        tmpfs      250364         0    250364   0% /lib/init/rw
varrun       tmpfs      250364       324    250040   1% /var/run
varlock      tmpfs      250364         0    250364   0% /var/lock
udev         tmpfs      250364      2872    247492   2% /dev
tmpfs        tmpfs      250364         0    250364   0% /dev/shm
lrm          tmpfs      250364      2380    247984   1% /lib/modules/2.6.27-7-generic/volatile
/dev/sda1      jfs      495712     13176    482536   3% /boot
/dev/sda5     ext2    55599836  25436932  27903524  48% /home
/dev/sdb1  ext4dev   157566568  45810908 103751680  31% /home/chris/disk
/dev/sdc1  ext4dev   307663800 256501836  35778776  88% /home/chris/disk-1

For the record too, it's definitely snappier with both read/write on the
simple real world tests that I done.


Regards

-- 
Chris Jones <chrisjones at comcen.com.au>