Thoughts about EXT4 optional in Jaunty Development & questions about Plymouth
chrisjones at comcen.com.au
Mon Dec 1 23:58:34 UTC 2008
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
> due to a "more" seamless blending of Grub, Kernel boot & GDM. I
> 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.
Matthew Paul Thomas
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
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
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
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.
Chris Jones <chrisjones at comcen.com.au>
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