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* [Buildroot] Ext4 rootfs option
@ 2012-02-08  7:14 Mark Constable
  2012-02-08 21:24 ` Thomas Petazzoni
  0 siblings, 1 reply; 6+ messages in thread
From: Mark Constable @ 2012-02-08  7:14 UTC (permalink / raw)
  To: buildroot

Is it worth my while to provide some (first time newbie) patches
for a ext4 rootfs?

I've read some reports it's faster than ext2 on flash, when
journaling is disable, and I need it for HDD installs anway.

^ permalink raw reply	[flat|nested] 6+ messages in thread
* [Buildroot] Ext4 rootfs option
  2012-02-08  7:14 [Buildroot] Ext4 rootfs option Mark Constable
@ 2012-02-08 21:24 ` Thomas Petazzoni
  2012-02-08 22:10   ` Arnout Vandecappelle
  0 siblings, 1 reply; 6+ messages in thread
From: Thomas Petazzoni @ 2012-02-08 21:24 UTC (permalink / raw)
  To: buildroot

Hello,

Le Wed, 08 Feb 2012 17:14:00 +1000,
Mark Constable <markc@renta.net> a ?crit :

> Is it worth my while to provide some (first time newbie) patches
> for a ext4 rootfs?

Sure!

How do you generate ext4 images? You use genext2fs and then some other
commands to enable ext4-specific features? Is there another utility?

Best regards,

Thomas Petazzoni
-- 
Thomas Petazzoni, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com

^ permalink raw reply	[flat|nested] 6+ messages in thread
* [Buildroot] Ext4 rootfs option
  2012-02-08 21:24 ` Thomas Petazzoni
@ 2012-02-08 22:10   ` Arnout Vandecappelle
  2012-02-08 22:15     ` Peter Korsgaard
  0 siblings, 1 reply; 6+ messages in thread
From: Arnout Vandecappelle @ 2012-02-08 22:10 UTC (permalink / raw)
  To: buildroot

On Wednesday 08 February 2012 22:24:45 Thomas Petazzoni wrote:
> Hello,
> 
> Le Wed, 08 Feb 2012 17:14:00 +1000,
> Mark Constable <markc@renta.net> a ?crit :
> 
> > Is it worth my while to provide some (first time newbie) patches
> > for a ext4 rootfs?
> 
> Sure!
> 
> How do you generate ext4 images? You use genext2fs and then some other
> commands to enable ext4-specific features? Is there another utility?

 I currently use genext2fs, followed by  tune2fs to add the journal and 
e2fsck to fix the incorrect FS version  number.  But it's extremely 
inefficient, especially since genext2fs first builds the filesystem in 
memory before committing to the output image.  Not good when you want to
create a 500GB partition :-)

 Regards,
 Arnout

-- 
Arnout Vandecappelle                               arnout at mind be
Senior Embedded Software Architect                 +32-16-286540
Essensium/Mind                                     http://www.mind.be
G.Geenslaan 9, 3001 Leuven, Belgium                BE 872 984 063 RPR Leuven
LinkedIn profile: http://www.linkedin.com/in/arnoutvandecappelle
GPG fingerprint:  7CB5 E4CC 6C2E EFD4 6E3D A754 F963 ECAB 2450 2F1F

^ permalink raw reply	[flat|nested] 6+ messages in thread
* [Buildroot] Ext4 rootfs option
  2012-02-08 22:10   ` Arnout Vandecappelle
@ 2012-02-08 22:15     ` Peter Korsgaard
  2012-02-09 14:02       ` Michael S. Zick
  2012-02-09 22:36       ` Arnout Vandecappelle
  0 siblings, 2 replies; 6+ messages in thread
From: Peter Korsgaard @ 2012-02-08 22:15 UTC (permalink / raw)
  To: buildroot

>>>>> "Arnout" == Arnout Vandecappelle <arnout@mind.be> writes:

Hi,

 Arnout>  I currently use genext2fs, followed by tune2fs to add the
 Arnout> journal and e2fsck to fix the incorrect FS version number.  But
 Arnout> it's extremely inefficient, especially since genext2fs first
 Arnout> builds the filesystem in memory before committing to the output
 Arnout> image.  Not good when you want to create a 500GB partition :-)

Wow, you're using Buildroot for systems with 500GB rootfs? Must be those
binary video codecs / GPU drivers you were talking about ;)

-- 
Bye, Peter Korsgaard

^ permalink raw reply	[flat|nested] 6+ messages in thread
* [Buildroot] Ext4 rootfs option
  2012-02-08 22:15     ` Peter Korsgaard
@ 2012-02-09 14:02       ` Michael S. Zick
  2012-02-09 22:36       ` Arnout Vandecappelle
  1 sibling, 0 replies; 6+ messages in thread
From: Michael S. Zick @ 2012-02-09 14:02 UTC (permalink / raw)
  To: buildroot

On Wed February 8 2012, Peter Korsgaard wrote:
> >>>>> "Arnout" == Arnout Vandecappelle <arnout@mind.be> writes:
> 
> Hi,
> 
>  Arnout>  I currently use genext2fs, followed by tune2fs to add the
>  Arnout> journal and e2fsck to fix the incorrect FS version number.  But
>  Arnout> it's extremely inefficient, especially since genext2fs first
>  Arnout> builds the filesystem in memory before committing to the output
>  Arnout> image.  Not good when you want to create a 500GB partition :-)
> 
> Wow, you're using Buildroot for systems with 500GB rootfs? Must be those
> binary video codecs / GPU drivers you were talking about ;)
> 

Naw, this is the embedded inventory system for the home refrigerator.
Leaves room for a bit of meal variety week-to-week. ;)

Mike

^ permalink raw reply	[flat|nested] 6+ messages in thread
* [Buildroot] Ext4 rootfs option
  2012-02-08 22:15     ` Peter Korsgaard
  2012-02-09 14:02       ` Michael S. Zick
@ 2012-02-09 22:36       ` Arnout Vandecappelle
  1 sibling, 0 replies; 6+ messages in thread
From: Arnout Vandecappelle @ 2012-02-09 22:36 UTC (permalink / raw)
  To: buildroot

On Wednesday 08 February 2012 23:15:07 Peter Korsgaard wrote:
> >>>>> "Arnout" == Arnout Vandecappelle <arnout@mind.be> writes:
> 
> Hi,
> 
>  Arnout>  I currently use genext2fs, followed by tune2fs to add the
>  Arnout> journal and e2fsck to fix the incorrect FS version number.  But
>  Arnout> it's extremely inefficient, especially since genext2fs first
>  Arnout> builds the filesystem in memory before committing to the output
>  Arnout> image.  Not good when you want to create a 500GB partition :-)
> 
> Wow, you're using Buildroot for systems with 500GB rootfs? Must be those
> binary video codecs / GPU drivers you were talking about ;)

 Actually, no.  I wrote the script so it was possible to write the image to
a block device, and it would determine the required fs size automatically.  
And then some idiot had the idea of plugging in a USB harddisk instead of 
the normal 1GB compactflash card...  Serves me right for trying to be too
generic.

 Regards,
 Arnout

-- 
Arnout Vandecappelle                               arnout at mind be
Senior Embedded Software Architect                 +32-16-286540
Essensium/Mind                                     http://www.mind.be
G.Geenslaan 9, 3001 Leuven, Belgium                BE 872 984 063 RPR Leuven
LinkedIn profile: http://www.linkedin.com/in/arnoutvandecappelle
GPG fingerprint:  7CB5 E4CC 6C2E EFD4 6E3D A754 F963 ECAB 2450 2F1F

^ permalink raw reply	[flat|nested] 6+ messages in thread
end of thread, other threads:[~2012-02-09 22:36 UTC | newest]

Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2012-02-08  7:14 [Buildroot] Ext4 rootfs option Mark Constable
2012-02-08 21:24 ` Thomas Petazzoni
2012-02-08 22:10   ` Arnout Vandecappelle
2012-02-08 22:15     ` Peter Korsgaard
2012-02-09 14:02       ` Michael S. Zick
2012-02-09 22:36       ` Arnout Vandecappelle

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