UBIFS option to make volume not do compression

UBIFS option to make volume not do compression

[Philip Rakity]

I would like the option to create an empty UBIFS file system that has compression disabled.   I know I can do this via mkfs.ubifs, ubinit, etc ... but this is not helpful when just creating a empty file system for testing.

this option would be equivalent to the -x none option.

Philip



      

Re: UBIFS option to make volume not do compression

[Artem Bityutskiy]

On Thu, 2008-12-18 at 20:56 -0800, Philip Rakity wrote:
> I would like the option to create an empty UBIFS file system that has compression disabled.   I know I can do this via mkfs.ubifs, ubinit, etc ... but this is not helpful when just creating a empty file system for testing.
> 
> this option would be equivalent to the -x none option.

>From Documentation/filesystems/ubifs.txt:

compr=none              override defoult comressor and set it to "none"
compr=lzo               override defoult comressor and set it to "lzo"
compr=zlib              override defoult comressor and set it to "zlib"

Just make sure you use up-to-date UBIFS, because this was added
recently. And I guess this should also be mentioned somewhere on the web
site.

-- 
Best regards,
Artem Bityutskiy (Битюцкий Артём)

Re: UBIFS option to make volume not do compression

[Philip Rakity]

>From Documentation/filesystems/ubifs.txt:

>compr=none              override defoult comressor and set it to "none"
>compr=lzo               override defoult comressor and set it to "lzo"
>compr=zlib              override defoult comressor and set it to "zlib"

>Just make sure you use up-to-date UBIFS, because this was added
>recently. And I guess this should also be mentioned somewhere on the web
>site.

Source browsed the mtd git on the mtd website.  No references to the above in
the documentation.  Did I look at wrong git ?

An FAQ edit would be nice.

Philip



      

Re: UBIFS option to make volume not do compression

[Artem Bityutskiy]

On Sun, 2008-12-21 at 10:47 -0800, Philip Rakity wrote:
> >From Documentation/filesystems/ubifs.txt:
> 
> >compr=none              override defoult comressor and set it to "none"
> >compr=lzo               override defoult comressor and set it to "lzo"
> >compr=zlib              override defoult comressor and set it to "zlib"
> 
> >Just make sure you use up-to-date UBIFS, because this was added
> >recently. And I guess this should also be mentioned somewhere on the web
> >site.
> 
> Source browsed the mtd git on the mtd website.  No references to the above in
> the documentation.  Did I look at wrong git ?
> 
> An FAQ edit would be nice.

You may find the up-to-date ubifs.txt in the ubifs-2.6.git
(see http://www.linux-mtd.infradead.org/doc/ubifs.html#L_source) or
in the current Linus's tree.

-- 
Best regards,
Artem Bityutskiy (Битюцкий Артём)

Re: UBIFS option to make volume not do compression

[Geert Uytterhoeven]

On Mon, 22 Dec 2008, Artem Bityutskiy wrote:
> On Sun, 2008-12-21 at 10:47 -0800, Philip Rakity wrote:
> > >From Documentation/filesystems/ubifs.txt:
> > 
> > >compr=none              override defoult comressor and set it to "none"
                                         ^       ^
				      default compressor

> > >compr=lzo               override defoult comressor and set it to "lzo"
> > >compr=zlib              override defoult comressor and set it to "zlib"
> > 
> > >Just make sure you use up-to-date UBIFS, because this was added
> > >recently. And I guess this should also be mentioned somewhere on the web
> > >site.
> > 
> > Source browsed the mtd git on the mtd website.  No references to the above in
> > the documentation.  Did I look at wrong git ?
> > 
> > An FAQ edit would be nice.
> 
> You may find the up-to-date ubifs.txt in the ubifs-2.6.git
> (see http://www.linux-mtd.infradead.org/doc/ubifs.html#L_source) or
> in the current Linus's tree.

It's not in Linus' current tree.

With kind regards,

Geert Uytterhoeven
Software Architect

Sony Techsoft Centre Europe
The Corporate Village · Da Vincilaan 7-D1 · B-1935 Zaventem · Belgium

Phone:    +32 (0)2 700 8453
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E-mail:   Geert.Uytterhoeven@sonycom.com
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Re: UBIFS option to make volume not do compression

[Artem Bityutskiy]

On Mon, 2008-12-22 at 10:14 +0100, Geert Uytterhoeven wrote:
> > You may find the up-to-date ubifs.txt in the ubifs-2.6.git
> > (see http://www.linux-mtd.infradead.org/doc/ubifs.html#L_source) or
> > in the current Linus's tree.
> 
> It's not in Linus' current tree.

Indeed. It is scheduled for the next merge window. This is the commit I
referred to:

http://git.infradead.org/ubifs-2.6.git?a=commit;h=553dea4dd531562688ba01c641c7f8fc7abaaf8c

-- 
Best regards,
Artem Bityutskiy (Битюцкий Артём)