Ubifs

Ubifs

[Жека]

Hi all,
I wanna have a try ubifs on nand, and do as written on
http://www.linux-mtd.infradead.org/faq/ubifs.html
1. compile, install and boot the kernel (2.6.26-rc3)
the configuration option for ubi and nand is default on as module.
2. make the mtd-utils.
3. create a ubi when I got the error

# ubiattach /dev/ubi_ctrl -m 0
UBI device number 0, total 2048 LEBs (31457280 bytes, 30.0 MiB), available
2024
LEBs (31088640 bytes, 29.6 MiB), LEB size 15360 bytes (15.0 KiB)
# ubinfo
UBI version:                    1
Count of UBI devices:           1
UBI control device major/minor: 10:63
Present UBI devices:            ubi0
# ubimkvol /dev/ubi0 -N test -s 30MiB
ubimkvol: error!: "/dev/ubi0" is not an UBI device node

I did miss any step installation mtd-tools or create UBI device...

Thanks!!!

 best regards, Evgeny

Re: Ubifs

[Artem Bityutskiy]

On Wed, 2008-12-10 at 11:02 +0200, Жека wrote:
> Hi all,
> I wanna have a try ubifs on nand, and do as written on
> http://www.linux-mtd.infradead.org/faq/ubifs.html
> 1. compile, install and boot the kernel (2.6.26-rc3)
> the configuration option for ubi and nand is default on as module.
> 2. make the mtd-utils.
> 3. create a ubi when I got the error
> 
> # ubiattach /dev/ubi_ctrl -m 0
> UBI device number 0, total 2048 LEBs (31457280 bytes, 30.0 MiB), available
> 2024
> LEBs (31088640 bytes, 29.6 MiB), LEB size 15360 bytes (15.0 KiB)
> # ubinfo
> UBI version:                    1
> Count of UBI devices:           1
> UBI control device major/minor: 10:63
> Present UBI devices:            ubi0
> # ubimkvol /dev/ubi0 -N test -s 30MiB
> ubimkvol: error!: "/dev/ubi0" is not an UBI device node

Hi, please check this:

cat /sys/class/ubi/ubi0_0/dev
and
ls -l /dev/ubi0_0
Major/minor should match. E.g., on my system I have:

[dedekind@gollum /]$ cat /sys/class/ubi/ubi0_0/dev
252:1
[dedekind@gollum /]$ ls -l /dev/ubi0_0
crw-rw---- 1 root root 252, 1 2008-12-08 17:11 /dev/ubi0_0

-- 
Best regards,
Artem Bityutskiy (Битюцкий Артём)

Ubifs

[Жека]

Hi Artem!!! 
On my system after create UBI device /dev/ubi0_0 it was not created...
I did check... here is a result

# cat /sys/class/ubi/ubi0/dev
253:0
# ls -l /dev/ubi0
brw-rw----    1 root     root     253,   0 Jan  1 00:11 /dev/ubi0 


best regards, Evgeny

Re: Ubifs

[Artem Bityutskiy]

Hi,

On Wed, 2008-12-10 at 13:44 +0200, Жека wrote:
> Hi Artem!!! 
> On my system after create UBI device /dev/ubi0_0 it was not created...


Err, sorry, I confused you because in my reply I used UBI _volume_
nodes, not UBI device nodes.

/dev/ubiX are UBI device nodes.
/dev/ubiX_Y are UBI volume nodes - volume Y on device X.

So I think when you successfully create the volume, you'll get the
volume device.

But you got it right, judging from your response.

> I did check... here is a result
> 
> # cat /sys/class/ubi/ubi0/dev
> 253:0
> # ls -l /dev/ubi0
> brw-rw----    1 root     root     253,   0 Jan  1 00:11 /dev/ubi0 

It should be character device, not block device, i.e. use

mknod /dev/ubi0 c 253 0

-- 
Best regards,
Artem Bityutskiy (Битюцкий Артём)

Re: Ubifs

[Artem Bityutskiy]

On Wed, 2008-12-10 at 13:44 +0200, Жека wrote:
> Hi Artem!!! 
> On my system after create UBI device /dev/ubi0_0 it was not created...
> I did check... here is a result
> 
> # cat /sys/class/ubi/ubi0/dev
> 253:0
> # ls -l /dev/ubi0
> brw-rw----    1 root     root     253,   0 Jan  1 00:11 /dev/ubi0 

Just pushed a fix which makes ubi utilities to be more verbose about
errors.

-- 
Best regards,
Artem Bityutskiy (Битюцкий Артём)

Ubifs

[Жека]

thank you for a prompt, a problem is decided!!!

# mknod /dev/ubi0 c 253 0
# ubiattach /dev/ubi_ctrl -m 0
UBI device number 0, total 2048 LEBs (31457280 bytes, 30.0 MiB), available
2024
LEBs (31088640 bytes, 29.6 MiB), LEB size 15360 bytes (15.0 KiB)
# ubimkvol /dev/ubi0 -N test -s 29MiB
nand_wp: C0 ST 80
nand_wp: C0 ST 80
nand_wp: C0 ST 80
nand_wp: C0 ST 80
nand_wp: C0 ST 80
nand_wp: C0 ST 80
nand_wp: C0 ST 80
nand_wp: C0 ST 80
Volume ID 0, size 1980 LEBs (30412800 bytes, 29.0 MiB), LEB size 15360 bytes
(15.0 KiB), dynamic, name "test", alignment 1

best regards, Evgeny

ubifs

[Renaud Barbier]

I see that there is no ubifs support in barebox.

Is there any plan to support ubifs in the near future?

Else how much effort do you think it will take to port it

I never ported a fs so if you have any advices, I will
be glad to read them.

Cheers.


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Re: ubifs

[Sascha Hauer]

On Wed, Sep 28, 2011 at 04:27:31PM +0100, Renaud Barbier wrote:
> I see that there is no ubifs support in barebox.
> 
> Is there any plan to support ubifs in the near future?

No, not that I heard of.

> 
> Else how much effort do you think it will take to port it
> 
> I never ported a fs so if you have any advices, I will
> be glad to read them.

Probably the U-Boot ubifs code is a useful template for
porting ubifs to barebox. It shouldn't be too hard to get
something working by looking at the current filesystems
in barebox.

Sascha

-- 
Pengutronix e.K.                           |                             |
Industrial Linux Solutions                 | http://www.pengutronix.de/  |
Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0    |
Amtsgericht Hildesheim, HRA 2686           | Fax:   +49-5121-206917-5555 |

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ubifs

[Aidan Totterdell]

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Hi,

I am very interested in using dm-verity in an up coming embedded project on
a "secure" device using NAND flash. I see an email in the June archives
asking the question about what file systems can  dm-verity be used with.
The response was "any file system". The question mentioned ubifs
specifically which is not a block based file system. Can ubifs be made to
look like a block device? Is there an example of dm-verity on a ubifs file
system?

I think it would be possible to create a jffs2 file system over ubi using
"gluebi" module. This would then appear as a block device but it would be
great if it would work with ubifs/ubi as is.

Any help would be much appreciated.

Thanks,
Aidan

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ubifs

[Erwin Rol]

Hallo all,

I want to create empty ubifs volumes, like this;

1) ubiformat -y -q /dev/nand0.system
2) ubiattach /dev/nand0.system
3) ubimkvol -t dynamic /dev/nand0.system.ubi system 0

4) .... ???? 

5) mount -t ubifs -o rw /dev/nand0.system.ubi.system /mnt/system/


Is this possible with barebox? 

- Erwin


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Re: ubifs

[Sascha Hauer]

Hi Erwin,

On Mon, Dec 03, 2018 at 01:42:11PM +0100, Erwin Rol wrote:
> Hallo all,
> 
> I want to create empty ubifs volumes, like this;
> 
> 1) ubiformat -y -q /dev/nand0.system
> 2) ubiattach /dev/nand0.system
> 3) ubimkvol -t dynamic /dev/nand0.system.ubi system 0
> 
> 4) .... ???? 
> 
> 5) mount -t ubifs -o rw /dev/nand0.system.ubi.system /mnt/system/
> 
> 
> Is this possible with barebox?

It depends on what you do in step 4. Should be something like
'ubiupdatevol' or cp /some/image /dev/nand0.system.ubi.system. But then,
yes, this works.

Sascha

-- 
Pengutronix e.K.                           |                             |
Industrial Linux Solutions                 | http://www.pengutronix.de/  |
Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0    |
Amtsgericht Hildesheim, HRA 2686           | Fax:   +49-5121-206917-5555 |

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Re: ubifs

[Erwin Rol]

On Mon, 2018-12-03 at 13:58 +0100, Sascha Hauer wrote:
> Hi Erwin,
> 
> On Mon, Dec 03, 2018 at 01:42:11PM +0100, Erwin Rol wrote:
> > Hallo all,
> > 
> > I want to create empty ubifs volumes, like this;
> > 
> > 1) ubiformat -y -q /dev/nand0.system
> > 2) ubiattach /dev/nand0.system
> > 3) ubimkvol -t dynamic /dev/nand0.system.ubi system 0
> > 
> > 4) .... ???? 
> > 
> > 5) mount -t ubifs -o rw /dev/nand0.system.ubi.system /mnt/system/
> > 
> > 
> > Is this possible with barebox?
> 
> It depends on what you do in step 4. Should be something like
> 'ubiupdatevol' or cp /some/image /dev/nand0.system.ubi.system. But then,
> yes, this works

But I need some sort of image, I can not create an empty ubifs volume
and mount it with just barebox tools ?

- Erwin


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Re: ubifs

[Sascha Hauer]

On Mon, Dec 03, 2018 at 02:06:21PM +0100, Erwin Rol wrote:
> On Mon, 2018-12-03 at 13:58 +0100, Sascha Hauer wrote:
> > Hi Erwin,
> > 
> > On Mon, Dec 03, 2018 at 01:42:11PM +0100, Erwin Rol wrote:
> > > Hallo all,
> > > 
> > > I want to create empty ubifs volumes, like this;
> > > 
> > > 1) ubiformat -y -q /dev/nand0.system
> > > 2) ubiattach /dev/nand0.system
> > > 3) ubimkvol -t dynamic /dev/nand0.system.ubi system 0
> > > 
> > > 4) .... ???? 
> > > 
> > > 5) mount -t ubifs -o rw /dev/nand0.system.ubi.system /mnt/system/
> > > 
> > > 
> > > Is this possible with barebox?
> > 
> > It depends on what you do in step 4. Should be something like
> > 'ubiupdatevol' or cp /some/image /dev/nand0.system.ubi.system. But then,
> > yes, this works
> 
> But I need some sort of image, I can not create an empty ubifs volume
> and mount it with just barebox tools ?

Nope, because we only have a readonly UBIFS implementation.

Sascha

-- 
Pengutronix e.K.                           |                             |
Industrial Linux Solutions                 | http://www.pengutronix.de/  |
Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0    |
Amtsgericht Hildesheim, HRA 2686           | Fax:   +49-5121-206917-5555 |

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Re: ubifs

[Erwin Rol]

On Mon, 2018-12-03 at 14:26 +0100, Sascha Hauer wrote:
> On Mon, Dec 03, 2018 at 02:06:21PM +0100, Erwin Rol wrote:
> > On Mon, 2018-12-03 at 13:58 +0100, Sascha Hauer wrote:
> > > Hi Erwin,
> > > 
> > > On Mon, Dec 03, 2018 at 01:42:11PM +0100, Erwin Rol wrote:
> > > > Hallo all,
> > > > 
> > > > I want to create empty ubifs volumes, like this;
> > > > 
> > > > 1) ubiformat -y -q /dev/nand0.system
> > > > 2) ubiattach /dev/nand0.system
> > > > 3) ubimkvol -t dynamic /dev/nand0.system.ubi system 0
> > > > 
> > > > 4) .... ???? 
> > > > 
> > > > 5) mount -t ubifs -o rw /dev/nand0.system.ubi.system /mnt/system/
> > > > 
> > > > 
> > > > Is this possible with barebox?
> > > 
> > > It depends on what you do in step 4. Should be something like
> > > 'ubiupdatevol' or cp /some/image /dev/nand0.system.ubi.system. But then,
> > > yes, this works
> > 
> > But I need some sort of image, I can not create an empty ubifs volume
> > and mount it with just barebox tools ?
> 
> Nope, because we only have a readonly UBIFS implementation.

So that means I can not add files to a ubifs ? That would seriously
suck :-(

- Erwin


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