ubi cloning
Hi i need to clone a nand flash. which has ubifs on it doing 'dd' didn't work as the source and dest have different bad sectors. is there an easy way to clone a ubifs nand-flash ? thanks erez. ___ Linux-il mailing list Linux-il@cs.huji.ac.il http://mailman.cs.huji.ac.il/mailman/listinfo/linux-il
Re: ubi cloning
How about ddrescue (the GNU one I think, there are multiple implementations with same name) into an image file then try to fix the fs around the bad sectors? On 12 May 2014 18:46, Erez D erez0...@gmail.com wrote: Hi i need to clone a nand flash. which has ubifs on it doing 'dd' didn't work as the source and dest have different bad sectors. is there an easy way to clone a ubifs nand-flash ? thanks erez. ___ Linux-il mailing list Linux-il@cs.huji.ac.il http://mailman.cs.huji.ac.il/mailman/listinfo/linux-il -- [image: View my profile on LinkedIn] http://www.linkedin.com/in/gliderflyer ___ Linux-il mailing list Linux-il@cs.huji.ac.il http://mailman.cs.huji.ac.il/mailman/listinfo/linux-il
Re: ubi cloning
On Mon, May 12, 2014 at 11:51 AM, Amos Shapira amos.shap...@gmail.comwrote: How about ddrescue (the GNU one I think, there are multiple implementations with same name) into an image file then try to fix the fs around the bad sectors? ubifs already handles the bad sectors, and i do not want to mess with it. On 12 May 2014 18:46, Erez D erez0...@gmail.com wrote: Hi i need to clone a nand flash. which has ubifs on it doing 'dd' didn't work as the source and dest have different bad sectors. is there an easy way to clone a ubifs nand-flash ? thanks erez. ___ Linux-il mailing list Linux-il@cs.huji.ac.il http://mailman.cs.huji.ac.il/mailman/listinfo/linux-il -- [image: View my profile on LinkedIn] http://www.linkedin.com/in/gliderflyer ___ Linux-il mailing list Linux-il@cs.huji.ac.il http://mailman.cs.huji.ac.il/mailman/listinfo/linux-il
Re: ubi cloning
Hi Erez,
On Mon, May 12, 2014 at 11:46:43AM +0300, Erez D wrote:
i need to clone a nand flash. which has ubifs on it
doing 'dd' didn't work as the source and dest have different bad sectors.
dd is not the way to go with raw NAND flash access; it's not aware of bad
blocks.
is there an easy way to clone a ubifs nand-flash ?
You may be able get a working system using nanddump/nandwrite (see
http://thread.gmane.org/gmane.linux.drivers.mtd/45792/focus=46024, but read
the whole thread). Generally, tough, this is not what you want to do with
UBI/UBIFS. You should use ubiformat on the target, and copy the content with
tar. See http://www.linux-mtd.infradead.org/faq/ubifs.html#L_why_ubiformat.
baruch
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Re: ubi cloning
On Mon, May 12, 2014 at 12:05 PM, Baruch Siach bar...@tkos.co.il wrote:
Hi Erez,
On Mon, May 12, 2014 at 11:46:43AM +0300, Erez D wrote:
i need to clone a nand flash. which has ubifs on it
doing 'dd' didn't work as the source and dest have different bad sectors.
dd is not the way to go with raw NAND flash access; it's not aware of bad
blocks.
is there an easy way to clone a ubifs nand-flash ?
You may be able get a working system using nanddump/nandwrite (see
http://thread.gmane.org/gmane.linux.drivers.mtd/45792/focus=46024, but
read
the whole thread). Generally, tough, this is not what you want to do with
UBI/UBIFS. You should use ubiformat on the target, and copy the content
with
tar. See http://www.linux-mtd.infradead.org/faq/ubifs.html#L_why_ubiformat
.
will tar preserve uid/gid hard links, special files, /dev extended attr etc
?
baruch
--
http://baruch.siach.name/blog/ ~. .~ Tk Open
Systems
=}ooO--U--Ooo{=
- bar...@tkos.co.il - tel: +972.2.679.5364, http://www.tkos.co.il -
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Re: ubi cloning
Hi Erez,
On Mon, May 12, 2014 at 12:14:14PM +0300, Erez D wrote:
On Mon, May 12, 2014 at 12:05 PM, Baruch Siach bar...@tkos.co.il wrote:
On Mon, May 12, 2014 at 11:46:43AM +0300, Erez D wrote:
i need to clone a nand flash. which has ubifs on it
doing 'dd' didn't work as the source and dest have different bad sectors.
dd is not the way to go with raw NAND flash access; it's not aware of bad
blocks.
is there an easy way to clone a ubifs nand-flash ?
You may be able get a working system using nanddump/nandwrite (see
http://thread.gmane.org/gmane.linux.drivers.mtd/45792/focus=46024, but
read
the whole thread). Generally, tough, this is not what you want to do with
UBI/UBIFS. You should use ubiformat on the target, and copy the content
with
tar. See http://www.linux-mtd.infradead.org/faq/ubifs.html#L_why_ubiformat
will tar preserve uid/gid hard links, special files, /dev
Yes, by default.
extended attr etc ?
Yes. Use --xattrs.
baruch
--
http://baruch.siach.name/blog/ ~. .~ Tk Open Systems
=}ooO--U--Ooo{=
- bar...@tkos.co.il - tel: +972.2.679.5364, http://www.tkos.co.il -
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Re: ubi cloning
On Mon, May 12, 2014 at 12:28 PM, Baruch Siach bar...@tkos.co.il wrote:
Hi Erez,
On Mon, May 12, 2014 at 12:14:14PM +0300, Erez D wrote:
On Mon, May 12, 2014 at 12:05 PM, Baruch Siach bar...@tkos.co.il
wrote:
On Mon, May 12, 2014 at 11:46:43AM +0300, Erez D wrote:
i need to clone a nand flash. which has ubifs on it
doing 'dd' didn't work as the source and dest have different bad
sectors.
dd is not the way to go with raw NAND flash access; it's not aware of
bad
blocks.
is there an easy way to clone a ubifs nand-flash ?
You may be able get a working system using nanddump/nandwrite (see
http://thread.gmane.org/gmane.linux.drivers.mtd/45792/focus=46024, but
read
the whole thread). Generally, tough, this is not what you want to do
with
UBI/UBIFS. You should use ubiformat on the target, and copy the content
with
tar. See
http://www.linux-mtd.infradead.org/faq/ubifs.html#L_why_ubiformat
will tar preserve uid/gid hard links, special files, /dev
Yes, by default.
extended attr etc ?
Yes. Use --xattrs.
baruch
thanks, i'll try that.
can I ubiformat + untar from u-boot ?
--
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Systems
=}ooO--U--Ooo{=
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Re: ubi cloning
Hi Erez,
On Mon, May 12, 2014 at 02:14:34PM +0300, Erez D wrote:
On Mon, May 12, 2014 at 12:28 PM, Baruch Siach bar...@tkos.co.il wrote:
On Mon, May 12, 2014 at 12:14:14PM +0300, Erez D wrote:
On Mon, May 12, 2014 at 12:05 PM, Baruch Siach bar...@tkos.co.il
wrote:
On Mon, May 12, 2014 at 11:46:43AM +0300, Erez D wrote:
i need to clone a nand flash. which has ubifs on it
doing 'dd' didn't work as the source and dest have different bad
sectors.
dd is not the way to go with raw NAND flash access; it's not aware of
bad
blocks.
is there an easy way to clone a ubifs nand-flash ?
You may be able get a working system using nanddump/nandwrite (see
http://thread.gmane.org/gmane.linux.drivers.mtd/45792/focus=46024, but
read
the whole thread). Generally, tough, this is not what you want to do
with
UBI/UBIFS. You should use ubiformat on the target, and copy the content
with
tar. See
http://www.linux-mtd.infradead.org/faq/ubifs.html#L_why_ubiformat
will tar preserve uid/gid hard links, special files, /dev
Yes, by default.
extended attr etc ?
Yes. Use --xattrs.
baruch
thanks, i'll try that.
can I ubiformat + untar from u-boot ?
I don't see support for either in mainline U-Boot. Barebox supports ubiformat
but not tar extraction.
Your best option is to boot into RAM using a kernel combined with a minimal
Busybox based initramfs, and extract you tar from there. Note tough that
Busybox tar does not support extended attributes, so you must use GNU tar for
this. Buildroot can generate a minimal initramfs image for you quite easily.
baruch
--
http://baruch.siach.name/blog/ ~. .~ Tk Open Systems
=}ooO--U--Ooo{=
- bar...@tkos.co.il - tel: +972.2.679.5364, http://www.tkos.co.il -
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Re: ubi cloning
thanks for your help
On Mon, May 12, 2014 at 2:53 PM, Baruch Siach bar...@tkos.co.il wrote:
Hi Erez,
On Mon, May 12, 2014 at 02:14:34PM +0300, Erez D wrote:
On Mon, May 12, 2014 at 12:28 PM, Baruch Siach bar...@tkos.co.il
wrote:
On Mon, May 12, 2014 at 12:14:14PM +0300, Erez D wrote:
On Mon, May 12, 2014 at 12:05 PM, Baruch Siach bar...@tkos.co.il
wrote:
On Mon, May 12, 2014 at 11:46:43AM +0300, Erez D wrote:
i need to clone a nand flash. which has ubifs on it
doing 'dd' didn't work as the source and dest have different bad
sectors.
dd is not the way to go with raw NAND flash access; it's not aware
of
bad
blocks.
is there an easy way to clone a ubifs nand-flash ?
You may be able get a working system using nanddump/nandwrite (see
http://thread.gmane.org/gmane.linux.drivers.mtd/45792/focus=46024,
but
read
the whole thread). Generally, tough, this is not what you want to
do
with
UBI/UBIFS. You should use ubiformat on the target, and copy the
content
with
tar. See
http://www.linux-mtd.infradead.org/faq/ubifs.html#L_why_ubiformat
will tar preserve uid/gid hard links, special files, /dev
Yes, by default.
extended attr etc ?
Yes. Use --xattrs.
baruch
thanks, i'll try that.
can I ubiformat + untar from u-boot ?
I don't see support for either in mainline U-Boot. Barebox supports
ubiformat
but not tar extraction.
Your best option is to boot into RAM using a kernel combined with a minimal
Busybox based initramfs, and extract you tar from there. Note tough that
Busybox tar does not support extended attributes, so you must use GNU tar
for
this. Buildroot can generate a minimal initramfs image for you quite
easily.
baruch
--
http://baruch.siach.name/blog/ ~. .~ Tk Open
Systems
=}ooO--U--Ooo{=
- bar...@tkos.co.il - tel: +972.2.679.5364, http://www.tkos.co.il -
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