Looking for an alternative to ubimirror

Looking for an alternative to ubimirror

[PJ]

Hi,

Can anyone please recommend a procedure to copy one UBI volume to another? 

I'd like to execute from the bash command line, if possible.

One upon a time I was able to use ubimirror, however that command appears to
have been removed from mtd-utils. 

- The source volume will be mounted R/O as it is the rootfs. 
- The destination volume will be unrestricted (unmounted).
- Both the source and destination volumes are in the same device.

I checked the FAQ, the archive, and Google but I came up empty, so thanks.

Paul

Re: Looking for an alternative to ubimirror

[Richard Weinberger]

On Fri, May 27, 2016 at 2:40 AM, PJ <paul.j2@rogers.com> wrote:
> Hi,
>
> Can anyone please recommend a procedure to copy one UBI volume to another?
>
> I'd like to execute from the bash command line, if possible.
>
> One upon a time I was able to use ubimirror, however that command appears to
> have been removed from mtd-utils.
>
> - The source volume will be mounted R/O as it is the rootfs.
> - The destination volume will be unrestricted (unmounted).
> - Both the source and destination volumes are in the same device.
>
> I checked the FAQ, the archive, and Google but I came up empty, so thanks.

This happened some time ago:
commit 94a20240f9d6776619d7652013bb10131ddad1fc
Author: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Date:   Tue Sep 28 10:47:06 2010 +0300

    ubi-utils: remove old ubi-utils

    The utilities are unmaintained for long time, and many of them
    do not even work, just compile, and no on complains about this.
    This suggests they are unused and we can now safely kill them.

    Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>


Artem? :-)

-- 
Thanks,
//richard

Re: Looking for an alternative to ubimirror

[Richard Weinberger]

On Fri, May 27, 2016 at 2:40 AM, PJ <paul.j2@rogers.com> wrote:
> Hi,
>
> Can anyone please recommend a procedure to copy one UBI volume to another?
>
> I'd like to execute from the bash command line, if possible.
>
> One upon a time I was able to use ubimirror, however that command appears to
> have been removed from mtd-utils.
>
> - The source volume will be mounted R/O as it is the rootfs.
> - The destination volume will be unrestricted (unmounted).
> - Both the source and destination volumes are in the same device.

Did you try dd if=/dev/ubiX_Y ... | ubiupdatevol ...?

-- 
Thanks,
//richard

RE: Looking for an alternative to ubimirror

[PJ]

Thanks Richard. It works for me.

An example for future reference. Copy /dev/ubi0_0 to /dev/ubi0_1:

The volume size (in bytes) is required when calling ubiupdatevol without an image file. It can be retrieved from ubinfo, something like this:
VOLSIZE=$(ubinfo /dev/ubi0_0 | grep -o '[0-9]\+ bytes' | grep -o '[0-9]\+')

In the ubiupdatevol a single dash ('-') is used in place of an image-file to trigger use of stdin.
dd if=/dev/ubi0_0 | ubiupdatevol /dev/ubi0_1 - -s ${VOLSIZE}

Paul

-----Original Message-----
From: Richard Weinberger [mailto:richard.weinberger@gmail.com] 
Sent: Friday, May 27, 2016 3:20 AM
To: PJ
Cc: linux-mtd@lists.infradead.org
Subject: Re: Looking for an alternative to ubimirror

On Fri, May 27, 2016 at 2:40 AM, PJ <paul.j2@rogers.com> wrote:
> Hi,
>
> Can anyone please recommend a procedure to copy one UBI volume to another?
>
> I'd like to execute from the bash command line, if possible.
>
> One upon a time I was able to use ubimirror, however that command 
> appears to have been removed from mtd-utils.
>
> - The source volume will be mounted R/O as it is the rootfs.
> - The destination volume will be unrestricted (unmounted).
> - Both the source and destination volumes are in the same device.

Did you try dd if=/dev/ubiX_Y ... | ubiupdatevol ...?

--
Thanks,
//richard