[yocto] Mounting USB drives on a "read-only-rootfs" based system

Mike Looijmans mike.looijmans at topic.nl
Tue Jun 14 06:18:22 PDT 2016


Yup, even mdev based images do that with current OE.

I'd expect "/media" to symlink to "run/media" on most devices (regardless 
whether the rootfs is read-only or not). Check if that's the case on your system.

On 14-06-16 00:01, Christopher Larson wrote:
> Afaik usb storage is already automounted by udev on /run/media/, so there's no
> need to use /media for that purpose.
>
> On Mon, Jun 13, 2016 at 2:22 PM, Jeffrey D Boyer <Jeffrey.D.Boyer at jci.com
> <mailto:Jeffrey.D.Boyer at jci.com>> wrote:
>
>     Hello,____
>
>     __ __
>
>     New to the list here, so I’m sorry if this question has been asked before,
>     but I couldn’t find a direct answer to it. ____
>
>     __ __
>
>     I have a yocto image that was built using the following bb script line:
>     IMAGE_FEATURES += " read-only-rootfs". ____
>
>     __ __
>
>     As this image eventually resides on a static flash device, it must be
>     read-only.  However, the system hardware supports removable media (SD card
>     and USB drives), and I’d like to be able to mount and write to those
>     removable drives / partitions for data logging purposes.  What needs to be
>     done in order to make the /media directory auto-mountable when a
>     “read-only” image is specified by the build script?____
>
>     __ __
>
>     Thanks.____
>
>     __ __
>
>
>     --
>     

Kind regards,

Mike Looijmans
System Expert

TOPIC Embedded Products
Eindhovenseweg 32-C, NL-5683 KH Best
Postbus 440, NL-5680 AK Best
Telefoon: +31 (0) 499 33 69 79
E-mail: mike.looijmans at topicproducts.com
Website: www.topicproducts.com

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> Christopher Larson
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> Founder - BitBake, OpenEmbedded, OpenZaurus
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