[yocto] rootfs mounted read-only on Live USB (x86-64)

[Dan O'Donovan]

Hi all

Has anyone else noticed that the root file-system appears to be mounted read-only when booting a Live USB image from Yocto 2.1.

This is on a sato build from the krogoth branch of poky and meta-intel, for a generic x86-64 machine (4.4 kernel).

I'm transferring the resulting .iso image to a usb stick using 'dd', and then picking the 'boot' option at startup.

As well as a bunch of errors about the read-only filesystem (e.g. failing to create files in /var and other locations), the desktop UI fails to load.

This worked fine with Yocto 2.0.

I have a hunch that it might be caused by a lack of aufs support.  Is it possible that aufs patches were omitted from the x86 kernels in Yocto 2.1?

Thanks,
-Dan

P.S. It works fine if I just install it directly, or if I use the .hddimg, instead of trying to boot the live image from the .iso.