[yocto] devtmpfs failing to mount

Emily S easmith5555 at gmail.com
Mon Mar 11 13:28:28 PDT 2019


Yes those are both useful things to know. I am booting by flashing an SD
card with a wic image (made using sdimage-bootpart.wks), so the flashing
process takes care of creating the partitions. So the partition should be
of type EXT4. The mounting process is actually what I'm a little fuzzy on
in the first place. In October I had no issues with a mounting error for
devtmpfs, and I've made few changes since, however I can't seem to shake
this error, even when checking out older versions of the yocto
repositories. The mounting process should be mostly taken from the
meta-xilinx repository.


On Mon, Mar 11, 2019 at 3:16 PM Loïc Domaigné <tech at domaigne.com> wrote:

> Bonsoir Emily,
> > I'm using Yocto version rocko with a custom layer to run on the Zynq+ SoC
> > on a custom board. When trying to boot I'm getting the following error in
> > the boot output:
> > ...
> > [    4.127997] EXT4-fs (mmcblk0p2): couldn't mount as ext3 due to feature
> > incompatibilities
> > [    4.183737] EXT4-fs (mmcblk0p2): recovery complete
> > [    4.190840] EXT4-fs (mmcblk0p2): mounted filesystem with ordered data
> > mode. Opts: (null)
> > [    4.198870] VFS: Mounted root (ext4 filesystem) on device 179:2.
> > [    4.205861] devtmpfs: error mounting -2
> >
> > Are there common reasons for this happening I should check?
> Not sure if that helps, but I'd check:
> a) What's the type of the mmcblk0p2 (=rootfs?) partition?  and
> b) How is this partition mounted?
> Cheers!
> Loïc
> --
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