[yocto] per-image ROOTFS sizes

[Robert P. J. Day]

On Wed, 12 Dec 2012, Trevor Woerner wrote:

> Hi Robert,
>
> (we met at OLS last summer, I came and chatted with you briefly after
> your presentation)
>
> On Wed, Dec 12, 2012 at 5:03 PM, Robert P. J. Day <rpjday at crashcourse.ca> wrote:
> >   now i'm interested, so ... what are your config steps?  i wouldn't
> > mind trying to reproduce this on my system.
>
>
> My doodle layer can be found here:
>     https://github.com/twoerner/meta-trevor
>
> My conf/bblayers.conf adds this and meta-openembedded/meta-oe.
> My conf/local.conf currently looks like:
>
>     BB_NUMBER_THREADS = "4"
>     PARALLEL_MAKE = "-j 4"
>     MACHINE = "qemux86"
>     DL_DIR = "/home/trevor/devel/Downloads"
>     DISTRO = "poky"
>     PACKAGE_CLASSES = "package_ipk"
>     EXTRA_IMAGE_FEATURES = "debug-tweaks ssh-server-openssh"
>     USER_CLASSES = "buildstats image-mklibs image-prelink"
>     PATCHRESOLVE = "noop"
>
>     #
>     # Disk Space Monitoring during the build
>     #
>     # Monitor the disk space during the build. If there is less that
> 1GB of space or less
>     # than 100K inodes in any key build location (TMPDIR, DL_DIR,
> SSTATE_DIR), gracefully
>     # shutdown the build. If there is less that 100MB or 1K inodes,
> perform a hard abort
>     # of the build. The reason for this is that running completely out
> of space can corrupt
>     # files and damages the build in ways which may not be easily recoverable.
>     BB_DISKMON_DIRS = "\
>         STOPTASKS,${TMPDIR},1G,100K \
>         STOPTASKS,${DL_DIR},1G,100K \
>         STOPTASKS,${SSTATE_DIR},1G,100K \
>         ABORT,${TMPDIR},100M,1K \
>         ABORT,${DL_DIR},100M,1K \
>         ABORT,${SSTATE_DIR},100M,1K"
>
>     CONF_VERSION = "1"
>     BB_DANGLINGAPPENDS_WARNONLY = "yes"
>     IMAGE_FSTYPES = "vmdk"
>     IMAGE_ROOTFS_SIZE = "500000"
>
> You can then either "bitbake bboverride" or "bitbake core-image-minimal".
>
> To easily boot the resulting VMDK with qemu, you'll have to patch your
> poky/scripts/runqemu and poky/scripts/runqemu-internal with my patch
> here (unless by the time you read this, it has already been included):
>     https://lists.yoctoproject.org/pipermail/yocto/2012-December/013279.html
>
> and then run:
>     $ runqemu tmp/deploy/images/<image>.vmdk
>
> Currently I can't think of any nice/easy way to _flexibly_ specify the
> eth0 IP address of the vmdk image, but the runqemu script does setup
> your local tap interface for 192.168.7.1/24 as expected. You can then
> manually configure eth0 once the VM boots and/or setup
> '/etc/network/interfaces'.

  i'll check all this out, either this eve or tomorrow.  probably
tomorrow since i'm well into a bottle of 10-YO single malt ardbeg at
the moment.  you're jealous.  i know you are.

rday

-- 

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Robert P. J. Day                                 Ottawa, Ontario, CANADA
                        http://crashcourse.ca

Twitter:                                       http://twitter.com/rpjday
LinkedIn:                               http://ca.linkedin.com/in/rpjday
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