[Live-demo] Build Process - Filesystems

[Angelos Tzotsos]

On 01/03/2013 02:31 PM, Micha Silver wrote:
> Angelos Tzotsos wrote
>> On 12/21/2012 12:17 PM, Patric Hafner | geOps wrote:
>>> Dear Members of the OSGeo mailing list,
>>>
>>> in last days, I run the build process as described here [1] several
>>> times to test our install script. Unfortunately the building always
>>> failed due to problem with unmouting of dev and proc-filesystem for
>>> chroot.  After some small changes, I was able to fix this issue.
>>> Do someone else also experienced those problems?
>>>
>>> For me it is not obvious why it is necessary to bind the whole /dev into
>>> the chroot - /dev/pts should do it. Secondly, it seems more safe to me,
>>> to execute the mount of /proc outside the chroot.
>>> After performing the following changes, building runs always fine in my
>>> environment.
>>>
>>> *build_chroot_debug.sh*
>>>
>>> -- sudo mount --bind /dev/ edit/dev
>>> ++ sudo mount -t proc -o bind /proc edit/proc
>>> ++ sudo mount -o bind /dev/pts edit/dev/pts
>>> ...
>>> -- sudo umount edit/dev
>>> ++ sudo umount edit/dev/pts
>>> ++ sudo umount edit/proc
>>>
>>> *inchroot_debug.sh*
>>>
>>> --mount -t proc none /proc
>>> --mount -t sysfs none /sys
>>> --mount -t devpts none /dev/pts
>>> ...
>>> -- umount /proc || umount -lf /proc
>>> -- umount /sys
>>> -- umount /dev/pts
>>>
>>> Any comments or ideas ?
>>>
>>>
>>> [1]
>>> http://wiki.osgeo.org/wiki/Live_GIS_Build#How_to_do_development_.2F_debugging_with_the_current_build_method
>>>
>> Hi Patric,
>>
>> Thanks for your patch, I will test it too.
>> The previous instructions came directly from the official Ubuntu wiki,
>> so we did not touch them, and it worked ok (we simply had to reboot the
>> build VM after a successful build process).
>>
>> Best,
>> Angelos
>>
>> -- 
>> Angelos Tzotsos
>> Remote Sensing Laboratory
>> National Technical University of Athens
>> http://users.ntua.gr/tzotsos
>>
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>
> I can verify that Patric's suggestion works. Successfully creates a build,
> and also leaves the VM in a usable state.
Hi Patric and Micha,

Unfortunately this fix did not work on a full build as can be seen here:
http://aiolos.survey.ntua.gr/gisvm/dev/osgeo-live-debug-build9529-log.tar.gz

For some reason squashfs fails to read the installed files.
Please check my commit
http://trac.osgeo.org/osgeo/changeset/9529
in case I missed something.

Best,
Angelos

-- 
Angelos Tzotsos
Remote Sensing Laboratory
National Technical University of Athens
http://users.ntua.gr/tzotsos