[Live-demo] Build Process - Filesystems

[Micha Silver]

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.
-- 
Micha 



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