Bug 1780

Summary: multi partition images (split images)
Product: [Build System, Metadata & Runtime] Hob Reporter: Frans Meulenbroeks <fransmeulenbroeks>
Component: hobAssignee: Jessica <jessica.zhang>
Status: RESOLVED WONTFIX QA Contact:
Severity: enhancement    
Priority: Low CC: cristiana.voicu, jessica.zhang, jiajun.xu, poky.bs.watcher, poky.watcher, richard.purdie
Version: unspecified   
Target Milestone: Future   
Hardware: x86   
OS: Multiple   
Whiteboard:
OS type for building Yocto: --- Type of Regression: ---
Verified: Documentation change: No (bug/feature does not impact docs)

Description Frans Meulenbroeks 2011-11-22 02:27:05 UTC 
It would be nice if there was a possibility to split an image into two (or more parts) to be stored into two different partitions.

The user then could boot from the first partition (which contains the basic stuff) then mount a 2nd partition (say to /opt) and also get access to the packages installed into the 2nd partition.

System builders could use this to e.g. have their core functionality in onboard flash, and the rest on an SD card. Alternately one could split the image into two parts allowing faster booting (a smaller root partition means less time to check and mount).
And finally system builders could easily make a 2nd (initially hidden) partition with debug tools that are not needed/visible/available for regular users.

Of course in order to use the stuff in /opt one would need to extend PATH and LD_LIBRARY_PATH (and perhaps e.g. config files for the 2nd partition still need to go to /etc)
Comment 1 Joshua Lock - Disabled 2011-12-13 09:58:38 UTC 
Feature request for Hob assigned to Shane for analysis, etc.
Comment 2 Cristiana Voicu 2013-04-15 08:57:08 UTC 
Hi Jessica,

I have assigned this bug to you, in order to decide that this should or not to implement in Hob. If not, I think the status should be changed to won't fix.
An initial technical analysis suggests that this functionality is not strictly related to Hob and should be related to lower layers (how images are produced and/or designed).
Thanks,
Cristiana
Comment 3 Jessica 2013-08-12 17:27:45 UTC 
This capability won't be implemented via hob