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Task #905

Updated by Aaron Marcuse-Kubitza over 10 years ago

_see #887, #902_ 

 h3. h3(. -alternate OS approach- 

 p(. p((. _tried, and problem also occurs on Mac, so using other approaches_ 

 # -fix @`make install`@, which sets up the entire BIEN installation and dependencies- 
 # -test the import on the local testing machine (a Mac), which already has most of the dependencies- 
 # -if that doesn't work, try the other approaches below- 

 h3. h3(. VM rollback approach 

 p(. p((. _best approach because in theory, restoring to a working backup should allow us to successfully run the import_ 

 # -restore vegbiendev to last working configuration- 
 # -get restored VM to work on VirtualBox- 
 ## -install bootloader- 
 ## -install device drivers- _the Linux VM configuration does not support the VirtualBox ethernet device natively, so it must be configured manually_ 
 # install database on VM 
 # test import and verify that it works 
 # perform system upgrades and see if import still works 
 ** if not, selectively install system upgrades to narrow down the problem 
 # update svn and see if import still works 
 ** if not, test different revisions to narrow down the problem 

 h3. h3(. -clean VM approach- 

 p(. p((. _not using this approach due to complexity of obtaining/installing dependencies in the versions they had for the last successful import_ 

 # -prepare clean VMs- 
 # -fix @`make install`@, which sets up the entire BIEN installation and dependencies- 
 ** normally, we do not reinstall the DB from scratch, so the bugs in @`make install`@ only become apparent when it is run on a partial installation 
 # install the database from scratch on a clean VM (VirtualBox) 
 ** this would involve adding any missing dependencies to our install scripts 
 # test the import in the clean VM with a sample datasource to see if that reproduces the problem 
 ** if it does, we know it's a bug in Postgres/Ubuntu and can troubleshoot using VM images with different Postgres/Ubuntu versions 
 ** if it doesn't, it's a problem specific to just the vegbiendev VM and we would reset the vegbiendev VM to a clean Ubuntu install and reinstall our dependencies 

 h3. h3(. Postgres rollback approach 

 p(. p((. _not using this approach because it only works if the problem is with Postgres_ 

 # roll back Postgres to the version it was at in the last successful import 
 ** this may require building Postgres from source, because past _revisions_ of the same numeric version might only be available in version control, not in binary form via apt-get (which numbers packages by numeric version) 
 ** if this isn't possible, it may be necessary to downgrade to Postgres 9.2 (which will unfortunately be missing some features that we now use) 
 # see if this fixes the problem

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