Need a uuid_update_7102 function to make database adjustments now done by uuid_install

I spoke too soon; although the procedure I described above did allow the updatedb to work, I am still having the problems with missing uuid columns described here: http://drupal.org/node/1255550

I could get the site back to a working state by doing this:

ALTER TABLE  `node_revision` ADD  `vuuid` VARCHAR( 36 ) NOT NULL DEFAULT  '' COMMENT  'The Universally Unique Identifier.';
ALTER TABLE  `node` ADD  `uuid` VARCHAR( 36 ) NOT NULL DEFAULT  '' COMMENT  'The Universally Unique Identifier.';
ALTER TABLE  `file_managed` ADD  `uuid` VARCHAR( 36 ) NOT NULL DEFAULT  '' COMMENT  'The Universally Unique Identifier.';
ALTER TABLE  `users` ADD  `uuid` VARCHAR( 36 ) NOT NULL DEFAULT  '' COMMENT  'The Universally Unique Identifier.';

However, I would like this to work cleanly from Drush site upgrade. Any guidance on why these fields are not being added, and how this could be fixed in a more permanent way?

Investigating a little further, I discovered that the missing uuid fields in my upgrade were not some sort of unusual edge case; there simply isn't an update function that adds the fields that are put in by the uuid_install() function. The fix is therefore trivial; just duplicate the operations done by install in an update function. The attached patch worked great for me. However, I did not include the call to uuid_sync_all(); I am not sure if that too might be necessary.

Please also roll a 6.x-beta3 release from the current 6.x-dev branch; otherwise, uuid-6.x users upgrading to Drupal 7 won't get even this far (unless they know to update to 6.x-dev first).

Heck, #2 shouldn't have failed testing. I guess the change wasn't so trivial after all. Here is a simpler change -- this is mostly for the test bot.

Okay, test bot, this no-code-change patch is for you.

Ahem. Setting issue status.

Could a human please help out here? It looks like uuid 7.x-dev HEAD is failing tests. Tests look okay by inspection; no time to work on this further right now. #2 is the preferred patch for this issue.

I had the wrong version set; patches above are against 7.x-1.x-dev, not 7.x-1.0-alpha3.

#2: uuid-update-install-uuid-fields.patch queued for re-testing.

Awesome -- thanks. I was thinking about it, and figured that the update function needs to call uuid_sync_all(), just like install does. This patch adds that call. I also added a couple of perhaps-slightly-excessive comments about what to do on the next schema update, to reduce deep-thinking requirements should something change again after a period of time has elapsed. Feel free to trim these if you wish. ("If I had more time, I would have written a shorter comment." :> )

Very glad to see this committed; thanks. The added UPGRADE.txt was very helpful. I also added another issue #1482586: Upgrading from UUID 6.x to 7.x, and from 7.x-1.0-alpha1 to later versions to discuss the upgrade path.