Data Migration Brainstorm

In light of the upcoming alpha 2 release, Katie and Sheila met briefly to discuss the various migration scenarios, issues, assumptions etc.

Notes

Scenarios for Chandler - no sharing

• Scenario #1: 0.6.1 -> 0.7
• migrate data
• calendar data only
• easy-ish
• options:
  • install or startup
  • tool

• Scenario #2: 0.6.1 -> alpha 2
• path to migrate data
• calendar data only
• export all ics files
• import all ics files
• kind of ugly

• Scenario #3: alpha2 -> alpha 3
• path to migrate
• only calendar data?
• more than calendar - we possibly need to suppport invitations, what about tasks
• easier than manual route
• potentially a backup and restore all

• Scenario #4: 0.6.1 -> alpha 3, alpha 4
• path to migrate
• probably pretty ugly

• Scenario #5:
• alpha 3 -> alpha 4
• alpha 4 -> 0.7
• not sure yet

• Scenario #6: alpha 2 -> alpha 4
• probably a low priority
• alpha 2 -> 0.7...also low priority

• Possible incremental solutions
• Menuitem to export all and import all
• Install new version - convert

Sharing scenarios

• Currently Chandler 0.6 and Chandler 0.6.1 work with Cosmo 0.2.8
• Cosmo 0.3 will release about the same time as Chandler 0.7alpha2
• Cosmo demo will be upgraded - 0.6, 0.6.1 and alpha2 should all work with Cosmo 0.3
• Chandler 0.6 and 0.6.1 users can sync shares with alpha 2 users

• Migration story for sharers
• Any shares you have published can be restored
• Users can resubscribe to shares using previous urls
• This should work for more than just calendar data

• If you have a Work collection that is shared and a Home collection that is not shared AND an event appears on both calendars, you need to do the restore before the import.
• In general we should just tell users to restore shares before importing other calendars.
• In the future can we have a way to restore everything in one step

Other

• All the migration instructions will have to be added to a readme but how do we make sure people see this?
• We probably need to change the current "old repository message" - perhaps a link to the readme
• Check with Heikki and Bear about our options on the installer side

-- SheilaMooney - 19 Apr 2006