Blueprint changed by Dave Walker: Whiteboard changed: + # FEEDBACK + Discussed with xnox, this is making good progress. + see also: https://blueprints.launchpad.net/ubuntu/+spec/bibisect User Stories: Colin is pinged about a horrible and nasty bug in the installer. After performing a binary bisection across the whole archive over the past month, he narrows it down to a small amount of uploads. After testing images with binaries from those uploads, the bug is pin-pointed and fixed. CD/cloud images are build from a snapshot, instead of having their own mirror. Risks: Wasted bandwidth / disk-space. Test Plans: Release Note: Session Notes: How to do this? - expensive on the public cloud - potentially a lot of storage (i386, amd64 ~ 1TB during quantal) - preserve signatures - Ideally we want daily granularity for the tradeoffs - as well as taking manual snapshots - useful for cdimage building (actually a local mirror is already doing this for ISOs) - this is pilot, test it for one cycle (due to resource constraints) - keep a month at a time..... - dbg symbols is a use-case (well, it is currently stored in a separate archive with - backup to launchpadlibrarian (use a smart-proxy as a fallback to launchpadlibrarian) - useful for full archive binary bisect - avoiding cloud image and iso image skew Workitems: - use cases, costs, stake holders, solutions - how much data does it grow? - how is snapshot.debian.org is created? see also http://summit.ubuntu.com/uds-r/meeting/21105/bibisect/
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