To understand how failures happen, in order to prevent future occurrences by education and process changes.
A postmortem is expected for any tree closures lasting longer than 4 hours, within 72 hours of the outage.
The postmortem should be written by someone involved with detecting and correcting the issue, preferably someone who can take responsibility for the followup.
Please use the postmortem template found here (file -> make a copy).
Your postmortem should include the following sections:
Whenever possible, postmortems should be accessible to the entire Chromium community. If you are a Google employee, and your postmortem contains internal details, see the internal infrastructure team's postmortem site instead.
See also: