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Bug 368082

Summary:	Maintenance of CDO Git repository
Product:	Community	Reporter:	Stefan Winkler <stefan>
Component:	Git	Assignee:	Eclipse Webmaster <webmaster>
Status:	RESOLVED FIXED	QA Contact:
Severity:	normal
Priority:	P3	CC:	emf.cdo-inbox, stepper
Version:	unspecified
Target Milestone:	---
Hardware:	PC
OS:	Mac OS X - Carbon (unsup.)
Whiteboard:

Description Stefan Winkler

2012-01-07 09:24:00 EST

Eike and I have planned a maintenance operation on the main Git repo.
For this I request temporary SSH shell access for the account "swinkler" (sorry, my Bugzilla and committer accounts are currently different ones. See Bug 368080)

Here's what we are planning to do:

1. Adjust tags which have been damaged by earlier maintenance operations:

git tag -f committers/estepper/2.0-end-of-maintenance a84841d
git tag -f committers/estepper/before-revision-holder  9a6fedc
git tag -f committers/estepper/cdo2-first-roundtrip 44fad22
git tag -f committers/estepper/pop-20080726 0bf4028
git tag -f committers/smcduff/merge-20080609 35b563b
git tag -f drops/2.0.2 8309921
git tag -f drops/I20110514-0431 925405c
git tag -f drops/R20100614-1613 dac8755
git tag -f drops/R20100914-1022 73ab4b9

2. Shrink our repository and remove subtrees with big objects

git filter-branch --tree-filter 'rm -rf incubation/ infrastructure/ deprecated/' --tag-name-filter 'cat' --prune-empty -- --all
git for-each-ref --format="%(refname)" refs/original/ | xargs -n 1 git update-ref -d
git reflog expire --expire=now --all
git gc --prune=now

(the incubation, infrastructure and deprecated subtrees have already been factored out into separate repositories. I had forgotten to delete the original paths from the main repository. Deleting them now, will require all users to clone again, but it will also improve cloning speeds by 30 to 50% and shrink the repository by that amount)

3. Ensure that repository policies are safe

after the discussion of Bug 362076, we have agreed that we want to have

receive.denyNonFastForwards=true
receive.denyDeletes=true

set on our server repository. I will check if these are already set and if not, set them so we have a minimum safety against ourselves using git in a bad way ;-)


The plan is to carry out these activities next Friday 1/13 at 10:00 EST (16:00 CET). Please confirm, that you can give me shell access at that time.
After the actions mentioned above have been finished (I estimate 3-4 hours), I'll report back to this Bug and you can revoke my shell access again.

Comment 1 Eike Stepper

2012-01-07 09:43:08 EST

(In reply to comment #0)
> Here's what we are planning to do: [...]

Not to forget a complete backup prior to the other steps :P

Comment 2 Stefan Winkler

2012-01-08 06:22:52 EST

(In reply to comment #1)
> (In reply to comment #0)
> > Here's what we are planning to do: [...]
> 
> Not to forget a complete backup prior to the other steps :P

Implied ;-)

Comment 3 Eclipse Webmaster

2012-01-09 14:11:52 EST

Ok, I'll grant you shell access to build.eclipse.org 01/13/12 for you to perform this maintenance .

-M.

Comment 4 Stefan Winkler

2012-01-13 11:15:55 EST

Hi,

I still have the restricted shell on build.eclipse.org :-(
Am I doing something wrong or am I too early?

Cheers,
Stefan

(In reply to comment #3)
> Ok, I'll grant you shell access to build.eclipse.org 01/13/12 for you to
> perform this maintenance .
> 
> -M.

Comment 5 Eclipse Webmaster

2012-01-13 13:32:30 EST

Sorry.  I lost site of this while working on some back end code.  You should be all set.

-M.

Comment 6 Stefan Winkler

2012-01-14 06:07:15 EST

No problem. The maintenance is complete and successful.
You can revoke my shell access and resolve the Bug.

Thank you.

Comment 7 Eclipse Webmaster

2012-01-16 10:28:34 EST

Ok, done.

-M.