Is this the proposed shallow checkout fix? Who should own this? 

We can short term fix by squashing history for this repo (which is what we've done in the past), but the number of PreCQ runs has the history growing much, much faster than it used too. This requires elevated Git permissions, but is quick/easy if you have them and know how (David or Sosa).

We can shallow checkout in cbuildbot to generally reduce the impact the size has. Probably a small chance.

s/chance/change/

don, assigning to you for now, pls assign to Ningning if that's best

trybot .git is now 1.6G.

Let's do the squash during fixit week once and for all (and probably for the last time, since we are rapidly moving to buildbucket for everything)

The two repositories we should look at squashing are:

git clone https://chromium.googlesource.com/chromiumos/manifest-versions
git clone https://chrome-internal.googlesource.com/chromeos/manifest-versions

The internal one is the one that triggered this bug and which sees the most use, but we should check the external one as well.

Should I also do the trybot repos?

chromeos/tryjobs
chromiumos/tryjobs

See how big they are. In particular, compare the .git contents to the non-.git contents. But if it'll help... excellent!

Try not to break an in-progress builds/tryjobs. I have no idea how to manage that, except that missing files will break things, but missing git history doesn't matter (as I understand it).

5.7G    chromeos/manifest-versions
2.1G    chromeos/tryjobs
2.0G    chromiumos/manifest-versions
30M     chromiumos/tryjobs

Dave said that it shouldn't effect in-flight jobs.

Writing a script that will try and do everything as fast as possible to keep everything in sync.

1.1G    chromeos/manifest-versions/.git
1.6G    chromeos/tryjobs/.git
214M    chromiumos/manifest-versions/.git
9.8M    chromiumos/tryjobs/.git

Hum... worth measuring the compressed .git size as well to make sure it really helps.

Added script to be used for auto-squashing repos

example:
git clone https://chromium.googlesource.com/chromiumos/tryjobs
./squash-repo.sh tryjobs

Deleted: squash-repo.sh 1.1 KB

squash-repo.sh 1.1 KB View Download

Working with deputy (Aviv) to close tree before doing manifest-versions repos.

ETA: tonight

Maintenance complete.

Attaching final script used.

Commands run:
$ git clone https://chromium.googlesource.com/chromiumos/tryjobs tryjobs.chromiumos.git
$ git clone https://chromium.googlesource.com/chromiumos/manifest-versions manifest-versions.chromiumos.git
$ git clone https://chrome-internal.googlesource.com/chromeos/manifest-versions manifest-versions.chromeos.git
$ git clone https://chrome-internal.googlesource.com/chromeos/tryjobs tryjobs.chromeos.git
$ ./squash-repo.sh *.git

Deleted: squash-repo.sh 1.1 KB

squash-repo.sh 1.1 KB View Download

Can we check that script in somewhere?

chromite/scripts *MIGHT* be the right place.

hmm, I would want to clean it up some more if we did that. Kinda scary what it does (force-push and all).