On 20/04/15 17:41, FusionX86 wrote:
Hello,

Hopefully this is an appropriate place to ask questions about git-p4.

I started at a company that wants to migrate from Perforce to Git. I'm
new to Perforce and have been trying to learn just enough about it to
get through this migration. Anyway, I've been playing with git-p4 and
have one question/problem to discuss.

After setting up the p4 cli client I can 'p4 sync' some
//depot/main/app1 which pulls down the files I would expect from the
Perforce server. If I use 'git p4 clone //depot/main/app1', I get:

"Doing initial import of //depot/main/app1/ from revision #head into
refs/remotes/p4/master"

But I don't get any files from that depot/folder pulled down. I can
git p4 clone other depot/folders though and get some files. I suspect
that I'm just not understanding how the git-p4 module works.

You could try doing the clone with '-v' to get a bit more information.


Basically, I'm hoping to setup a live sync of Perforce to Git of
certain depots in preparation for the migration. Also, if anyone has
pointers or guides for this type of migration, any help is
appreciated.

I've done something similar in the past. You'll want to enable the --preserve-user option, for which you will need admin rights.

If it's a one-way mirror (p4-to-git) then just run git-p4 periodically (if you use cron, then try to avoid having two or more instances running at the same time).

If you want it to be two-way then it gets a bit more complicated.

You might also want to consider using git fusion, which is Perforce's take on this problem. I've not used it myself.

From past experience though I would say the biggest problem is getting developers to switch from the P4 mindset (centralized; code review hard to do or ignored) to the git mindset (decentralized; code review actively supported by the version control system).

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