# Testing for commit reachability through plumbing commands 4 messages from 2014-03-06 to 2014-03-06. Participants: Martin Langhoff, Andreas Schwab, Jeff King. Thread: https://gitlist.dev/t/36076 ## Martin Langhoff, 2014-03-06 17:17 Subject: Testing for commit reachability through plumbing commands Message-ID: URL: https://gitlist.dev/e/CACPiFCJLyE6XC9dY_eawe2y9gS4YsPdTbqkKAd0dcPXd5-eMCg%40mail.gmail.com ``` I have a shell script that trims old history on a cronjob. This is for a repo that is used to track reports that have limited "life" (like logs). Old history is trimmed with grafts pointing to an empty "root" commit. Right now, info/graft grows unbound. I am looking for a way to trim unreachable grafts, I would like to be able to say something like: git is-reachable treeish Grepping through docs and existing code hasn't helped, but perhaps I'm missing something obvious... This repository has a couple hundred branches (one per server tracked). For a single branch, I can picture a relatively easy approach with git merge-base. thanks! m -- martin.langhoff@gmail.com - ask interesting questions - don't get distracted with shiny stuff - working code first ~ http://docs.moodle.org/en/User:Martin_Langhoff ``` ## Andreas Schwab, 2014-03-06 19:17 Subject: Re: Testing for commit reachability through plumbing commands Message-ID: <877g879lwp.fsf@igel.home> URL: https://gitlist.dev/e/877g879lwp.fsf%40igel.home In-Reply-To: ``` Martin Langhoff writes: > I have a shell script that trims old history on a cronjob. This is for > a repo that is used to track reports that have limited "life" (like > logs). Old history is trimmed with grafts pointing to an empty "root" > commit. > > Right now, info/graft grows unbound. I am looking for a way to trim > unreachable grafts, I would like to be able to say something like: > > git is-reachable treeish > > Grepping through docs and existing code hasn't helped, but perhaps I'm > missing something obvious... Does git fsck --unreachable --no-reflogs help? Andreas. -- Andreas Schwab, schwab@linux-m68k.org GPG Key fingerprint = 58CA 54C7 6D53 942B 1756 01D3 44D5 214B 8276 4ED5 "And now for something completely different." ``` ## Martin Langhoff, 2014-03-06 19:29 Subject: Re: Testing for commit reachability through plumbing commands Message-ID: URL: https://gitlist.dev/e/CACPiFC%2Bhajx%2Bz_Yq8vC88Q2DsSyD6zg0uOcjMmo7Qhj2m7r4Fg%40mail.gmail.com In-Reply-To: <877g879lwp.fsf@igel.home> ``` On Thu, Mar 6, 2014 at 2:17 PM, Andreas Schwab wrote: > Does git fsck --unreachable --no-reflogs help? Well, my script, called regularly, does: - adds grafts - git repack -AFfd (which unpacks unreachable objects) - git prune --expire now .... hmm, I guess could prune the grafts using git fsck --unreachable --no-reflogs before pruning the objects themselves. we'll find out if it works :-) m -- martin.langhoff@gmail.com - ask interesting questions - don't get distracted with shiny stuff - working code first ~ http://docs.moodle.org/en/User:Martin_Langhoff ``` ## Jeff King, 2014-03-06 20:23 Subject: Re: Testing for commit reachability through plumbing commands Message-ID: <20140306202319.GB29659@sigill.intra.peff.net> URL: https://gitlist.dev/e/20140306202319.GB29659%40sigill.intra.peff.net In-Reply-To: ``` On Thu, Mar 06, 2014 at 12:17:34PM -0500, Martin Langhoff wrote: > I have a shell script that trims old history on a cronjob. This is for > a repo that is used to track reports that have limited "life" (like > logs). Old history is trimmed with grafts pointing to an empty "root" > commit. > > Right now, info/graft grows unbound. I am looking for a way to trim > unreachable grafts, I would like to be able to say something like: > > git is-reachable treeish How about: git rev-list --objects --all | cut -d' ' -f1 | grep $(git rev-parse treeish) Add "--reflog" to the rev-list invocation if you want to catch things referenced by the reflog, too. If you're looking for a commit, you can drop the "--objects", and it will run much faster. -Peff ```