aa226bbb6b
We had a weird problem where, after moving to a new, faster server, "git push" would sometimes fail like this: Unpacking objects: 100% (3/3), done. fatal: The remote end hung up unexpectedly fatal: The remote end hung up unexpectedly What turned out to be going on was that git-receive-pack was dying due to an uncaught SIGPIPE. The SIGPIPE occurred when it tried to write to the pre-receive hook's stdin. The pre-receive hook, in this case, was able to do all the checks it needed to do without the input, and so did exit(0) without consuming it. Apparently that causes a race. Most of the time, git forks the hook, writes output to the hook, and then the hook runs, ignores it, and exits. But sometimes, on our new faster server, git forked the hook, and it ran, and exited, before git got around to writing to it, resulting in the SIGPIPE. write(7, "c9f98c67d70a1cfeba382ec27d87644a"..., 100) = -1 EPIPE (Broken pipe) --- SIGPIPE (Broken pipe) @ 0 (0) --- I think git should ignore SIGPIPE when writing to hooks. Otherwise, hooks may have to go out of their way to consume all input, and as I've seen, the races when they fail to do this can lurk undiscovered. I have written to the git mailing list about this. As a workaround, consume all stdin before exiting. |
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README.Debian
It's a good idea, and in some cases a requirement, to rebuild your wikis when upgrading to a new version of ikiwiki. If you have a lot of different wikis on a system, this can be a pain to do by hand, and it's a good idea to automate it anyway. This Debian package of ikiwiki supports rebuilding wikis on upgrade. It will run ikiwiki-mass-rebuild if necessary when upgraded. The file /etc/ikiwiki/wikilist lists the setup files of wikis to rebuild, as well as the user who owns the wiki. Edit this file and add any wikis you set up. You can also allow users to maintain their own list of wikis to rebuild, by listing their usernames in /etc/ikiwiki/wikilist without corresponding setup files. ikiwiki will then read their lists of wikis from .ikiwiki/wikilist in their home directories. The examples directory contains the source to some example wiki setups.