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From: Duy Nguyen <>
To: "Randall S. Becker" <>
Cc: Git Mailing List <>
Subject: Re: [Possible Bug] Commit generates GC repack failure
Date: Mon, 14 Jan 2019 22:03:18 +0700
Message-ID: <> (raw)
In-Reply-To: <002601d4ac18$83d4a210$8b7de630$>

On Mon, Jan 14, 2019 at 9:51 PM Randall S. Becker
<> wrote:
> Hi All,
> I'm trying to track down what happened this morning. We had a commit that
> caused a background gc to occur. What happened was:
> $ git commit -m "history commit ... "
> Auto packing the repository in background for optimum performance.
> See "git help gc" for manual housekeeping.
> warning: The last gc run reported the following. Please correct the root
> cause
> and remove .git/gc.log.
> Automatic cleanup will not be performed until the file is removed.
> fatal: open /dev/null failed: Invalid function argument

sanitize_stdfds() in setup.c can attempt to open /dev/null then
redirect stdout and stderr to it. I think this is part of the
daemonization that is done in background gc.

> fatal: failed to run repack
> Obviously the /dev/null open was not right, but I don't know where this is
> in the git code to investigate further. Any pointers on where to look would
> be appreciated. This started happening at  2.20.1 on the NonStop platform.
> Cheers,
> Randall
> -- Brief whoami:
>  NonStop developer since approximately 211288444200000000
>  UNIX developer since approximately 421664400
> -- In my real life, I talk too much.


  reply index

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-01-14 14:50 Randall S. Becker
2019-01-14 15:03 ` Duy Nguyen [this message]
2019-01-14 15:07   ` Duy Nguyen
2019-01-14 15:11 ` Ævar Arnfjörð Bjarmason
2019-01-14 16:09   ` Randall S. Becker

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