Sergey Trofimov <sarg@HIDDEN>
to control <at> debbugs.gnu.org.
Full text available.Ludovic Courtès <ludo@HIDDEN>
to control <at> debbugs.gnu.org.
Full text available.Received: (at 66684) by debbugs.gnu.org; 23 Oct 2023 19:59:16 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Mon Oct 23 15:59:16 2023 Received: from localhost ([127.0.0.1]:51866 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1qv152-0002v5-6J for submit <at> debbugs.gnu.org; Mon, 23 Oct 2023 15:59:16 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:52276) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <ludo@HIDDEN>) id 1qv150-0002ur-1M for 66684 <at> debbugs.gnu.org; Mon, 23 Oct 2023 15:59:14 -0400 Received: from fencepost.gnu.org ([2001:470:142:3::e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <ludo@HIDDEN>) id 1qv14R-0003e2-Ia; Mon, 23 Oct 2023 15:58:39 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=MIME-Version:Date:References:In-Reply-To:Subject:To: From; bh=H7r3S6Dj8EjSlk9DUVWMlO3TXuLxBmraXBwX/201jis=; b=qgs47WjxD1pGfORQSZeE tYwpWBz5PD8ij2uWPVRL0zrNMqlaGPh07WJ3N5C73P1bT7wWsp/L21akI7JqVLI2DU6ofGnGQtoE1 sXlDX7bd4mzLJHh1/9ocDkENOqGPk6UAiX4P9Pc/2Doxn2jHoFAESnO8Z0C9LBd2Bid1RFetcB6qM 253C5O1xbugjBaGQl4pvxTQg6ow2CvhExODAVgE19NcMYM3VQ6QVlElLWKmy283yu+3HxTy2tnj67 ihVlhZf/iFLhGg1R2KMfIsOufAZsknxBCVTmEOs3BloUWQbJ3n0V3KwRWdvONQdQ1ugoUbtQ35O4+ hpQmRDB1nDkPzQ==; From: =?utf-8?Q?Ludovic_Court=C3=A8s?= <ludo@HIDDEN> To: Vladilen Kozin <vladilen.kozin@HIDDEN> Subject: Re: bug#66684: [shepherd] Altering system time renders herd unresponsive In-Reply-To: <CACw=CXN8dbRb8RmiHimqTs6J_QtSz5HuXaxf0mkRJeEEX1Wy7w@HIDDEN> (Vladilen Kozin's message of "Sun, 22 Oct 2023 14:43:28 +0100") References: <CACw=CXN8dbRb8RmiHimqTs6J_QtSz5HuXaxf0mkRJeEEX1Wy7w@HIDDEN> Date: Mon, 23 Oct 2023 21:58:33 +0200 Message-ID: <874jihf6vq.fsf@HIDDEN> User-Agent: Gnus/5.13 (Gnus v5.13) MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 66684 Cc: 66684 <at> debbugs.gnu.org X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -3.3 (---) Hi Vladilen, Vladilen Kozin <vladilen.kozin@HIDDEN> skribis: > My server would consistently run with system time 1h ahead of actual. > Both `date` and `hwclock` would show the same time off by 1hr, while > BIOS showed me correct time. I'm not sure why, but some services won't > run if time difference is e.g. over 15min or smth, so. > > $ sudo date -s '-1 hour' > > fixes time but causes `herd` to become unresponsive as in you type a > command, any command and stare at tty stuck. Also ssh'ing into the > system becomes impossible. Thanks for your report. This issue comes from Fibers 1.3.1: https://github.com/wingo/fibers/issues/89 There=E2=80=99s currently no bug-fix in sight though. Ludo=E2=80=99.
bug-guix@HIDDEN:bug#66684; Package guix.
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From: Vladilen Kozin <vladilen.kozin@HIDDEN>
Date: Sun, 22 Oct 2023 14:43:28 +0100
Message-ID: <CACw=CXN8dbRb8RmiHimqTs6J_QtSz5HuXaxf0mkRJeEEX1Wy7w@HIDDEN>
Subject: [shepherd] Altering system time renders herd unresponsive
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Hello guix.
My server would consistently run with system time 1h ahead of actual.
Both `date` and `hwclock` would show the same time off by 1hr, while
BIOS showed me correct time. I'm not sure why, but some services won't
run if time difference is e.g. over 15min or smth, so.
$ sudo date -s '-1 hour'
fixes time but causes `herd` to become unresponsive as in you type a
command, any command and stare at tty stuck. Also ssh'ing into the
system becomes impossible. Any attempt gets logged in
/var/log/messages - I can see that, but you again just stare at
unresponsive terminal. Initially I thought it fried shepherd
completely, so I powercycle the system to get it back. `sudo reboot`
being an alias to `herd` command will of course not work - so you have
to do it physically. Annoying but feasible on a desktop system -
complete nightmare on a physical server which may take up to 20min to
reboot due to inventory lifecycle and such.
By chance, I got distracted this time and just left it hanging. Lo and
behold it unfroze some 15-20min later. What gives I've no clue.
I hope I won't be seeing this particular issue again, cause I followed
system clock alteration with:
$ sudo hwclock -w
and reboot shows correct time.
In general my experience with shepherd has been less than stellar.
IMO, this just shouldn't happen with PID 1 ever - cause there isn't
anything you can do at this point. Not the first time it became
unresponsive. On occasion after pull that changes some user service
code, followed by system reconfigure those services would start
failing to find their binaries - best guess I have there is that those
specific services depend on user-home service or some such and
something happens that prevents discovery of said binaries in PATH -
binaries in those services aren't referenced by absolute path in GNU
store. Separate issue.
Generation 8 Oct 14 2023 00:22:53 (current)
file name: /var/guix/profiles/system-8-link
canonical file name: /gnu/store/j9i2w1zacw7sl8vlb7k1g7p0vnd58ns7-system
label: GNU with Linux 6.4.16
bootloader: grub
root device: label: "r720-guix-0"
kernel: /gnu/store/cbc7x9in2dnjrnh840c21ivgygnndp1c-linux-6.4.16/bzImage
channels:
guix:
repository URL: https://git.savannah.gnu.org/git/guix.git
branch: master
commit: 3963fa1a465708690cd1554d911613f1c92f5eef
Thank you
--
Best regards
Vlad Kozin
Vladilen Kozin <vladilen.kozin@HIDDEN>:bug-guix@HIDDEN.
Full text available.bug-guix@HIDDEN:bug#66684; Package guix.
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