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<TITLE> [Mageia-dev] systemd + separate /var (was Re: more testing for systemd: defaulting to it)
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<H1>[Mageia-dev] systemd + separate /var (was Re: more testing for systemd: defaulting to it)</H1>
<B>Colin Guthrie</B>
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TITLE="[Mageia-dev] systemd + separate /var (was Re: more testing for systemd: defaulting to it)">mageia at colin.guthr.ie
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<I>Mon Sep 12 16:36:41 CEST 2011</I>
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<PRE>'Twas brillig, and Sander Lepik at 12/09/11 07:22 did gyre and gimble:
><i> 08.09.2011 16:53, Thierry Vignaud kirjutas:
</I>>><i> Hi
</I>>><i>
</I>>><i> In order to got more testing for systemd, I'm considering switching
</I>>><i> the installer to:
</I>>><i> - install it
</I>>><i> - default to it (aka add "init=/bin/systemd")
</I>>><i>
</I>>><i> WDYT?
</I>>><i>
</I>>><i> See you
</I>><i> I got another problem. This time with /var. For two systems i have
</I>><i> created /var as a separate volume on LVM. And systemd can't start /var.
</I>><i> It's complaining that some deps failed. So long i only noticed different
</I>><i> types of loggers that won't start. Also complaining about failed deps.
</I>><i> So is there a loop? Loggers won't start as they want to log on /var and
</I>><i> /var can't be mounted as it needs some logger to log it?! I'll try to
</I>><i> test it more on VM but so long it seems that separated /var is causing
</I>><i> boot problems :S (one system didn't start at all (and has weird
</I>><i> repeating errors:
</I>><i> <A HREF="http://dl.dropbox.com/u/4210594/IMG_20110911_230902.jpg">http://dl.dropbox.com/u/4210594/IMG_20110911_230902.jpg</A> ) so i have to
</I>><i> revert back to sysvinit).
</I>
OK, so unless you use rsyslog, I think there could easily be a logging loop.
I packaged the latest rsyslog with all the systemd goodness a couple
weeks back so it should be cool now.
You should definitely mount /var before starting your logger, (systemd
will happily pass over any accumulated log output to the actual logger
when it starts - well not quite systemd, passing it over, but it happens
magically anyway!)
So the question is "Why isn't /var mounted early enough?".
I'm not really in a position to think about why this is right now, but
suffice to say, the auto mounter in systemd should really automatically
mount /var as soon as it's needed, so perhaps the logger is somehow
starting before the automounter?
If you do: "man systemd.special" and look for info about
local-fs.target, it contains some interesting info about how /etc/fstab
is processed.
Primarily it needs the "auto" keyword in the options. Perhaps if you add
"auto" to the mount options (should be harmless for non-systemd) then
things will work fine?
Worth a shot.
Col
--
Colin Guthrie
mageia(at)colin.guthr.ie
<A HREF="http://colin.guthr.ie/">http://colin.guthr.ie/</A>
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