Adrian von Bidder <avbid...@fortytwo.ch> writes:
> On Wednesday 02 March 2011 17.02:11 Marius Vollmer wrote:
>> - Instead, we move all packages that are to be unpacked into
>> half-installed / reinstreq before touching the first one, and put a
>> big sync() right before carefully writing /var/lib/dpkg/status.
>
> You don't want to do this. While production systems usually are upgraded in
> downtime windows (with less load), it is sometimes necessary to install some
> package (tcpdump or whatever to diagnose problems...) while the system is
> under high load. Especially when you're trying to find out why the machine
> has a load of 20 and you can't afford to kill it...
>
> On a machine with lots of RAM (== disk cache...) and high I/O load, you
> don't want to do a (global!) sync(). This can totally kill the machine for
> 20min or more and is a big no go.
>
> -- vbi
Then don't use the option. It should definetly be an option:
sync / fs sync / fsync / sync only metadata / single sync at end / no sync at
all
MfG
Goswin
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