configuring /var/run with newer autoconf

[Mike Frysinger]

On 07 Apr 2016 16:49, Łukasz Stelmach wrote:
> TL;DR Is there a chance a patch requiring autconf 2.70 is going to be
>       accepted?
> 
> I found myself in trouble because of a deadlock during boot (on
> Linux). In short: the deadlock happens if I want to make /var
> automountable because.
> 
> a) systemd controls controls automounts.
> 
> b) To mount a file-system systemd needs to know about the underlying
>    block device.
> 
> c) udev tells systemd about devices available.
> 
> d) When udev starts it tries to make some queries via NSS which means
>    connecting to nscd (/var/run/nscd/socket, hardcoded in nscd-client.h)
> 
> Effect: I can't configure /var to be automounted.
> 
> Solutions:
> 
> a) Compile glibc without nscd support. This works for me, now.
> 
> b) Make the path configurable so Linux systems, especially those
>    controlled by systemd which requires /var/run to be a symlink
>    pointing to /run which is mounted by systemd as tmpfs, can use /run
>    instead of /var/run.

b) has been discussed here in the past and declined:
	https://sourceware.org/ml/libc-alpha/2015-03/msg00828.html

but you also have another option and what most people have been doing:
c) symlink /var/run to /run

problem solved
-mike
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