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Re: [dm-devel] multipathd segfault and error calling out



On Wed, Feb 25, 2009 at 09:07:44PM -0500, John A. Sullivan III wrote:
> Hello, all.  I am running on kernel 2.6.27 on CentOS 5.2 with VServer
> and device-mapper-multipath-0.4.7-17.el5.  I have a custom
> mpath_prio_ssi script which takes the device name (e.g., sdaa), pulls
> out the path from /etc/disk/by-path and then echos a priority based upon
> a lookup table.  It works perfectly fine from the command line.
> multipath -ll shows the priorities assigned perfectly and exactly the
> right paths are active.
> 
> However, when I start multipathd, it all goes down the tubes.  The paths
> disappear and /var/log/messages is filled with:
> Feb 25 20:50:17 vd01 multipathd: error calling out /usr/local/sbin/mpath_prio_ssi sdh

Keep in mind that the environment you have when multipathd calls is quite
limited. I believe there is no PATH set, nor any other "normal" values.

Make sure your code uses absolute paths. So "/bin/grep" ,"/bin/cut", etc..


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