Re: RFC: InfiniBand hotplug agent

[md@Linux.IT (Marco d'Itri)]

On Mar 22, Roland Dreier <rdreier@cisco.com> wrote:

>  - What's the right way to get this into distributions?  File wishlist
>    bugs against udev with the rule and the script included?
Yes.

> cd /lib/udev/
> . ./hotplug.functions
I think that this is debian-specific, and you are not using it anyway.

> if [ "$ACTION" = "add" ]; then
Remove this if statement and use such a rule instead:

ACTION="add", SUBSYSTEM="infiniband", RUN+="infiniband.agent"

#!/bin/sh -e

DESC_PATH="/sys/$DEVPATH/node_desc"

# is this actually needed? can node_desc really not exist?
[ -e "$DESC_PATH" ] || exit 0

# by using read instead of cat you save a fork+exec
read OLD_DESC < $DESC_PATH
DESC="`hostname` ($OLD_DESC)"
echo -n $DESC > $DESC_PATH


But probably using hostname(1) in a RUN rule is not such a great idea,
because at boot time the script will be run long before the system
hostname will have been set by an init script.

-- 
ciao,
Marco


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