WakeOnLan before booting

[lynara]

I'm using an NFS share as storage partition. Since my NAS shuts down if it is not needed I have to start it manually every time before starting my openelec.
I thought it would be nice if openelec would do this for me before starting up, so I modified the initramfs to check weather the NAS is running or not. If it is not running we send out a magic packet to boot it up. I have added the following parameters for the kernel cmd line:
"wol_mac=" for the mac-address to wake (e.g. 00:00:00:00:00:00)
"wol_ip=" the ip of the device to check whether it is running or not (e.g. 192.168.1.12)
"wol_wait=" to specify a delay after the magic packet was send before continuing booting

Hope this little feature can be added :)

[fritsch]

Seems non intrusive.

What happens if your NAS would need longer than usual? e.g. wol_wait is not sufficient? It will just not continue? Is there a chance this will harm something?

You would also consider being maintainer of the "network boot section" to maintain, document that?

[lynara]

Hi,
if the NAS would need longer same thing will happen as if it isn't running. Boot process will stop and will display:
"*** Error in mount_storage: mount_common: Could not mount 192.168.1.12:/mountpoint ***

Starting debugging shell..."

In addition the mount_common command has an additional own timeout value, which extends the delay a litte bit.

I can't imaging that there can be done any harm, since everything which is present / mounted at that point is read-only.

By "You would also consider being maintainer of the "network boot section" to maintain, document that?" you mean if I could add a section to the wiki page and document how this WOL works and how it can be configured? - I could do that.

Just to point it out, KERNEL and SYSTEM image are loaded from sd-card, only /storage is located on NFS, think this is a good way if you're using a raspberry pi.

[stefansaraev]

nice done.
would be nice if you squash last 3 commits (init) ;)

[lynara]

Thanks.
Hope I did the squashing the right way?

[fritsch]

Does not look it it.

git fetch oe-upstream
git rebase -i oe-upstream/master

pick all those, that you want to have single picked and for those to squash, write pick infront of the first one and squash in front of the rest under it.

backup your branch before rebase foo :-) via git branch mylovelbackup

[lynara]

Thank you, think i got it now :)

[fritsch]

Really nice. Thx again. Please think about documentation.

[fritsch]

ERR: don't forget I wanted to say :-)

[stefansaraev]

cosmetics to match overall code style in init:

   if [ -n "$wol_ip" -a -n "$wol_mac" -a -n "$wol_wait" ]; then
      if ! ping -q -c 2 "$wol_ip" &>/dev/null; then
...

EDIT: ah too late. it's fine anyway :)

[lynara]

Thanks for merging :)

@fritsch did you receive my mail? If not here again the docu I wrote, hope it is alright:
http://pastebin.com/W0FBdJY8

[fritsch]

@AndreasMN
Thanks much. As you are the maintainer now :-). Please contact @newphreak on IRC to get a wiki account and then this can go in. Thanks much again.