Thread (1 message) 1 message, 1 author, 2002-09-03

Re: Runlevel for Sleep?

From: Sourav K Mandal <hidden>
Date: 2002-09-03 23:38:38

Let me explain:
It may be one of the first times a linux system can properly sleep, given 
that current boxes use lots of weird hardware, which may need special 
handling. The init scripts handle just that, transitions between power states
 * 
of the system. Should we 'reserve' one or two runlevels (say: 7, 8) for sleep
 * 
and write init-scripts accordingly? (we may need to differentiate between S3 
and S4)
I would second this idea.  Right now, when i suspend I have to do
a bunch of module loading/unloading cycles to keep my hardware from
freaking out.  I think a bunch of scripts in the init tree is better
than a bunch of scripts in root's home directory.


Sourav

In my personal case, I found I should set the clock and run 'anacron' 
whenever I wake from sleep. A shell script is more than enough for them. I 
should also unmount the nfs bafore sleeping, since it will time-out while 
sleeping. Each user may add his own entries, according to his hw (including 
bug cases where re-init at wake is needed) and software daemons. For example,
 * 
bring down a ppp Internet connection..

Using special daemons and binaries to handle sleep preparation and wake 
restoration may not be enough and will add extra running processes to the 
system. Init is already there and has a suitable functionality.



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