tuxonice and suspend to file

[fau]

Hello,
I ran into some problems trying to set up hibernating to file on my laptop. I have 2.6.30 tuxonice-sources kernel with default tuxonice configuration. When I enter "FilewriterLocation /suspend_file 2048" tuxonice creates the file and I can use it to suspend during that session. However after reboot it doesn't recognize it and prints following error:

[MotivatedTea]

Your setup is incomplete. You need to follow all of the instructions here:
http://en.gentoo-wiki.com/wiki/TuxOnIce#Alternative:_Using_a_Dedicated_File
In particular, you need to determine the hibernation file's offset and include that in the resume parameter.

[Paczesiowa]

it's a known bug in tuxonice (2 years?), kernel part uses different signature than hibernate script (you can check first 10 bytes of that file, it's supposed to be 'tuxonice' and it usually is garbage). it was supposed to be fixed with newer hibernate-script, but nobody knows when it will come out.

[fau]

When I manually add "TuxOnIce" to my suspend file I get "no storage avaible" error. I guess that this time kernel doesn't recognise his header so it breaks. Is there any way to suspend to file using tuxonice then?

[Paczesiowa]

how do you add that? "echo tuxonice > suspend_file"? that puts ONLY that word in the file, so it's too small. you have to create as as big as it must be (e.g. using hibernate script) and then overwrite first word, I don't know how to do that from bash, but it's easy to do in C, iirc I have that code on my laptop so if you want I could get it for you.

[MotivatedTea]

You can put the header in the file like this:

[fau]

@MotivatedTea:
It works, but I don't know why hibernate-cleanup doesn't do it - suspend file's header is broken after every reboot.
This is my hibernate-cleanup script:

[MotivatedTea]

That's the same as mine, but I'm using swapfiles now, not hibernation files. However, it looks like the hibernate-cleanup script won't do anything unless "/var/run/TuxOnIce_filewriter_image_exists" exists:

[fau]

I've removed error stream's redirection from script and now it prints:

[MotivatedTea]

That's coming from check_swap_sig, and you're not using the swap writer. That error message just indicates that it didn't find a hibernation image in what it thought might be a swap file (but wasn't). As I said before, if you're using a hibernation file, then the hibernate-cleanup script isn't going to do anything unless the file "/var/run/TuxOnIce_filewriter_image_exists" exists. Have you checked to see if it does?

[fau]

Ach I forgot - it doesn't exist.

[MotivatedTea]

I'm not sure what it is that is supposed to create that file, but that explains why the hibernate-cleanup script isn't doing anything. At this point, you could try to figure out where that's supposed to be coming from (maybe file a bug report when you do), or you could hack it so that it works. You could modify the hibernate-cleanup script, but you might have to re-do the modifications when the scripts get updated. Or, since you have the right command to run, you could put it in "/etc/conf.d/local.start" for now until the problem gets solved.

Or, you could switch to using a swapfile. (You can use swap files, not just partitions.) Tuxonice allows you to specify scripts that get run during the hibernation process and on resuming. What I played around with in the past was making a swapfile, but not setting it to mount automatically in /etc/fstab. I would only mount it just before hibernation, and then unmount it just after. That means it has pretty much the same effect as a hibernation file.

[fau]

OK, I'll do one of these. Thank you for helping me