Hello On Thu, May 31, 2007 at 01:28:20PM +0200, Hans-Werner Hilse wrote: > On Sun, 27 May 2007 16:21:03 +0200 "Michal 'vorner' Vaner" > <[EMAIL PROTECTED]> wrote: > > > First: You need to load the kernel from the swap, in the time it > > loads, you have no running kernel (well, there is a little part, but > > that one has no clue about network). > > No, that's not entirely true. Userspace suspend and resume is in the > kernel since 2.6.17. See my other post in this thread for a pointer (I > think it was http://suspend.sf.net/). So for this way it really happens > all in userspace, with a fully working kernel available. When the image > is loaded into RAM, the resume utility makes a syscall to have the > kernel automatically copy & switch over. > > See /usr/src/linux/Documentation/power/*suspend* for all the details.
OK, I use suspend 1, which seems the least buggy to me, I did not know some of the suspends were in userspace. If so, then yes, it can work. > > Second: You do not want swap on nfs, since it is terribly slow, buggy, > > nfs can allocate memory to transfer data and you get a circular > > problem > > - to get a memory, you need to get a memory. And, what if your cat > > steps on the ethernet cable? > > Resume aborts, checksum error. But that's it. But true, I wouldn't > trust NFS too much, either. But then, there are nbd's (network block > devices) which would probably work a treat. But userspace resume from a > file on NFS should work reliably, too. No, that was not for resume, but for use of swap on NFS. You need fast response from swap and reliability. > > You might try suspend to ram, thought. It should work on diskless > > machine as well as on any other. > > ...cough, cough... yeah, /as/ well as on any other. So this probably > means: It won't work until you switch off ACPI and resort to APM... But > of course, that will depend. Why? It works fine for me. It just suspends and goes on the other day on my laptop, all working by ACPI - with kernel suspend 1. -- This message has optimized support for formating. Please choose green font and black background so it looks like it should. Michal 'vorner' Vaner
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