Hi. On Friday 14 April 2006 12:56, Shaohua Li wrote: > On Thu, 2006-04-13 at 19:26 +0800, Nigel Cunningham wrote: > > Hi Allan. > > > > On Wednesday 12 April 2006 22:50, Cleaveland, AJ Allan @ IS wrote: > > > I'm trying to get hibernate to work on CentOS 4. What I really want to > > > do is use hibernate to start-up the machine every time. To do this I > > > would create an "image" to come out of hibernate with and set the > > > machine to always think it's coming out of hibernate, no matter how it > > > was actually shut down. It would always use my "image", even if it was > > > placed in hibernate when it shut down. Without rewriting other > > > people's code does anyone know of a way to do this? > > > > > > Thank you, > > > Allan > > > > I'm not sure I understand what you're saying correctly, but it sounds to > > me like you want something like the KeepImage feature in Suspend2. This > > feature lets you suspend once, and subsequently simply powerdown rather > > than rewriting the image. To use this mode reliably, any filesystems > > mounted when the image is created have to be immutable. This is because > > the image will include information about the filesystems such as > > superblocks, inodes, dentries and so on, and these data structures must > > match the data on disk. > > We could have file in memory for the snapshot kernel before we mount any > hardisk filesystem, and then create a new initrd including the snapshot > image after boot. Later we always use the new initrd. This way even the > hardisk is touched, the kernel can still resume. Yes. I've been thinking about this for a while, and planned to work on it to reduce the boot time of some of our Cyclades products. In fact, I was thinking about making the initrd be the image (using code I already have in the filewriter to do this). Regards, Nigel
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