On Fri, 17 Apr 2020 at 12:37, Sreyan Chakravarty <sreya...@gmail.com> wrote:
> > On Thu, 2020-04-16 at 17:12 -0700, Samuel Sieb wrote: > > > > It has to be a partition. A file can be on any kind of filesystem, so > > how would the resume function know what to do? > > > > From systemd-hibernate-resume(8): > > > > systemd-hibernate-resume@.service initiates the resume from > hibernation. It is > > instantiated with the device to resume from as the template argument. > > > > systemd-hibernate-resume only supports the in-kernel hibernation > implementation, known as > > swsusp[1]. Internally, it works by writing the major:minor of specified > device node to > > /sys/power/resume. > > > > > > poc > > If you see the documentation about swsusp here: > https://www.kernel.org/doc/Documentation/power/swsusp.txt > > It clearly states you can use a swap file. > > Now I am confused as to why you say a swap file won't work. > > Where am I going wrong ? > Have you looked at "man 5 systemd-sleep.conf". It describes 4 modes. Hibernate saves enough state so the system can be restored after power is "lost". This requires stopping the filesystems, so you have to save the state outside the regular filesystems. -- George N. White III
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