Messages in this thread | | | From | Vitaly Kuznetsov <> | Subject | Re: [PATCH 2/3] hv_utils: Support host-initiated hibernation request | Date | Thu, 12 Sep 2019 18:26:56 +0200 |
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Dexuan Cui <decui@microsoft.com> writes:
> +static void perform_hibernation(struct work_struct *dummy) > +{ > + /* > + * The user is expected to create the program, which can be a simple > + * script containing two lines: > + * #!/bin/bash > + * echo disk > /sys/power/state
'systemctl hibernate' is what people do nowadays :-)
> + */ > + static char hibernate_cmd[PATH_MAX] = "/sbin/hyperv-hibernate"; > +
Let's not do that (I remember when we were triggering network restart from netvsc and it was a lot of pain).
Receiving hybernation request from the host is similar to pushing power button on your desktop: an ACPI event is going to be generated and your userspace will somehow react to it. I see two options: 1) We try to hook up some existing userspace (udev?) 2) We write a new hyperv-daemon handling the request (with a config file instead of hardcoding please).
-- Vitaly
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