I can confirm that the following statement in https://help.ubuntu.com/community/SwapFaq#Why_do_I_need_swap.3F is wrong:
> The hibernation implementation currently used in Ubuntu, swsusp, needs a swap or suspend partition. It cannot use a swap file on an active file system. In fact, swsusp supports offsets just fine, and so does initramfs-tools - mostly. The only thing blocking hibernation to a swap file from working is that check in /usr/share/initramfs-tools/scripts/local- premount/resume script. It calls wait-for-root which returns "ext4" because no offset has been passed in. So the script will just assume that no hibernation occurred and continue without resuming. While I opted for simply removing the check, I strongly suspect that Ryo's patch will fix the issue just as well. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to initramfs-tools in Ubuntu. https://bugs.launchpad.net/bugs/1644975 Title: Resume from disk (swapfile) fails Status in initramfs-tools package in Ubuntu: Confirmed Bug description: Well, hibernation with swap file doesn't work while hibernation with swap partition works perfectly fine with the exactly same configuration and hardware. The reason is that when resuming from swap file, initramfs script can't correctly detect the machine are hibernated from the last shut down. And I investigated the issue and found this patch solved https://bugs.launchpad.net/ubuntu/+source/initramfs- tools/+bug/554009/+attachment/1366060/+files/resume.patch) for the hibernate to work. And it isn't applied to the package. I'd like to help this is really applied to the official package. In short, my setup is swapfile inside the system filesystem (LUKS + LVM2 + ext4). Also, I roughly followed this tutorial to prepare this configurartion that: https://ubuntuforums.org/showthread.php?t=1042946 I've opening this bug because the original bug report is closed and getting no response... To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/initramfs-tools/+bug/1644975/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
