Description of problem: When resuming from hibernate, dracut (or whatever is involved) seems not to recognize or simply ignore the image on the swap partition. It boots as if I had not hibernated. With kernel-3.4.6-2.fc17.x86_64 it works perfectly. Could it also that something went wrong on creating the initrd? Hardware is a Thinkpad T430 laptop with Samsung SSD which hosts system and swap. There is an additional hard drive in the ultra bay. All disks are encrypted and in /etc/crypttab. For the root partition I have added the "discard" flag. It is not set for the swap partition. Version-Release number of selected component (if applicable): kernel-3.5.0-2.fc17.x86_64 How reproducible: Always Steps to Reproduce: 1. Boot new kernel 2. hibernate 3. wakeup Actual results: Does a fresh boot Expected results: Should resume from swap partition. Additional info: kernel-3.4.6-2.fc17.x86_64 works
Reassigning to dracut, I'm not certain but I suspect where this should be handled. Maybe it's only grub2, please re-assign if it should go there. Version: dracut-018-96.git20120724.fc17.noarch I was able to fix the problem by adding "resume=/dev/mapper/luks-..." to the GRUB_CMDLINE_LINUX in /etc/default/grub, with the device being my encrypted swap device. Without this, I would always see the following in my boot logs: swapon: /dev/mapper/luks-...: software suspend data detected. Rewriting the swap signature. I have added the entry, die grub2-mkconfig and rebooted. Now resume is working again as expected. Looking around for a solution it turned out it might make a difference wether LVM is used or not. On my system, I'm NOT using LVM. If someone could find a more permanent fix, e.g. that the tools handle this properly, this would be highly appreciated! If you need any further details please let me know.
(In reply to comment #1) > Reassigning to dracut, I'm not certain but I suspect where this should be > handled. Maybe it's only grub2, please re-assign if it should go there. > Version: dracut-018-96.git20120724.fc17.noarch > > I was able to fix the problem by adding "resume=/dev/mapper/luks-..." to the > GRUB_CMDLINE_LINUX in /etc/default/grub, with the device being my encrypted > swap device. Without this, I would always see the following in my boot logs: > > swapon: /dev/mapper/luks-...: software suspend data detected. Rewriting the > swap signature. > > I have added the entry, die grub2-mkconfig and rebooted. Now resume is > working again as expected. Looking around for a solution it turned out it > might make a difference wether LVM is used or not. On my system, I'm NOT > using LVM. > > If someone could find a more permanent fix, e.g. that the tools handle this > properly, this would be highly appreciated! If you need any further details > please let me know. if swap is encrypted, you either have to specify "resume=" or "rd.luks.uuid=..." Either parameter should be set by anaconda, to let hibernate work.
Ah, that might point to the problem. There is a rd.luks.uuid. But I have added another one later for a hard drive that is in the bay slot of my laptop. So maybe it confuses the IDs? That's probably also why adding "resume=..." fixed it, because it solved the ambiguity. Did I do something wrong in adding the additional parameter? Or should dracut try harder?
(In reply to comment #3) > Ah, that might point to the problem. There is a rd.luks.uuid. But I have > added another one later for a hard drive that is in the bay slot of my > laptop. So maybe it confuses the IDs? That's probably also why adding > "resume=..." fixed it, because it solved the ambiguity. > > Did I do something wrong in adding the additional parameter? Or should > dracut try harder? if you have the correct rd.luks.uuid for the swap, then it should work without "resume"
(In reply to comment #4) > if you have the correct rd.luks.uuid for the swap, then it should work > without "resume" Nope, does not work. The swap uuid was generated by anaconda and I did not modify it. It's the one with the "luks-" prefix and it is listed *after* the one for the drive in the bay. Resume uses it with the "/dev/mapper" prefix.
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