Kernel 4.16.1 problems

abduct · Apprentice Joined: 19 Mar 2015 Posts: 215

Hi, I have a few problems since I did a `eix-sync' and compiled a new kernel among other applications.

The two main problems are that

1) In the initramfs I get the errors "No dolvm support listed in /proc/filesystems". This error is not present when booting from 4.15.15. I build my kernel with make oldsilentconfig and applied specific changed that may effect me.

2) When booting 4.16.1 I was constantly trying to login to my user and I am sure I got the password right, but it kept telling me to type in my username again. After a while it finally succeeded only to kick me back out to the login prompt within seconds. I booted 4.15.15 and I had a similar problem but after using ctrl+alt+fX to switch tty's around it finally decided to let me log in and kept me logged in.

All these problems started after a sync and emerge @world on April 8th which pulled in things such as gcc-7.3.0-r1, kernel 4.16.1, re-emerge of clang, llvm, libtool, etc. I followed most of the upgrade guides for these big packages.

Is there a way to try to isolate these problems and changes? I have backups of my old configs if I should say no to all of the new features (I said no to most but a few i added).

I am a bit stumped with this one since my quick google searches didn't bring up many other people having remotly similar problems.

Let me know if you need any specific information.

Thanks for the help.

mikb · Posted: Wed Apr 11, 2018 6:29 am Post subject: Me too, and more detail

I am seeing similar problems. The dolvm message appears spurious - my volumes decrypt normally and lvm is working just fine.
The other problem is rather more annoying, but I can add some further information.

For some strange reason, I have two (2) instances of agetty running on tty1:

depontius · Advocate Joined: 05 May 2004 Posts: 3509

Just for jollies, and to see if I could help, I just built and booted 4.16.1.

I don't share any of your symptoms, neither the "dolvm" error or multiple agettys on tty1.

If it matters, I'm using sddm to login, and I'm not encrypting my drive. There is no "lvm" in /proc/filesystems.
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mikb · Posted: Wed Apr 11, 2018 10:09 pm Post subject:

abduct · Apprentice Joined: 19 Mar 2015 Posts: 215

At least I know i am not the only one having this problem

I too have two TTY (although I am booted into my 4.15.15 kernel and have been using suspend to disk to bypass the frustrations when I grepped for tty).

gentoo_ram · Posted: Thu Apr 12, 2018 11:39 pm Post subject:

If you are using OpenRC, then look in your /etc/inittab file.

If you are using systemd, I'm sorry.

abduct · Apprentice Joined: 19 Mar 2015 Posts: 215

khayyam · I too have two TTY (although I am booted into my 4.15.15 kernel [...]

abduct · Apprentice Joined: 19 Mar 2015 Posts: 215

I have added rootfstype=ext4 to my grub cmd line and rebuilt my config with grub-mkconfig and the initramfs still states

"No dolvm support listed in /proc/filesystems"
"dolvm is not likely to work on this medium"

Although I am booted fine.

As for the double tty1, using ctrl+alt+fN does indeed seem to resolve the problem. It likely crashes, kills, or closes the second tty1. After switching ttys and back I am able to login perfectly fine.

As for rc-status --all here is the results

khayyam · Posted: Sat Apr 14, 2018 1:36 am Post subject:

abduct · Apprentice Joined: 19 Mar 2015 Posts: 215

Yes I am using genkernel for initramfs creation. I've had to modify the genkernel scripts to repair broken hibernation/suspend to disk support though. Genkernel was updated when I started getting that error though.

khayyam · Posted: Sat Apr 14, 2018 12:58 pm Post subject:

@mikb ... can you also confirm you're on ~arch? ... and so =sys-apps/sysvinit-2.89-r1 and =sys-apps/openrc-0.35.5

@abduct ... I would suggest you rollback to =sys-apps/sysvinit-2.88-r9, it looks as though you should be able to do that as =sys-apps/openrc-0.35.5 only depends on >=sys-apps/sysvinit-2.86-r6. When you roll back replace /etc/inittab with the one from 2.86-r6 when you etc-update ... and then reboot, and check the agetty.

Oh, before you do that does openrc still provide /sbin/rc? (because this changed ... the path in inittab for 2.88 is now /sbin/openrc).

If rolling back sysvinit makes no difference can you do the same for openrc ... I guess to the last version you know to not have the getty issue.

best ... khay

abduct · Apprentice Joined: 19 Mar 2015 Posts: 215

@khayyam

I have both binaries on my system and they have different file sizes as per stat

khayyam · Posted: Sun Apr 15, 2018 8:01 pm Post subject:

abduct ...

that all points to =sys-apps/openrc-0.35.5 as being the root cause, its very difficult for me to offer much in the way of help because I've stuck with =sys-apps/openrc-0.12.4, but I suspect that recent versions change how openrc functions, the presence of /sbin/openrc-{init,shutdown} attest to that. The absence of /dev/initctl (which is created by init/sysvinit) is telling, and the fact the shutdown started working again after a re-install, similarly (it probably replaced a sym-link to openrc-shutdown).

If you didn't update /etc/inittab then this will still call 'openrc-run', and not 'rc' ... whether that makes a difference or not I can't say, but inittab was changed at some recent point as mine still has /sbin/rc.

It would have been good to see the output of following prior to you re-installing sysvinit (mikb?) ...

abduct · Apprentice Joined: 19 Mar 2015 Posts: 215

New post for new updates:

I finished building kernel 4.16.2 and the dolvm message has gone away. I am pretty sure that the issue was genkernel 3.5.3.0 since when I pulled in the kernel 4.16.2 yesterday I also pulled in genkernel 3.5.3.2. Previously I was using genkernel 3.5.2.5 which also worked fine. I will monitor this for a bit.

I managed to downgrade to =sys-apps/sysvinit-2.88-r9 and fixed the /dev/initctl issue via symlinking /run/initctl to /dev/initctl for now. The double TTY1 is gone and I was able to login the first try.

Instead agetty is not even running on tty1! Which is fine since I was able to log in without hassle... (this output was taken from within a X environment).

depontius · Advocate Joined: 05 May 2004 Posts: 3509

I weighed in here earlier, as not having the problem. Part of that was that my laptop is not encrypted. Lately I've started thinking about doing that. As a first step, I've attached a "drive toaster", created an LVM container on a partition, etc, and copied my content to it. I can point an entry in my grub menu to load root from the toaster instead of the internal drive.

When I try to boot from the toaster drive, I see the kinds of problems you're discussing here. For a little background, I'm using grub-0.97 and genkernel. I've gone into genkernel.conf and put "YES" on the lvm and cryptsetup items. I added "dolvm" and "init=/linuxrc" to the kernel command line.

First, it doesn't find the root volume at all. I open a shell from grub and run "vgscan", "vgchange -a y", and then I can see and enter the root volume, "/dev/mapper/vg-root".

Second, when it boots, it comes to a text screen, not sddm. The text screen is flickering badly and I can't login. There are spurious characters in the upper-left of the screen. The login problem appears to be that the characters I'm typing in are going to multiple places, including the upper-left corner. They're being scattered, of course it won't work.

I'm running stable with the ~arch kernel:

abduct · Apprentice Joined: 19 Mar 2015 Posts: 215

@depontius here are some resources that may help you:

https://wiki.gentoo.org/wiki/Full_Disk_Encryption_From_Scratch_Simplified (this is what I used to loosly base my FDE off of)

And here are some of my scripts and CLI arguments for booting and compiling with genkernel:

depontius · Advocate Joined: 05 May 2004 Posts: 3509

I've been using the document you reference, as well as a few others.

So far I've been trying to use grub legacy, and I admit that that might be part of my problem. However when I drop to the shell when the booting system can't find my root, I do have lvm commands, so I guess genkernel muxt have put them into my initrd.

I also knew that I might have to move to grub2 for encrypted boot, I was just trying to avoid it. It may be that grub2 is needed even for lvm.

I've switched VTs away, but not away and back. I can give that a try next time I'm at this. The real world has pushed this aside, for the moment. I'll need to be checking your post more carefully when I have time to play with this again.
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mikb · Posted: Mon Apr 30, 2018 7:23 am Post subject:

Do you by any chance have

steveL · Posted: Mon Apr 30, 2018 1:22 pm Post subject:

Hu · Moderator Joined: 06 Mar 2007 Posts: 21591

abduct · Apprentice Joined: 19 Mar 2015 Posts: 215