[gentoo-user] Shutdown pauses partway with Give root password
Resending ... anyone have a clue as to why the Give root password for maintenance ... prompt would come up occasionally at shutdown time? Well, this is weird. We've all seen Give root password for maintenance (or type Control-D to continue):, usually after an unclean shutdown. I'm getting it on shutdown itself. I've never even heard of this, and searching google I haven't found any reference to it. It isn't happening every time - it'll go 2 or 3 or 6 (but certainly not 4 or 5 :b) times with clean predictable shutdowns. I can't tell that anything is different in the times I shutdown fails - there aren't any symptoms of any misbehaviour until the message itself. This is a home theatre PC running MythTV. Frontend only, so there are no fancy drivers in the system, just video (nvidia 8756 driver), sound (snd_hda_intel), and lirc with streamzap. System was build from scratch for this purpose, recently, so it is pretty up to date. P4 with hyperthreading. Normally runs with no keyboard or mouse or VGA, only an SVIDEO-out from an NVidia card. BIOS has obviously been set to ignore post errors given the lack of keyboard. Myth running or not running is irrelevant, I've seen the shutdown problem in both situations. I've also seen the problem whether shutting down with a quick press to the power button, or using ssh to run a shutdown command. Here's a sequence: - press power button - this is presumably caught by acpid, which turns it into an init 0 command - hdd lights blink, eventually X is stopped - when X stops, that initial login prompt that came out before X started is now displayed again, and right there I get the Give root password ... prompt. Sometimes the svideo-out console hasn't been restored so I can't see any of this, it is only on a connected monitor (if there is a connected monitor). Usually the svideo-out console is restored on X shutdown, so this does in fact display. After this happened a few times and didn't seem to be going away on its own :) I grumbled, dug up a keyboard and plugged it in, entered the root password. The log shows ntpd, sshd and syslog-ng shutdowns. There are no messages following the syslog-ng shutdown. :) ifconfig returns nothing. runlevel says 3 0 rc-status exhibits poor grammar * Could not local current runlevel in /var/lib/init.d/softlevel * Assuming current runlevel is 'single' Sure enough, there is no softlevel file at this point in a partway shutdown system. df shows local partitions (/, /var, /usr) still mounted, and the sole NFS mount has been taken down. local partitions are all ext2, no lvm or anything fancy. kernel is 2.6.16-gentoo-r3 System is vanilla, except for ~x86 keywords on nvidia-kernel and nvidia-driver to get the recent 8756 versions. Any suggestions on how to further debug? Or suggestions as to what may be going on? Thanks, glen -- gentoo-user@gentoo.org mailing list
Re: [gentoo-user] Shutdown pauses partway with Give root password
Hi, On Tue, 09 May 2006 07:20:57 -0700 glen martin [EMAIL PROTECTED] wrote: Resending ... anyone have a clue as to why the Give root password for maintenance ... prompt would come up occasionally at shutdown time? That's sulogin. Did you mess up your /etc/inittab (like uncommenting that line referring to sulogin)? But I rather guess its an unclean umount and sulogin is spawned from /etc/init.d/halt.sh (l.189). Maybe you can cat your /proc/mounts next time you're in that single-user mode? It might make things more clear... -hwh -- gentoo-user@gentoo.org mailing list
Re: [gentoo-user] Shutdown pauses partway with Give root password
Hans-Werner Hilse wrote: Hi, On Tue, 09 May 2006 07:20:57 -0700 glen martin [EMAIL PROTECTED] wrote: Resending ... anyone have a clue as to why the Give root password for maintenance ... prompt would come up occasionally at shutdown time? That's sulogin. Did you mess up your /etc/inittab (like uncommenting that line referring to sulogin)? Nope, I don't recall ever changing that file on this system, and checking I find that this line is still commented. Though that would probably have been a problem. :) But I rather guess its an unclean umount and sulogin is spawned from /etc/init.d/halt.sh (l.189). Possibly. Looking at that file it seems as if there's a 10 second(?) timeout on sulogin spawned from halt.sh. This one doesn't go away in any reasonable period of time. Also it looks as if there should be some messages about remounting and such before that sulogin would spawn, and I don't see such messages (presuming they should show up on this console). If it is starting from halt.sh, is there any chance this could be a race condition thing, in which some processes aren't fully shut down yet when halt tries to umount? Maybe you can cat your /proc/mounts next time you're in that single-user mode? It might make things more clear... I'll try this. Thanks for the suggestions, glen -- gentoo-user@gentoo.org mailing list
Re: [gentoo-user] Shutdown pauses partway with Give root password
Hans-Werner Hilse wrote: Maybe you can cat your /proc/mounts next time you're in that single-user mode? It might make things more clear... 3 power cycles later I duplicated the problem. Here is /proc/mounts, transcribed by hand. There is nothing obvious wrong here (to me) except that the filesystems are still rw. /proc/mounts: rootfs / rootfs rw 0 0 /dev/root / ext2 rw,noatime,nogrpid 0 0 proc /proc proc rw 0 0 sysfs /sys sysfs rw 0 0 udev /dev tmpfs rw,nosuid 0 0 devpts /dev/pts devpts rw 0 0 /dev/hda6 /usr ext2 rw,noatime,nogrpid 0 0 /dev/hda7 /var ext2 rw,noatime,nogrpid 0 0 shm /dev/shm tmpfs rw,nosuid,nodev,noexec 0 0 usbfs /proc/bus/usb usbfs rw 0 0 At this point, I manually remounted the 3 local partitions ro mount -n -o remount,ro / etc which went cleanly, and /proc/mounts now shows them ro. Is there any chance this could be a race condition thing, in which some processes aren't fully shut down yet when halt.sh tries to umount or remount? But they're all shut down now (a couple of minutes later) so the remounts go cleanly? Finally, after remounting the partitions (above), I pressed Ctrl-D to kill the sulogin shell, and the machine rebooted. It didn't power off, as I might have expected. glen -- gentoo-user@gentoo.org mailing list
