All the important bits are there - please test and review :)
Posted: | More posts about gsoc debian hurd |
Finally, more bootlog-pr0n:
start ext2fs: Hurd server bootstrap: ext2fs[device:hd0s1] exec init proc auth INIT: version 2.88 booting Using makefile-style concurrent boot in runlevel S. Activating swap...done. Checking root file system...fsck from util-linux 2.20.1 hd2 : tray open or drive not ready hd2 : tray open or drive not ready hd2 : tray open or drive not ready hd2 : tray open or drive not ready end_request: I/O error, dev 02:00, sector 0 /dev/hd0s1: clean, 44680/181056 files, 292234/723200 blocks done. Activating lvm and md swap...(default pager): Already paging to partition hd0s5! done. Checking file systems...fsck from util-linux 2.20.1 hd2 : tray open or drive not ready hd2 : tray open or drive not ready end_request: I/O error, dev 02:00, sector 0 done. Cleaning up temporary files... /tmp. Mounting local filesystems...done. Activating swapfile swap...(default pager): Already paging to partition hd0s5! done. df: Warning: cannot read table of mounted file systems: No such file or directory Cleaning up temporary files.... Configuring network interfaces...inetutils-ifconfig: invalid arguments ifup: failed to open pid file /run/network/ifup-/dev/eth0.pid: No such file or directory Internet Systems Consortium DHCP Client 4.2.2 Copyright 2004-2011 Internet Systems Consortium. All rights reserved. For info, please visit https://www.isc.org/software/dhcp/ can't create /var/lib/dhcp/dhclient./dev/eth0.leases: No such file or directory Listening on Socket//dev/eth0 Sending on Socket//dev/eth0 DHCPDISCOVER on /dev/eth0 to 255.255.255.255 port 67 interval 8 DHCPREQUEST on /dev/eth0 to 255.255.255.255 port 67 DHCPOFFER from 10.0.2.2 DHCPACK from 10.0.2.2 can't create /var/lib/dhcp/dhclient./dev/eth0.leases: No such file or directory bound to 10.0.2.15 -- renewal in 34744 seconds. done. Cleaning up temporary files.... Setting up X socket directories... /tmp/.X11-unix /tmp/.ICE-unix. INIT: Entering runlevel: 2 Using makefile-style concurrent boot in runlevel 2. Starting enhanced syslogd: rsyslogd. Starting deferred execution scheduler: atd. Starting periodic command scheduler: cron. Starting system message bus: dbusFailed to set socket option"/var/run/dbus/system_bus_socket": Protocol not available. Starting OpenBSD Secure Shell server: sshd. unexpected ACK from keyboard GNU 0.3 (debian) (console) login: root root@debian:~# shutdown -h now Broadcast message from root@debian (console) (Fri Aug 16 20:02:47 2013): The system is going down for system halt NOW! INIT: Switching to runlevel: 0root@debian:~# INIT: Sending processes the TERM signal INIT: Sending processes the KILL signal Using makefile-style concurrent boot in runlevel 0. Stopping deferred execution scheduler: atd. task c10f72a8 deallocating an invalid port 2098928, most probably a bug. Asking all remaining processes to terminate...done. All processes ended within 1 seconds...done. Stopping enhanced syslogd: rsyslogd. Deconfiguring network interfaces...ifdown: failed to open pid file /run/network/ifdown-/dev/eth0.pid: No such file or directory Internet Systems Consortium DHCP Client 4.2.2 Copyright 2004-2011 Internet Systems Consortium. All rights reserved. For info, please visit https://www.isc.org/software/dhcp/ can't create /var/lib/dhcp/dhclient./dev/eth0.leases: No such file or directory Listening on Socket//dev/eth0 Sending on Socket//dev/eth0 /bin/sh: 1: ifconfig: not found done. Deactivating swap...swapoff: /dev/hd0s5: 177152k swap space done. Unmounting weak filesystems...umount: /etc/mtab: Warning: duplicate entry for device /dev/hd0s1 (/dev/cons) umount: could not find entry for: /dev/cons done. Unmounting local filesystems...done. mount: cannot remount /: Device or resource busy Will now halt. init: notifying pfinet of shutdown...init: notifying tmpfs swap of shutdown...init: notifying tmpfs swap of shutdown...init: notifying tmpfs swap of shutdown...init: notifying ext2fs device:hd0s1 of shutdown...init: halting Mach (flags 0x8)... In tight loop: hit ctl-alt-del to reboot
(You might note that df complains about not being able to read the mtab file. That is because it has been built with _PATH_MOUNTED being /var/run/mtab. This will correct itself when the coreutils package is being rebuilt against a patched libc.)
I spent my last two weeks with polishing my patch series, that meant a lot of package rebuilds and that means a lot of waiting (even more so on the Hurd, short version: fakeroot-hurd could be fast but is not yet working properly, fakeroot-tcp is slow) and thus some frustration ;)
Also I had to pay special attention so that the upgraded packages could be installed without accidentally breaking anything in the process. Making sysvinit pid 1 is surprisingly tricky in this regard since it breaks the ABI and requires a libc fix that also worked with the current Hurd servers.
Here are the patches:
- The mtab translator (v4) provides /proc/mounts: http://lists.gnu.org/archive/html/bug-hurd/2013-07/msg00259.html
- When I wrote umount I thought I implemented all the flags used by the initscripts package. Turns out I forgot -d. umount.patch (v2): http://lists.gnu.org/archive/html/bug-hurd/2013-08/msg00018.html
- Make sysvinit pid 1 (sysvinit kinda requires that), fix killall5 (that was freezing the system before) (v2): http://lists.gnu.org/archive/html/bug-hurd/2013-08/msg00020.html
- Making sysvinit pid 1 breaks the ABI, since the glibc assumes /hurd/init to have pid 1: http://lists.gnu.org/archive/html/bug-hurd/2013-08/msg00046.html http://sourceware.org/ml/libc-alpha/2013-08/msg00205.html
- So now killall5 is not freezing the system anymore (actually it froze all processes but most importantly the procfs translator providing /proc and it then tried to walk over /proc which obviously blocked killall5 itself). Cool. But then it looks into /proc/*/stat for the fields start_code and end_code. So I dug into the exec server where the ELF decoding happens and handed this to the proc server, but the procfs translator has to make use of this: http://lists.gnu.org/archive/html/bug-hurd/2013-08/msg00017.html
- Patch series for the sysvinit package (v2). This contains a runsystem.sysv that can be enabled using update-alternatives --config runsystem and several small fixes: http://lists.gnu.org/archive/html/bug-hurd/2013-08/msg00038.html
So I had some spare time on my hand while waiting for numerous package rebuilds and I took this as an opportunity to read papers about Mach and to familiarize myself with mig, the Mach Interface Generator. While I have used it in the past, I had not yet looked at its implementation. And I had to patch the exec server, and there was both code implementing a questionable feature (on-demand unzipping of binaries) and code that was not even compiled (courtesy of the preprocessor) and had probably bit-rot by now. So I figured I could spend my time doing some cleanups:
- Cleanups for the exec server: http://lists.gnu.org/archive/html/bug-hurd/2013-08/msg00049.html
- Cleanups for mig: http://lists.gnu.org/archive/html/bug-hurd/2013-08/msg00055.html
I have rebuild all the necessary packages and uploaded them into an apt repository:
deb http://teythoon.cryptobitch.de/gsoc/heap/debian unstable main
Please use unstable for now. Also make sure that you have a recovery plan for your Debian/Hurd installation if anything goes wrong. For your convenience there's a seed tarball containing packages with the appropriate sources.list.d snippets and the repository key:
If you want to switch to the new runsystem.sysv, do:
# update-alternatives --config runsystem
Whenever you switch runsystems, please use reboot-hurd to reboot the system. This is the most robust way.
procfs hardcodes the default kernel pid to 2. This breaks /proc/uptime and any program relying on it, most notably top and friends. Until this is properly fixed, you can do:
# settrans -apfg /proc /hurd/procfs -c -k 3
The mtab translator should probably try to filter out non-filesystem translators. df complains loudly about /dev/cons for example.
Next week I will address the network related issues. By now they are the source of most of the error messages in the bootlog.