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Hurd Development Envirnment Setup

Ref: http://www.gnu.org/software/hurd/contributing.html#index4h2

  • Qemu 2.5.0
  • Host: Arch Linux
  • KVM support

Download Run Hurd on Qemu

wget https://people.debian.org/~sthibault/hurd-i386/debian-hurd.img.tar.gz
tar xvf debian-hurd.img.tar.gz -C .
# rename it as "debian-hurd.img"
qemu-system-i386 -enable-kvm -m 1G  \
-drive cache=writeback,file=debian-hurd.img,format=raw

Build hurd

autoreconf -i && ./configure && make

Build glibc

mkdir build
../glibc/configure --prefix=$HOME/glibc-bin --enable-add-ons=libpthread --enable-pt_chown --disable-nscd CFLAGS=-O2 --build=i586-gnu --disable-multi-arch
make

Attach to Hurd via SSH

openssh-server is pre-installed in the aboved image.

Create a virtual Network Interface Card (NIC) and connect to VLAN0, redirect incoming TCP connections to the host port 22 to the guest port 5555:

qemu-system-i386 -enable-kvm  -m 1G                         \
    -drive cache=writeback,file=debian-hurd.img,format=raw  \
    -net nic -net user,hostfwd=tcp::5555-:22

Then generate a pair of key, copy the public key to the guest using scp.

NOTE: By default, the SSH server denies password-based login for root, so you should

  • set root password
  • add a user
  • config sudoer

NOTE: attributes of .ssh should be 700, authorized_keys should be 0600

Use this command start up hurd and connect to it: (run ./run.sh)

qemu-system-i386 -enable-kvm  -m 1G                         \
    -drive cache=writeback,file=debian-hurd.img,format=raw  \
    -net nic -net user,hostfwd=tcp::5555-:22                \
    -display none & sleep 3 && ssh -p 5555 la@localhost

Solution

Error "Login incorrect"

firstly, try fsck on root file system and other file system.

losetup -f -P ./debian-hurd.img
e2fsck /dev/loop0p1 # maybe
losetup -d /dev/loop0

if not, try boot hurd with kernel parameter "init=/bin/bash",

15:15:01< diegonc> LastAvengers: if you still have the "Login incorrect" message, sometime ago I had to boot with 'init=/bin/bash' in the kernel command-line and run 'dpkg-reconfigure hurd && reboot-hurd' in the shell to fix it (plain reboot didn't seem to work there); I'm not sure if that's still necessary, though
15:17:06< LastAvengers> diegonc: how to pass kernel parameter to hurd?
15:20:03< DusXMT> LastAvengers: The same way as on Linux, 'e' on the Grub entry, add init=/bin/bash to the 'multiboot /path/to/gnumach.gz ....', and ctrl+x (or at least that's what I'd think)

15:35:33< phant0mas> LastAvengers: retry and tell us step by step what you did and what went wrong
15:36:14< phant0mas> similar things may happen all the time, you will have to learn to save the system :-)
15:37:04< LastAvengers> after boot with init=/bin/bash, it say: hd0s1 FILESYSTEM NOT UMOUNTED CLEANLY
15:37:30< phant0mas> LastAvengers: did you get a shell?
15:37:38< LastAvengers> yes.
15:37:42< phant0mas> run fsck -y
15:38:32< phant0mas> wait for fsck to finish and then run fsysopts / --writable
15:38:53< phant0mas> to remount the root partition as rw
15:39:05< phant0mas> and then you can run dpkg-reconfigure hurd
15:39:20< LastAvengers> can't check if fs is mounted due to missing mtab file while determining whether /dev/hd0s1 is mounted.
15:39:31< LastAvengers> ^ fsck -y output
15:40:09< LastAvengers> and Unknown code P 6 while trying to open /dev/hd1s1 <- the image for my /home
15:40:59< braunr> hd0s1
15:43:09< LastAvengers> phant0mas: dpkg-reconfigure completed.
15:43:13< LastAvengers> then reboot?
15:45:41< braunr> yes

16:10:29< LastAvengers> braunr: stop at "start ext2fs: Hurd server bootstarp: ext2fs[device: hd0s1] exec"
16:14:56< braunr> retry, this is a rare race

As described above:

# after get a shell
fsck -y
fsysopts / --writable
mount -o remount,rw /dev/hd0s1 /
dpkg-reconfigure hurd
reboot-hurd

Error "ext2fs: disk_cache_init: Block size 1024 != vm_page_size 4096"

Use mkfs.ext2 -b 4096 to format your image.

External library

10:50:25< teythoon> i tend to do (from my hurd build dir): settrans -a t /usr/bin/env LD_LIBRARY_PATH=$(pwd)/lib trans/hello