2010/12/7 Gerardo Exequiel Pozzi :

On 12/07/2010 01:43 AM, Baurzhan Muftakhidinov wrote:

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2010/12/1 Gerardo Exequiel Pozzi:

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Add two parameters:

img_dev=/dev/sdNM   where /dev/sdNM is the device where .iso is located. img_loop=/path/to/arch.iso   where /path/to/arch.iso is the full path of the .iso in the device img_dev.

Original idea from Baurzhan Muftakhidinov.

Signed-off-by: Gerardo Exequiel Pozzi ---  archiso/Makefile                     |    2 ++  archiso/hooks/archiso_loop_mnt       |   33 +++++++++++++++++++++++++++++++++  archiso/install/archiso_loop_mnt     |   18 ++++++++++++++++++  configs/syslinux-iso/mkinitcpio.conf |    2 +-  4 files changed, 54 insertions(+), 1 deletions(-)  create mode 100644 archiso/hooks/archiso_loop_mnt  create mode 100644 archiso/install/archiso_loop_mnt

diff --git a/archiso/Makefile b/archiso/Makefile index 688eb1b..93d68af 100644 --- a/archiso/Makefile +++ b/archiso/Makefile @@ -10,6 +10,8 @@ install: all        install -D -m 644 install/archiso $(DESTDIR)/lib/initcpio/install/archiso        install -D -m 644 hooks/archiso_pxe_nbd $(DESTDIR)/lib/initcpio/hooks/archiso_pxe_nbd        install -D -m 644 install/archiso_pxe_nbd $(DESTDIR)/lib/initcpio/install/archiso_pxe_nbd +       install -D -m 644 hooks/archiso_loop_mnt $(DESTDIR)/lib/initcpio/hooks/archiso_loop_mnt +       install -D -m 644 install/archiso_loop_mnt $(DESTDIR)/lib/initcpio/install/archiso_loop_mnt        # install docs and examples        install -d -m 755 $(DESTDIR)/usr/share/archiso/        cp -r ../configs $(DESTDIR)/usr/share/archiso/configs diff --git a/archiso/hooks/archiso_loop_mnt b/archiso/hooks/archiso_loop_mnt new file mode 100644 index 0000000..0d5eba7 --- /dev/null +++ b/archiso/hooks/archiso_loop_mnt @@ -0,0 +1,33 @@ +# vim: set ft=sh: + +run_hook () { +    if [ -n "${img_dev}" ]&&  [ -n "${img_loop}" ]; then +        mount_handler="archiso_loop_mount_handler" +    fi +} + +archiso_loop_mount_handler () { +    newroot="${1}" + +    while [ ! -b "${img_dev}" ]; do +        sleep 1 +    done + +    msg "::: Setup a loop device from ${img_loop} located at device ${img_dev}" +    FSTYPE=$(blkid -o value -s TYPE -p ${img_dev} 2>  /dev/null) +    if [ -n "${FSTYPE}" ]; then +        if mount -r -t "${FSTYPE}" ${img_dev} /img_dev>  /dev/null 2>&1; then +            _dev_loop=$(losetup -f) +            losetup ${_dev_loop} /img_dev/${img_loop} +        fi +    fi + +    archiso_mount_handler ${newroot} + +    if [ "${copytoram}" = "y" ]; then +        msg "::: Deataching loop device ${_dev_loop}" +        losetup -d ${_dev_loop} +        msg "::: Unmounting ${img_dev}" +        umount ${img_dev} +    fi +} diff --git a/archiso/install/archiso_loop_mnt b/archiso/install/archiso_loop_mnt new file mode 100644 index 0000000..c0d21a6 --- /dev/null +++ b/archiso/install/archiso_loop_mnt @@ -0,0 +1,18 @@ +# vim: set ft=sh: + +install () +{ +    MODULES="" + +    BINARIES="" +    FILES="" +    add_dir /img_dev +    SCRIPT="archiso_loop_mnt" +} + +help () +{ +cat<

Hi

This method does not work for me. I used Qemu to test it.

The boot process hangs at 'Waiting 30 seconds for device /dev/disk/by-name/' Thats it. Which device should poll the archiso_mount_handler function? Is it USB media, or ISO image?

Normal boot process as 'qemu -cdrom arch.iso' works fine.

how you started qemu?

should be something like:

qemu-kvm -m 512 -kernel vmlinuz26 -initrd archiso.img -append "archisolabel=ARCH_201012 img_dev=/dev/sda1 img_loop=/arch.iso" -hda arch.img

where arch.img has one or more partitions with supported filesystem, and inside there is an "arch.iso" file.

-- Gerardo Exequiel Pozzi \cos^2\alpha + \sin^2\alpha = 1

Thanks, Gerardo, it helped I forgot about 'archisolabel=ARCH_201012' parameter ;) Now it works as it should.