2010/12/1 Gerardo Exequiel Pozzi <[email protected]>: > 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 <[email protected]> > --- > 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<<HELPEOF > + This hook loads the necessary modules for boot via loop device. > +HELPEOF > +} > diff --git a/configs/syslinux-iso/mkinitcpio.conf > b/configs/syslinux-iso/mkinitcpio.conf > index 15097c0..f5f8c79 100644 > --- a/configs/syslinux-iso/mkinitcpio.conf > +++ b/configs/syslinux-iso/mkinitcpio.conf > @@ -2,5 +2,5 @@ > MODULES="" > BINARIES="" > FILES="" > -HOOKS="base udev memdisk archiso archiso_pxe_nbd pata scsi sata usb fw > pcmcia filesystems usbinput" > +HOOKS="base udev memdisk archiso archiso_pxe_nbd archiso_loop_mnt pata scsi > sata usb fw pcmcia filesystems usbinput" > COMPRESSION="lzma" > -- > 1.7.3.2 > >
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.
