| index : archiso32 | |
| Archlinux32 iso tools | gitolite user |
| summaryrefslogtreecommitdiff |
| -rw-r--r-- | README | 10 | ||||
| -rw-r--r-- | archiso/hooks/archiso | 57 |
@@ -35,6 +35,16 @@ INDEX performs a self-test of all files inside ${install_dir}, and continue booting if ok. Default: (unset) +* cow_label= Set the filesystem label where COW (dm-snapshot) + files must be stored. + Default: (unset) +* cow_device= Set the device node where COW (dm-snapshot) files + must be stored. + Default: (unset) or "/dev/disk/by-label/${cow_label}" +* cow_directory= Set a directory inside ${cow_device}. + Default: "/persistent_${archisolabel}/${arch}" +* cow_persistent= Set if snapshots are persistent "P" or non-persistent "N". + Default: "N" (if no ${cow_device} is used) otherwise "P". * cowspace_size= Set the size of tmpfs /cowspace. This space is used for Copy-On-Write files of dm-snapshot. (directory not visible outside initramfs) diff --git a/archiso/hooks/archiso b/archiso/hooks/archiso index 1ef6e95..4b512ef 100644 --- a/archiso/hooks/archiso +++ b/archiso/hooks/archiso @@ -38,11 +38,27 @@ _mnt_fs() { ro_dev_size=$(blockdev --getsz ${ro_dev}) ro_dev_fs_type=$(blkid -o value -s TYPE -p ${ro_dev} 2> /dev/null) - dd of="/cowspace/${img_name}.cow" count=0 seek=${ro_dev_size} &> /dev/null + + if [[ "${cow_persistent}" == "P" ]]; then + if [[ -f "/cowspace/${cow_directory}/${img_name}.cow" ]]; then + msg ":: Found '/cowspace/${cow_directory}/${img_name}.cow', using as persistent." + else + msg ":: Creating '/cowspace/${cow_directory}/${img_name}.cow' as persistent." + dd of="/cowspace/${cow_directory}/${img_name}.cow" count=0 seek=${ro_dev_size} &> /dev/null + fi + else + if [[ -f "/cowspace/${cow_directory}/${img_name}.cow" ]]; then + msg ":: Found '/cowspace/${cow_directory}/${img_name}.cow' but non-persistent requested, removing." + rm -f "/cowspace/${cow_directory}/${img_name}.cow" + fi + msg ":: Creating '/cowspace/${cow_directory}/${img_name}.cow' as non-persistent." + dd of="/cowspace/${cow_directory}/${img_name}.cow" count=0 seek=${ro_dev_size} &> /dev/null + fi + _next_loop_dev - rw_dev=$(_make_loop_dev "/cowspace/${img_name}.cow") + rw_dev=$(_make_loop_dev "/cowspace/${cow_directory}/${img_name}.cow") - echo "0 ${ro_dev_size} snapshot ${ro_dev} ${rw_dev} N 8" | dmsetup create ${dm_snap_name} + echo "0 ${ro_dev_size} snapshot ${ro_dev} ${rw_dev} ${cow_persistent} 8" | dmsetup create ${dm_snap_name} msg ":: Mounting '/dev/mapper/${dm_snap_name}' (${ro_dev_fs_type}) to '${mnt}'" if ! mount -t "${ro_dev_fs_type}" "/dev/mapper/${dm_snap_name}" "${mnt}" ; then @@ -132,11 +148,24 @@ run_hook() { [[ -z "${archisobasedir}" ]] && archisobasedir="arch" [[ -z "${dm_snap_prefix}" ]] && dm_snap_prefix="arch" [[ -z "${archisodevice}" ]] && archisodevice="/dev/disk/by-label/${archisolabel}" + if [[ -z "${aitab}" ]]; then aitab="/bootmnt/${archisobasedir}/aitab" else aitab="/bootmnt/${aitab}" fi + + if [[ -n "${cow_label}" ]]; then + cow_device="/dev/disk/by-label/${cow_label}" + [[ -z "${cow_persistent}" ]] && cow_persistent="P" + elif [[ -n "${cow_device}" ]]; then + [[ -z "${cow_persistent}" ]] && cow_persistent="P" + else + cow_persistent="N" + fi + + [[ -z "${cow_directory}" ]] && cow_directory="persistent_${archisolabel}/${arch}" + # set mount handler for archiso mount_handler="archiso_mount_handler" } @@ -149,7 +178,12 @@ archiso_mount_handler() { _init_loop_dev - _mnt_dev "${archisodevice}" "/bootmnt" "-r" + if [[ "${archisodevice}" -ef "${cow_device}" ]]; then + _mnt_dev "${archisodevice}" "/bootmnt" + else + _mnt_dev "${archisodevice}" "/bootmnt" "-r" + fi + if [[ ! -f "${aitab}" ]]; then echo "ERROR: '${aitab}' file does not exist." echo " Falling back to interactive prompt" @@ -174,14 +208,17 @@ archiso_mount_handler() { fi if [[ "${copytoram}" == "y" ]]; then - msg -n ":: Mounting /copytoram (tmpfs) filesystem, size=${copytoram_size}..." + msg ":: Mounting /copytoram (tmpfs) filesystem, size=${copytoram_size}" mount -t tmpfs -o "size=${copytoram_size}",mode=0755 copytoram /copytoram - msg "done." fi - msg -n ":: Mounting /cowspace (tmpfs) filesystem, size=${cowspace_size}..." - mount -t tmpfs -o "size=${cowspace_size}",mode=0755 cowspace /cowspace - msg "done." + if [[ -n "${cow_device}" ]]; then + _mnt_dev "${cow_device}" "/cowspace" + else + msg ":: Mounting /cowspace (tmpfs) filesystem, size=${cowspace_size}..." + mount -t tmpfs -o "size=${cowspace_size}",mode=0755 cowspace /cowspace + fi + mkdir -p "/cowspace/${cow_directory}" local aitab_img aitab_mnt aitab_arch aitab_sfs_comp aitab_fs_type aitab_fs_size while read aitab_img aitab_mnt aitab_arch aitab_sfs_comp aitab_fs_type aitab_fs_size; do @@ -202,7 +239,7 @@ archiso_mount_handler() { if [[ "${copytoram}" == "y" ]]; then umount /bootmnt else - mkdir "${newroot}/bootmnt" + mkdir -p "${newroot}/bootmnt" mount --bind /bootmnt "${newroot}/bootmnt" fi } |