# Describe multipath devices while read dm_name junk ; do if [ ! -e /dev/mapper/$dm_name ] ; then Log "Did not find multipath device $dm_name in the expected location." continue fi # follow symlinks to find the real device dev_name=$(readlink -f /dev/mapper/$dm_name) # we try to find the sysfs name name=$(get_sysfs_name $dev_name) [[ -e /sys/block/$name ]] LogIfError "Did not find sysfs name for device $dm_name (/sys/block/$name)" dm_size=$(get_disk_size $name) test "$dm_size" LogIfError "Failed to get size of $name with get_disk_size" slaves="" for slave in /sys/block/$name/slaves/* ; do slaves="$slaves$(get_device_name ${slave##*/})," done dm_disktype=$(parted -s $dev_name print | grep -E "Partition Table|Disk label" | cut -d ":" -f "2" | tr -d " ") echo "# Multipath /dev/mapper/$dm_name" echo "# Format: multipath " echo "multipath /dev/mapper/$dm_name $dm_size $dm_disktype ${slaves%,}" >> $DISKLAYOUT_FILE extract_partitions "/dev/mapper/$dm_name" >> $DISKLAYOUT_FILE done < <( dmsetup ls --target multipath ) if grep -q ^multipath $DISKLAYOUT_FILE ; then # See REQUIRED_PROGS below regarding what is actually required. # TODO: It seems this code here is a duplicate of what is done in prep/GNU/Linux/240_include_multipath_tools.sh # but (in contrast to here) the actual code in 240_include_multipath_tools.sh is only run if BOOT_OVER_SAN is true: PROGS+=( multipath kpartx multipathd mpathconf ) COPY_AS_IS+=( /etc/multipath.conf /etc/multipath/* /lib*/multipath ) # depending to the linux distro and arch, libaio can be located in different dir. (ex: /lib/powerpc64le-linux-gnu) for libdir in $(ldconfig -p | awk '/libaio.so/ { print $NF }' | xargs -n1 dirname | sort -u); do libaio2add="$libaio2add $libdir/libaio*" done LIBS+=( $libaio2add ) fi # multipath is required in the recovery system if disklayout.conf contains at least one 'multipath' entry # see layout/prepare/GNU/Linux/210_load_multipath.sh which programs will be run during "rear recover" in any case # e.g. mpathconf is not called in any case and multipathd is only used when $list_mpath_device is true # cf. https://github.com/rear/rear/issues/1963 grep -q '^multipath ' $DISKLAYOUT_FILE && REQUIRED_PROGS+=( multipath ) || true