1 # The name of the LVM archive to get data from
2 ARCHIVE=/etc/lvm/archive/xenvg_00685.vg
4 # Extract the first block of an lv to a file named part-$lv
7 offset=$(grep -A16 $'\t'$lvname $ARCHIVE | grep pv0 | cut -f 2 -d ,);
8 if [ -z "$offset" ]; then echo "WARNING: LV not found";
10 echo "Extracting $lvname from offset $offset"
11 dd if=/dev/mapper/36090a028407d6e2b2589a45cdb971489 of=part-$lvname bs=1M skip=$(( $offset * 8192 + 384 )) bs=512 count=1;
15 # Generate a dd command to copy the lv data to /dev/xenvg/$lv
18 offset=$(grep -A16 $'\t'$lvname $ARCHIVE | grep pv0 | cut -f 2 -d ,);
19 length=$(( $(grep -A16 $'\t'$lvname $ARCHIVE | grep extent_count | cut -f 2 -d = | cut -f 1 -d '#') ));
20 if [ -z "$offset" ]; then echo "# WARNING: LV $lvname not found";
22 echo "#Extracting $lvname from offset $offset with length $length"
23 echo dd if=/dev/mapper/36090a028407d6e2b2589a45cdb971489 of=/dev/xenvg/$lvname bs=1M skip=$(( $offset * 8192 + 384 )) ibs=512 obs=4194304 count=$length