3 : ${vgtag=@backup} ${vgprefix=vg-backup-}
4 : ${mntbkpdir=/mnt/bkp}
5 : ${STOREDIR=$mntbkpdir/store} ${METADIR=$mntbkpdir/meta}
6 : ${RANDOM=/dev/random}
10 *) echo >&2 "usage: $0 TAG PV" ;;
14 vgcreate
--addtag
$vgtag $vg $pv
16 lvcreate
-L64M
-nmeta
$vg
17 mkfs
-text3
-Lmeta
/dev
/$vg/meta
18 mount
/dev
/$vg/meta
$METADIR
20 echo $tag >$METADIR/volume
21 dd if=$RANDOM bs
=1 count
=512 |
22 cryptop encrypt backup
>$METADIR/crypt.blob
24 lvcreate
-l100
%FREE
-ncrypt
$vg
25 cryptop decrypt backup
<$METADIR/crypt.blob |
26 cryptsetup luksFormat \
27 --cipher
=twofish-xts-benbi
:sha256 \
28 --hash=sha256
--key-size
=256 \
31 cryptop decrypt backup
<$METADIR/crypt.blob |
32 cryptsetup luksOpen
--key-file
=- /dev
/$vg/crypt cbackup
34 mkfs
-text3
-Lbackup
/dev
/mapper
/cbackup
36 mount
/dev
/mapper
/cbackup
$STOREDIR
37 touch $STOREDIR/.rsync-backup-store