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tartarus and kpartx #1

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01ba69d
added my changes (KPARTX and KPARTX_PARTITION)
bailong Dec 20, 2010
c3761c0
documentation added
bailong Jan 16, 2011
b9c7a2d
Merge branch 'master' of https://github.com/wertarbyte/tartarus
bailong Feb 13, 2011
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45 changes: 44 additions & 1 deletion bin/tartarus
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Original file line number Diff line number Diff line change
Expand Up @@ -23,7 +23,7 @@ readonly VERSION="0.9.7"
# Tartarus provides a nice wrapper around basic Unix tools such as tar, find
# and curl to provide a seamless backup solution. Instead of relying on single
# usage backup scripts or complicated command lines, B<tartarus> reads its
# configuration from easily manageable configuration files. It can store
# configuration from easily managable configuration files. It can store
# gathered data in regular files, or upload the backup directly (on the fly)
# to an FTP server. For more specific usage scenarios, custom methods can also
# be defined within the config file.
Expand Down Expand Up @@ -126,11 +126,19 @@ cleanup() {
fi

if isEnabled "${CREATE_LVM_SNAPSHOT:-}" && [ -n "${SNAPDEV:-}" ]; then
if isEnabled "${KPARTX:-}"; then
umount $KPARTX_PARTITION || umount "$SNAPSHOT_DIR/$LVM_MOUNT_DIR"
kpartx -dv ${LVM_VOLUME_NAME}_snap
lvremove -f $SNAPDEV
else

# some filesystens (e.g. ntfs3g) appear as /dev/loop* in /proc/mounts,
# so unmounting the snapshot device might fail
umount $SNAPDEV || umount "$SNAPSHOT_DIR/$LVM_MOUNT_DIR"
lvremove -f $SNAPDEV
fi
fi

if [ "$ABORT" -eq "1" ]; then
debug "done"
fi
Expand Down Expand Up @@ -179,6 +187,7 @@ call() {
update_check() {
requireCommand curl awk || return
local VERSION_URL="http://wertarbyte.de/tartarus/upgrade-$VERSION"
VERSION_URL="${VERSION_URL}-deb"

local NEW_VERSION="$(curl --connect-timeout 15 -fs "$VERSION_URL")"
if [ "$?" -ne 0 ]; then
Expand Down Expand Up @@ -306,6 +315,20 @@ DIRECTORY=""
# store /proc or /sys.
STAY_IN_FILESYSTEM="no"
#
#=item KPARTX
#
# Kpartx can be used to set up device mappings for the partitions of any partitioned
# block device. If set to yes, kpartx will map the partitions so the filesystem can
# be accessed
#
# Once set, the specification of KPARTX_PARTITION becomes mandatory.
KPARTX=""
#
#=item KPARTX_PARTITION
#
# This is mandantory if KPARTX is set to yes. This is the name of the mapped partition.
KPARTX_PARTITION=""
#
#=item CREATE_LVM_SNAPSHOT
#
# If this is set to yes, Tartarus will try to freeze the content of the LVM
Expand Down Expand Up @@ -344,6 +367,7 @@ LVM_MOUNT_OPTIONS=""
# value defaults to "200m".
LVM_SNAPSHOT_SIZE="200m"
#
#
#=item ASSEMBLY_METHOD
#
# The method you would like to employ to combine your file system into an
Expand Down Expand Up @@ -606,6 +630,16 @@ if isEnabled "$CREATE_LVM_SNAPSHOT"; then
if ! [ -d "$SNAPSHOT_DIR" ]; then
cleanup 1 "Snapshot directory '$SNAPSHOT_DIR' not found."
fi

# Check if we have to use kpartx
if isEnabled "$KPARTX"; then
if [ -z "$KPARTX_PARTITION" ]; then
cleanup 1 "KPARTX_PARTITION is mandantory when using partx"
fi

requireCommand partx || cleanup 1

fi
fi

constructFilename() {
Expand Down Expand Up @@ -850,9 +884,18 @@ if isEnabled "$CREATE_LVM_SNAPSHOT"; then
# and another hook
hook POST_FREEZE
# mount the new volume

if isEnabled "$KPARTX"; then
mkdir -p "$SNAPSHOT_DIR/$LVM_MOUNT_DIR" || cleanup 1 "Unable to create mountpoint"
kpartx -av ${LVM_VOLUME_NAME}_snap
mount $LVM_MOUNT_OPTIONS "$KPARTX_PARTITION" "$SNAPSHOT_DIR/$LVM_MOUNT_DIR" || cleanup 1 "Unable to mount snapshot"
BASEDIR="$SNAPSHOT_DIR"
else

mkdir -p "$SNAPSHOT_DIR/$LVM_MOUNT_DIR" || cleanup 1 "Unable to create mountpoint"
mount $LVM_MOUNT_OPTIONS "$SNAPDEV" "$SNAPSHOT_DIR/$LVM_MOUNT_DIR" || cleanup 1 "Unable to mount snapshot"
BASEDIR="$SNAPSHOT_DIR"
fi
fi

# Construct excludes for find
Expand Down