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Allow migration ov LVM-backed VMs #6256

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Allow migration ov LVM-backed VMs #6256

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19 changes: 14 additions & 5 deletions src/tm_mad/fs_lvm_ssh/mv
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Original file line number Diff line number Diff line change
Expand Up @@ -110,19 +110,23 @@ EOF
fi

# copy volume between datastores
if [ "${SRC_PATH}" != "${DST_PATH}" ]; then
if [ "${SRC_PATH}" != "${DST_PATH}" ] || [ "${SRC_HOST}" != "${DST_HOST}" ]; then
# create new volume
CREATE_CMD=$(cat <<EOF
set -e -o pipefail
${SYNC}
${SUDO} ${LVSCAN}
SIZE=\$(${SUDO} ${LVS} --noheadings --units B -o lv_size "${SRC_DEV}" | tr -d '[:blank:]')
${SUDO} ${LVCREATE} --wipesignatures n -L"\${SIZE}" -n "${LV_NAME}" "${DST_VG_NAME}"
if [ "${SRC_HOST}" != "${DST_HOST}" ]; then
$SSH -n $DST_HOST ${SUDO} ${LVCREATE} --wipesignatures n -L"\${SIZE}" -n "${LV_NAME}" "${DST_VG_NAME}"
else
${SUDO} ${LVCREATE} --wipesignatures n -L"\${SIZE}" -n "${LV_NAME}" "${DST_VG_NAME}"
fi
EOF
)

LOCK="tm-fs_lvm-${DST_DS_SYS_ID}.lock"
exclusive "${LOCK}" 120 ssh_exec_and_log "${DST_HOST}" "${CREATE_CMD}" \
exclusive "${LOCK}" 120 ssh_exec_and_log "${SRC_HOST}" "${CREATE_CMD}" \
"Error creating LV named ${LV_NAME}"

# activate src volume (on DST)
Expand All @@ -138,8 +142,13 @@ EOF
"Error deactivating disk ${SRC_PATH}"

# copy volume data
ssh_exec_and_log "$DST_HOST" \
"${DD} if=${SRC_DEV} of=${DST_DEV} bs=${DD_BLOCK_SIZE:-64k}" \
if [ "${SRC_HOST}" != "${DST_HOST}" ]; then
COPY_CMD="$SSH -n $SRC_HOST \\"${DD} if=${SRC_DEV} of=- bs=${DD_BLOCK_SIZE:-64k} 2> /dev/null\\" | ${DD} if=- of=${DST_DEV}"
else
COPY_CMD="${DD} if=${SRC_DEV} of=${DST_DEV} bs=${DD_BLOCK_SIZE:-64k}"
fi
LOCK="tm-fs_lvm-${SRC_DS_SYS_ID}.lock"
exclusive "${LOCK}" 7200 ssh_exec_and_log "${DST_HOST}" "${COPY_CMD}" \
"Error copying ${SRC} to ${DST}"

# delete old volume and update device symlinks
Expand Down