diff options
Diffstat (limited to 'scrub/e2scrub_all.in')
| -rw-r--r-- | scrub/e2scrub_all.in | 132 |
1 files changed, 132 insertions, 0 deletions
diff --git a/scrub/e2scrub_all.in b/scrub/e2scrub_all.in new file mode 100644 index 00000000..9581dc2c --- /dev/null +++ b/scrub/e2scrub_all.in @@ -0,0 +1,132 @@ +#!/bin/bash + +# Copyright (C) 2018 Oracle. All Rights Reserved. +# +# Author: Darrick J. Wong <darrick.wong@oracle.com> +# +# This program is free software; you can redistribute it and/or +# modify it under the terms of the GNU General Public License +# as published by the Free Software Foundation; either version 2 +# of the License, or (at your option) any later version. +# +# This program is distributed in the hope that it would be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, write the Free Software Foundation, +# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. + +scrub_all=0 +conffile="@root_sysconfdir@/e2scrub.conf" + +test -f "${conffile}" && . "${conffile}" + +scrub_args="" + +print_help() { + echo "Usage: $0 [OPTIONS]" + echo " -A: Scrub all ext[234] filesystems even if not mounted." + echo " -r: Remove e2scrub snapshots." + echo " -V: Print version information and exit." +} + +print_version() { + echo "e2scrub_all @E2FSPROGS_VERSION@ (@E2FSPROGS_DATE@)" +} + +exitcode() { + ret="$1" + + # If we're being run as a service, the return code must fit the LSB + # init script action error guidelines, which is to say that we + # compress all errors to 1 ("generic or unspecified error", LSB 5.0 + # section 22.2) and hope the admin will scan the log for what + # actually happened. + + # We have to sleep 2 seconds here because journald uses the pid to + # connect our log messages to the systemd service. This is critical + # for capturing all the log messages if the scrub fails, because the + # fail service uses the service name to gather log messages for the + # error report. + if [ -n "${SERVICE_MODE}" ]; then + test "${ret}" -ne 0 && ret=1 + sleep 2 + fi + + exit "${ret}" +} + +while getopts "ArV" opt; do + case "${opt}" in + "A") scrub_all=1;; + "r") scrub_args="${scrub_args} -r";; + "V") print_version; exitcode 0;; + *) print_help; exitcode 2;; + esac +done +shift "$((OPTIND - 1))" + +# Find scrub targets, make sure we only do this once. +ls_scrub_targets() { + lsblk -o NAME,FSTYPE,MOUNTPOINT -p -P -n | while read vars; do + eval "${vars}" + + # Skip non-ext[234] + case "${FSTYPE}" in + ext[234]) ;; + *) continue;; + esac + + # Skip unmounted filesystems unless -A + if [ "${scrub_all}" -eq 0 ] && [ -z "${MOUNTPOINT}" ]; then + continue; + fi + + # Skip non-lvm devices and lvm snapshots + lvm_vars="$(lvs --nameprefixes -o vg_name,lv_name,lv_role --noheadings "${NAME}" 2> /dev/null)" + test $? -ne 0 && continue + eval "${lvm_vars}" + echo "${LVM2_LV_ROLE}" | grep -q "snapshot" && continue + + if [ -n "${MOUNTPOINT}" ]; then + echo "${MOUNTPOINT}" + else + echo "${NAME}" + fi + done | sort | uniq +} + +# systemd doesn't know to do path escaping on the instance variable we pass +# to the e2scrub service, which breaks things if there is a dash in the path +# name. Therefore, do the path escaping ourselves if needed. +escape_path_for_systemd() { + local path="$1" + + if echo "${path}" | grep -q -- "-"; then + echo "-$(systemd-escape --path "${path}")" + else + echo "${path}" + fi +} + +# Scrub any mounted fs on lvm by creating a snapshot and fscking that. +stdin="$(realpath /dev/stdin)" +ls_scrub_targets | while read tgt; do + # If we're not reaping and systemd is present, try invoking the + # systemd service. + if [ -z "${scrub_args}" ] && type systemctl > /dev/null 2>&1; then + tgt_esc="$(escape_path_for_systemd "${tgt}")" + ${DBG} systemctl start "e2scrub@${tgt_esc}" 2> /dev/null < "${stdin}" + res=$? + if [ "${res}" -eq 0 ] || [ "${res}" -eq 1 ]; then + continue; + fi + fi + + # Otherwise use direct invocation + ${DBG} "@root_sbindir@/e2scrub" ${scrub_args} "${tgt}" < "${stdin}" +done + +exitcode 0 |