# along with this program; if not, write the Free Software Foundation,
# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
+PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
+
+if (( $EUID != 0 )); then
+ echo "e2scrub_all must be run as root"
+ exit 1
+fi
+
+periodic_e2scrub=0
scrub_all=0
+snap_size_mb=256
+reap=0
conffile="@root_sysconfdir@/e2scrub.conf"
test -f "${conffile}" && . "${conffile}"
print_help() {
echo "Usage: $0 [OPTIONS]"
- echo " -A: Scrub all ext[234] filesystems even if not mounted."
+ echo " -n: Show what commands e2scrub_all would execute."
echo " -r: Remove e2scrub snapshots."
+ echo " -A: Scrub all ext[234] filesystems even if not mounted."
echo " -V: Print version information and exit."
}
# section 22.2) and hope the admin will scan the log for what
# actually happened.
- # We have to sleep 2 seconds here because journald uses the pid to
- # connect our log messages to the systemd service. This is critical
- # for capturing all the log messages if the scrub fails, because the
- # fail service uses the service name to gather log messages for the
- # error report.
- if [ -n "${SERVICE_MODE}" ]; then
+ if [ -n "${SERVICE_MODE}" -a "${ret}" -ne 0 ]; then
test "${ret}" -ne 0 && ret=1
- sleep 2
fi
exit "${ret}"
}
-while getopts "ArV" opt; do
+while getopts "nrAV" opt; do
case "${opt}" in
+ "n") DBG="echo Would execute: " ;;
+ "r") scrub_args="${scrub_args} -r"; reap=1;;
"A") scrub_all=1;;
- "r") scrub_args="${scrub_args} -r";;
"V") print_version; exitcode 0;;
*) print_help; exitcode 2;;
esac
done
shift "$((OPTIND - 1))"
+# If we're in service mode and the service is not enabled via config file...
+if [ -n "${SERVICE_MODE}" -a "${periodic_e2scrub}" -ne 1 ]; then
+ # ...don't start e2scrub processes.
+ if [ "${reap}" -eq 0 ]; then
+ exitcode 0
+ fi
+
+ # ...and if we don't see any leftover e2scrub snapshots, don't
+ # run the reaping process either, because lvs can be slow.
+ if ! readlink -q -s -e /dev/mapper/*.e2scrub* > /dev/null; then
+ exitcode 0
+ fi
+fi
+
+# close file descriptor 3 (from cron) since it causes lvm to kvetch
+exec 3<&-
+
+# If some prerequisite packages are not installed, exit with a code
+# indicating success to avoid spamming the sysadmin with fail messages
+# when e2scrub_all is run out of cron or a systemd timer.
+
+if ! type mapfile >& /dev/null ; then
+ test -n "${SERVICE_MODE}" && exitcode 0
+ echo "e2scrub_all: can't find mapfile --- is bash 4.xx installed?"
+ exitcode 1
+fi
+
+if ! type lsblk >& /dev/null ; then
+ test -n "${SERVICE_MODE}" && exitcode 0
+ echo "e2scrub_all: can't find lsblk --- is util-linux installed?"
+ exitcode 1
+fi
+
+if ! type lvcreate >& /dev/null ; then
+ test -n "${SERVICE_MODE}" && exitcode 0
+ echo "e2scrub_all: can't find lvcreate --- is lvm2 installed?"
+ exitcode 1
+fi
+
# 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
+ls_scan_targets() {
+ local devices=$(lvs -o lv_path --noheadings -S "lv_active=active,lv_role=public,lv_role!=snapshot,vg_free>=${snap_size_mb}")
+
+ if [ -z "$devices" ]; then
+ return 0;
+ fi
+ lsblk -o NAME,MOUNTPOINT,FSTYPE,TYPE -P -n -p $devices | \
+ grep FSTYPE=\"ext\[234\]\" | grep TYPE=\"lvm\" | \
+ 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;
+ if [ "${scrub_all}" -eq 1 ] || [ -n "${MOUNTPOINT}" ]; then
+ echo ${MOUNTPOINT:-${NAME}}
fi
+ done
+}
- # 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
+# Find leftover scrub snapshots
+ls_reap_targets() {
+ lvs -o lv_path -S lv_role=snapshot -S lv_name=~\(e2scrub$\) \
+ --noheadings | sed -e 's/.e2scrub$//'
+}
- if [ -n "${MOUNTPOINT}" ]; then
- echo "${MOUNTPOINT}"
- else
- echo "${NAME}"
- fi
- done | sort | uniq
+# Figure out what we're targeting
+ls_targets() {
+ if [ "${reap}" -eq 1 ]; then
+ ls_reap_targets
+ else
+ ls_scan_targets
+ fi
}
# systemd doesn't know to do path escaping on the instance variable we pass
}
# Scrub any mounted fs on lvm by creating a snapshot and fscking that.
-stdin="$(realpath /dev/stdin)"
-ls_scrub_targets | while read tgt; do
+mapfile -t targets < <(ls_targets)
+for tgt in "${targets[@]}"; do
# If we're not reaping and systemd is present, try invoking the
# systemd service.
- if [ -z "${scrub_args}" ] && type systemctl > /dev/null 2>&1; then
+ if [ "${reap}" -ne 1 ] && type systemctl > /dev/null 2>&1; then
tgt_esc="$(escape_path_for_systemd "${tgt}")"
- ${DBG} systemctl start "e2scrub@${tgt_esc}" 2> /dev/null < "${stdin}"
+ ${DBG} systemctl start "e2scrub@${tgt_esc}" 2> /dev/null
res=$?
if [ "${res}" -eq 0 ] || [ "${res}" -eq 1 ]; then
continue;
fi
# Otherwise use direct invocation
- ${DBG} "@root_sbindir@/e2scrub" ${scrub_args} "${tgt}" < "${stdin}"
+ ${DBG} "@root_sbindir@/e2scrub" ${scrub_args} "${tgt}"
done
exitcode 0
git://git.whamcloud.com / tools / e2fsprogs.git / blobdiff