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|
#!/bin/bash
if [ $# -lt 2 ]; then
echo "Bad call to $0." >&2
echo "Expected: $0 images <source>" >&2
echo "USERNAME and PASSWORD are expected environment variables for CIFS" >&2
exit 1
fi
declare -rg CIFS_OPTS="/opt/openslx/cifs.opts"
declare -rg NFS_OPTS="/opt/openslx/nfs.opts"
WHAT="$1"
SOURCE="$2"
[ -n "$3" ] && USERNAME="$3"
[ -n "$4" ] && PASSWORD="$4"
# Currently WHAT can only be images (the central store for all images),
# but maybe there will be other storage types in the future.
case "$WHAT" in
images)
DEST="/srv/openslx/nfs"
;;
*)
echo "Invalid/Unknown mount type: '$WHAT'." >&2
exit 1
;;
esac
FLAG="${DEST}/.notmounted"
SUBDIR="${DEST}/bwlehrpool_store"
storage_test () {
rm -f -- "${FLAG}"
if [ -e "${FLAG}" ]; then
echo "Error: File '.notmounted' exists on remote storage and could not be deleted." >&2
echo "Error: Make sure the share is writable." >&2
return 5
fi
chgrp images "${DEST}" 2>/dev/null
mkdir -p "${SUBDIR}"
if [ ! -d "${SUBDIR}" ]; then
echo "Error: Could not create $(basename "$SUBDIR")! Storage not writable!" >&2
return 6
fi
echo "Applying group..."
find "${SUBDIR}" -type d -exec chgrp images {} \; 2>/dev/null
echo "Applying permissions..."
find "${SUBDIR}" -type d -exec chmod ug+rwx {} \; 2>/dev/null
echo "Creating test file..."
local TEST="${SUBDIR}/.deleteme-$RANDOM-$RANDOM"
sudo -n -u dmsd touch "$TEST"
local RET=$?
if [ -e "$TEST" ]; then
sudo -n -u dmsd rm -f -- "$TEST"
else
[ "$RET" = "0" ] && RET=127
echo "Error: Mounted share is not writable." >&2
ls -al "${DEST}" "${SUBDIR}" >&2
fi
return $RET
}
systemctl stop dnbd3-server.service
# Already mounted?
TRIES=0
while awk '{print $2}' "/proc/mounts" | grep -Fxq "${DEST}"; do
echo "Trying to unmount '$DEST'..."
if [ "$TRIES" -gt 5 ]; then
echo "Error: Cannot unmount '$DEST', giving up." >&2
exit "$RET"
elif [ "$TRIES" -gt 3 ]; then
umount -v -f "$DEST"
else
umount -v "$DEST"
fi
RET=$?
if [ "$RET" -ne "0" ]; then
cat >&2 <<-HEREDOC
Error: Cannot unmount '$DEST'!
Storage might be in use (running VM upload etc.)
Try stopping DMSD first
If the problem persists, try rebooting the server.
HEREDOC
exit "$RET"
fi
TRIES=$(( $TRIES + 1 ))
done
# Sanity checks: Destination exists?
if [ ! -d "$DEST" ]; then
mkdir -p "$DEST"
chown root:images "$DEST"
chmod 0775 "$DEST"
fi
# Still a no?
if [ ! -d "$DEST" ]; then
echo "Mount point '$DEST' does not exist and could not be created!" >&2
echo "This should not happen and means this server is severely messed up. :(" >&2
exit 1
fi
# Unmount and not requested to mount (local mode)
if [[ "${SOURCE}" == "null" ]]; then
rm -f -- "${FLAG}"
echo "Success. Now using internal storage."
systemctl --no-block start dnbd3-server.service
exit 0
fi
touch "${FLAG}"
if [[ "${SOURCE}" == "unknown" ]]; then
echo "Storage type not configured, doing nothing."
exit 0
fi
# Mount!
if grep -E -q '^[^/].+:.+' <<<$SOURCE; then
# seems to be NFS
for opt in vers=4 vers=3; do
echo " * Trying ${opt}..."
mount -v -t nfs -o rw,noatime,noexec,nodev,async,nolock,$opt,fg,ac,retry=0,timeo=200,sec=sys "$SOURCE" "$DEST"
RET=$?
[ "$RET" -ne "0" ] && continue
echo "Mount succeeded, checking write permissions...."
storage_test
RET=$?
[ "$RET" -eq "0" ] && break
umount -v "$DEST" || umount -v -f -l "$DEST"
done
elif grep -E -q '^//' <<<$SOURCE; then
# seems to be SMB
export USER="$USERNAME"
export PASSWD="$PASSWORD"
RET=999
OPTSTR=
if [ -f "$CIFS_OPTS" ]; then
OPTSTR=$(cat "$CIFS_OPTS")
fi
if [ -n "$OPTSTR" ]; then
echo " * Trying last successful mount options..."
if mount -v -t cifs -o "$OPTSTR" "$SOURCE" "$DEST"; then
echo "Mount succeeded, checking write permissions...."
storage_test
RET=$?
if [ "$RET" -ne "0" ]; then
umount -v "$DEST" || umount -v -f -l "$DEST"
fi
fi
fi
if [ "$RET" -ne "0" ]; then
for vers in "" "3.0" "2.1" "1.0" "2.0"; do
[ -n "$vers" ] && vers=",vers=${vers}"
for sec in "" "ntlmssp" "ntlmv2" "ntlm"; do
[ -n "$sec" ] && sec=",sec=${sec}"
echo " * Trying ...${vers}${sec}..."
OPTSTR="rw,uid=0,gid=12345,forceuid,forcegid,nounix,file_mode=0664,dir_mode=0775$vers$sec"
mount -v -t cifs -o "$OPTSTR" "$SOURCE" "$DEST"
RET=$?
[ "$RET" -ne "0" ] && continue
echo "Mount succeeded, checking write permissions...."
storage_test
RET=$?
[ "$RET" -eq "0" ] && break
umount -v "$DEST" || umount -v -f -l "$DEST"
done
[ "$RET" -eq "0" ] && break
done
if [ "$RET" -eq "0" ] && [ -n "$OPTSTR" ]; then
echo "$OPTSTR" > "$CIFS_OPTS"
fi
fi
unset USER PASSWD
else
echo "Unknown mount type: $SOURCE"
exit 1
fi
echo ""
if [ "$RET" = "0" ]; then
echo "----------------------------------"
echo "-- Share mounted successfully! --"
echo "----------------------------------"
systemctl --no-block start dnbd3-server.service
fi
exit $RET
|
