mountpoint err when restart csi node-plugin

[hhstu]

Start fuse process use systemd is one way to solve the problem

this is systemd example ：
csi node-plugin shoud create it when NodeStageVolume

[root@k8s1 test]# cat  /run/systemd/transient/mfs-fuse-pvc-5be4a515-13a1-4c81-b3ac-b93713bc04de.service
# This is a transient unit file, created programmatically via the systemd API. Do not edit.
[Unit]
Description=mfs fuse mount of pvc-5be4a515-13a1-4c81-b3ac-b93713bc04de

[Service]
ExecStart=
ExecStart="mount" "-f" "-t" "moosefs" "10.109.148.254:9421:/liuchang-test" "/var/lib/kubelet/plugins/kubernetes.io/csi/liuchang-test.csi.moosefs.com/e7673584d954b10a7e08aea91ae532734ebc4300f3f2a621c7e907d03025b0ac/globalmount"
ExecStopPost=
ExecStopPost="/bin/umount" "-f" "-l" "/var/lib/kubelet/plugins/kubernetes.io/csi/liuchang-test.csi.moosefs.com/e7673584d954b10a7e08aea91ae532734ebc4300f3f2a621c7e907d03025b0ac/globalmount"

[Unit]
CollectMode=inactive-or-failed
[root@k8s1-dev-common1.pgy01.ynode.cn test]#

I have fix it in my env, this is a test that recreate node-plugin and mountpoint is healthy

[root@k8s1 demo]# kubectl  get  pod  -n mfs   -owide
NAME                                     READY   STATUS    RESTARTS   AGE     IP             NODE                              NOMINATED NODE   READINESS GATES
csi-moosefs-controller-liuchang-test-0   4/4     Running   0          20m     10.55.140.59   k8s1  <none>           <none>
csi-moosefs-node-liuchang-test-894jr     2/2     Running   0          20m     10.55.140.60   k8s2 <none>           <none>
csi-moosefs-node-liuchang-test-965c9     2/2     Running   0          20m     10.55.140.61   k8s3 <none>           <none>
csi-moosefs-node-liuchang-test-pq96r     2/2     Running   0          9m37s   10.55.140.59   k8s1  <none>           <none>
[root@k8s1-dev-common1.pgy01.ynode.cn demo]# kubectl  delete  pod  -n mfs  csi-moosefs-node-liuchang-test-pq96r
pod "csi-moosefs-node-liuchang-test-pq96r" deleted
[root@k8s1 demo]#
[root@k8s1 demo]#
[root@k8s1 demo]# systemctl  status  mfs-fuse-pvc-79be2cc4-411e-47ed-947f-dbd2150b40e6
● mfs-fuse-pvc-79be2cc4-411e-47ed-947f-dbd2150b40e6.service - mfs fuse mount of pvc-79be2cc4-411e-47ed-947f-dbd2150b40e6
     Loaded: loaded (/run/systemd/transient/mfs-fuse-pvc-79be2cc4-411e-47ed-947f-dbd2150b40e6.service; transient)
  Transient: yes
     Active: active (running) since Tue 2023-12-26 14:40:18 CST; 1min 56s ago
   Main PID: 203854 (mount)
      Tasks: 17 (limit: 153589)
     Memory: 263.6M
        CPU: 534ms
     CGroup: /system.slice/mfs-fuse-pvc-79be2cc4-411e-47ed-947f-dbd2150b40e6.service
             ├─203854 mount -f -t moosefs 10.109.148.254:9421:/liuchang-test /var/lib/kubelet/plugins/kubernetes.io/csi/liuchang-test.csi.moosefs.com/73d5febbce3f883aac9afb4f4311ff27dafc29eb61b4fd9c24a1a68327d59a9f/globalmount
             └─203855 "mfsmount (mounted on: /data1/kubelet/plugins/kubernetes.io/csi/liuchang-test.csi.moosefs.com/73d5febbce3f883aac9afb4f4311ff27dafc29eb61b4fd9c24a1a68327d59a9f/globalmount)"

Dec 26 14:40:18 k8s1 mount[203855]: mfsmount[203855]: out of memory killer disabled
Dec 26 14:40:18 k8s1 mount[203855]: mfsmount[203855]: monotonic clock function: clock_gettime
Dec 26 14:40:18 k8s1 mfsmount[203855]: setting glibc malloc arena max to 4
Dec 26 14:40:18 k8s1 mfsmount[203855]: setting glibc malloc arena test to 4
Dec 26 14:40:18 k8s1 mfsmount[203855]: out of memory killer disabled
Dec 26 14:40:18 k8s1 mfsmount[203855]: monotonic clock function: clock_gettime
Dec 26 14:40:18 k8s1 mount[203855]: mfsmount[203855]: monotonic clock speed: 331293 ops / 10 mili seconds
Dec 26 14:40:18 k8s1 mfsmount[203855]: monotonic clock speed: 331293 ops / 10 mili seconds
Dec 26 14:40:19 k8s1 mount[203855]: mfsmount[203855]: my st_dev: 2097256
Dec 26 14:40:19 k8s1 mfsmount[203855]: my st_dev: 2097256
[root@k8s1 demo]#
[root@k8s1demo]# kubectl  exec -it   mfs-subpath-6db68d88d4-6z8vw   -- df  -h
Filesystem                Size      Used Available Use% Mounted on
overlay                 198.9G     33.6G    165.3G  17% /
tmpfs                    64.0M         0     64.0M   0% /dev
mfs#10.109.148.254:9421
                         10.0G         0     10.0G   0% /data
/dev/sda2               198.9G     33.6G    165.3G  17% /etc/hosts
/dev/sda2               198.9G     33.6G    165.3G  17% /dev/termination-log
/dev/sda2               198.9G     33.6G    165.3G  17% /etc/hostname
/dev/sda2               198.9G     33.6G    165.3G  17% /etc/resolv.conf
shm                      64.0M         0     64.0M   0% /dev/shm
tmpfs                    18.6G     12.0K     18.6G   0% /run/secrets/kubernetes.io/serviceaccount
tmpfs                    11.7G         0     11.7G   0% /proc/acpi
tmpfs                    64.0M         0     64.0M   0% /proc/kcore
tmpfs                    64.0M         0     64.0M   0% /proc/keys
tmpfs                    64.0M         0     64.0M   0% /proc/timer_list
tmpfs                    11.7G         0     11.7G   0% /proc/scsi
tmpfs                    11.7G         0     11.7G   0% /sys/firmware