nfsserver resource agent isn't stopping nfsdcld on Debian 12

[saz]

When a NFS server gets started with the nfsserver resource agent, the systemd unit file will also start nfsdcld. Stopping the resource won't stop nfsdcld, which keeps the device busy, as it's keeping files open:

nfsdcld   7663                            root  cwd       DIR              254,1     4096          2 /
nfsdcld   7663                            root  rtd       DIR              254,1     4096          2 /
nfsdcld   7663                            root  txt       REG              254,1    72296     265941 /usr/sbin/nfsdcld
nfsdcld   7663                            root  mem       REG              254,1   907784     133537 /usr/lib/x86_64-linux-gnu/libm.so.6
nfsdcld   7663                            root  mem       REG              254,1  1922136     133531 /usr/lib/x86_64-linux-gnu/libc.so.6
nfsdcld   7663                            root  mem       REG              254,1    47288     132366 /usr/lib/x86_64-linux-gnu/libcap.so.2.66
nfsdcld   7663                            root  mem       REG              254,1  1437848     132082 /usr/lib/x86_64-linux-gnu/libsqlite3.so.0.8.6
nfsdcld   7663                            root  mem       REG              254,1   219152     141812 /usr/lib/x86_64-linux-gnu/libevent_core-2.1.so.7.0.1
nfsdcld   7663                            root  mem       REG              254,1   210904     131606 /usr/lib/x86_64-linux-gnu/ld-linux-x86-64.so.2
nfsdcld   7663                            root    0u      CHR                1,3      0t0          4 /dev/null
nfsdcld   7663                            root    1u      CHR                1,3      0t0          4 /dev/null
nfsdcld   7663                            root    2u      CHR                1,3      0t0          4 /dev/null
nfsdcld   7663                            root    3u  a_inode               0,16        0         54 [eventpoll:7,8]
nfsdcld   7663                            root    4r     FIFO               0,15      0t0      38101 pipe
nfsdcld   7663                            root    5w     FIFO               0,15      0t0      38101 pipe
nfsdcld   7663                            root    6u      REG              254,1    32768     527534 /var/lib/nfs/nfsdcld/main.sqlite
nfsdcld   7663                            root    7r  a_inode               0,16        0         54 inotify
nfsdcld   7663                            root    8u     FIFO               0,41      0t0        115 /run/rpc_pipefs/nfsd/cld (deleted)