Process is not killed by kill -9

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1

Anyone knows how to kill that process?

sudo lsof -p 254507;sudo kill -9 254507;sleep 10;sudo lsof -p 254507

lsof: WARNING: can't stat() fuse.gvfsd-fuse file system /run/user/1000/gvfs
      Output information may be incomplete.
lsof: WARNING: can't stat() fuse.portal file system /home/username/.cache/doc
      Output information may be incomplete.
lsof: WARNING: can't stat() fuse.gvfsd-fuse file system /home/username/.cache/gvfs
      Output information may be incomplete.
COMMAND     PID USER   FD      TYPE DEVICE SIZE/OFF NODE NAME
txg_sync 254507 root  cwd       DIR  254,0     4096    2 /
txg_sync 254507 root  rtd       DIR  254,0     4096    2 /
txg_sync 254507 root  txt   unknown                      /proc/254507/exe
lsof: WARNING: can't stat() fuse.gvfsd-fuse file system /run/user/1000/gvfs
      Output information may be incomplete.
lsof: WARNING: can't stat() fuse.portal file system /home/username/.cache/doc
      Output information may be incomplete.
lsof: WARNING: can't stat() fuse.gvfsd-fuse file system /home/username/.cache/gvfs
      Output information may be incomplete.
COMMAND     PID USER   FD      TYPE DEVICE SIZE/OFF NODE NAME
txg_sync 254507 root  cwd       DIR  254,0     4096    2 /
txg_sync 254507 root  rtd       DIR  254,0     4096    2 /
txg_sync 254507 root  txt   unknown                      /proc/254507/exe

i think that the process is related to ZFS filesystem (in my case based on ext. drive) (has kernel module), trying to kill via “su” command line not helped. 5.10.23-1-MANJARO

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