lvconvert --splitcache, --uncache operations getting hung

Issue

• When trying to flush the cached data present in dm-cache using lvconvert --splitcache, lvconvert --uncache options, the commands are getting hung after flushing a couple of blocks. The issue also persists when using --uncache instead of --splitcache.

  $ lvconvert --splitcache testvg/testlv
  Flushing 968874 blocks for cache testvg/testlv.
  Flushing 976515 blocks for cache testvg/testlv.
  Flushing 976507 blocks for cache testvg/testlv.
  Flushing 976507 blocks for cache testvg/testlv.
  Flushing 976507 blocks for cache testvg/testlv.
  Flushing 976507 blocks for cache testvg/testlv.
  Flushing 976507 blocks for cache testvg/testlv.
  [...]