Failed to delete glusterblock volume with blockvol may be not loaded error message

Issue

Failed to delete glusterblock volume with blockvol may be not loaded error message:

[2020-02-03 19:43:22.834847] INFO: delete request, blockname=blockvol_74347a9e92198dc4d9f24ef4eb0a4a8c filename=fec9d45a-e336-4730-a7cf-b4392c13d188 [at block_svc_routines.c+4697 :<block_delete_1_svc_st>]
[2020-02-03 19:43:23.703363] ERROR: Block 'blockvol_74347a9e92198dc4d9f24ef4eb0a4a8c' may be not loaded. [at block_svc_routines.c+286 :<blockCheckBlockLoadedStatus>]
[2020-02-03 19:43:23.708510] ERROR: Block 'blockvol_74347a9e92198dc4d9f24ef4eb0a4a8c' not loaded. [at block_svc_routines.c+319 :<blockCheckBlockLoadedStatus>]

# targetcli ls

showed

   | | | o- luns .......................................................................................................... [LUNs: 0]


instead of

   | | | o- luns .......................................................................................................... [LUNs: 1]
   | | | | o- lun0 ............................................. [user/blockvol_882d67523b3240f11fc03f2a2203a920 (glfs_tg_pt_gp_ano)]


   | | | o- luns .......................................................................................................... [LUNs: 0]