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NVME-DIM(1)			   NVMe Manual			     NVME-DIM(1)

NAME
     nvme-dim  -  Send	Discovery  Information Management command to one or more
     Discovery Controllers.

SYNOPSIS
     nvme dim [--task=<task> | -t <task>] [--nqn=<nqn> | -n <nqn>]
			     [--device=<device> | -d <device>]
			     [--output-format=<fmt> | -o <fmt>] [--verbose | -v]

DESCRIPTION
     Send Discovery Information Management (DIM) command to one or more  Discov-
     ery Controllers. The DIM command allows performing two types of tasks: reg-
     ister or deregister.

     The  DIM  command is used to explicitly register with Discovery Controllers
     (DC), especially with Central Discovery Controllers (CDC). CDCs maintain  a
     database  (DB)  of  all  the Hosts and Storage Subsystems in a network. The
     register task is used to add a host to the CDC's DB. The deregister task is
     used to remove a host from the CDC's DB.

     During a register operation the host will send mandatory  information  such
     as  the Host's NQN and ID, as well as the Host's hostname and the Operating
     System's version that it is running on. There is also an optional Host Sym-
     bolic Name that can be registered with the CDC.

     This command can only be applied to existing DC connections previously cre-
     ated with the nvme-discover(1) command using the --persistent option.

OPTIONS
     -t <task>, --task <task>
	 The task to perform: "register" or "deregister".

     -n <subnqn>, --nqn <nqn>
	 The DIM command will be sent to the Discovery Controller (DC)	matching
	 this  NQN.  A list of comma-separated NQNs can be supplied to apply the
	 command to more than one DC.

     -d <device>, --device <device>
	 The DIM command will be sent to the Discovery Controllers (DC)  associ-
	 ated  with  this  NVMe  device handle. A list of comma-separated device
	 handles can be supplied to apply the command to more than one DC.

     -o <fmt>, --output-format=<fmt>
	 Set the reporting format to normal, json or  binary.  Only  one  output
	 format can be used at a time.

     -v, --verbose
	 Increase the information detail in the output.

EXAMPLES
     *	 Register   with   the	 Central   Discovery   Controller   (CDC)  named
	 nqn.1988-11.com.dell:SFSS:1:20220118125153e8:

	     # nvme dim --task=register --nqn=nqn.1988-11.com.dell:SFSS:1:20220118125153e8

     *	 Deregister from Central  Discovery  Controller  (CDC)	associated  with
	 nvme4

	     # nvme dim --task=deregister --device=nvme4

SEE ALSO
     nvme-discover(1)

NVME
     Part of the nvme-user suite

NVMe				   10/31/2024			     NVME-DIM(1)

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