NVME-DISCONNECT(1) NVMe Manual NVME-DISCONNECT(1) # [NAME](#NAME) nvme-disconnect - Disconnect one or more Fabrics controller(s). # [SYNOPSIS](#SYNOPSIS) ``` nvme [] disconnect [--device= | -d ] [--exclude | -x] [] ``` # [DESCRIPTION](#DESCRIPTION) Disconnects and removes one or more existing NVMe over Fabrics controllers. If the --device option is specified, the controller with that name will be removed. If --nqn is given by itself, every controller connected to the subsystem identified by subnqn will be removed. If --nqn is combined with any of the other fabrics options below (the same ones *nvme connect* accepts, such as --transport, --traddr, --trsvcid, --host-traddr, --host-iface, --hostnqn or --hostid), only the controller(s) matching all of the specified options are removed — useful for disambiguating between multiple controllers connected to the same subsystem. --device cannot be combined with --nqn or any of the other fabrics options. With --exclude, a matching entry is written to the system-wide NVMe-oF exclusion list before the controller (or subsystem) is torn down, so that a cooperating orchestrator sees the exclusion in place before the removal event fires and does not immediately reconnect. See [nvme-exclusion-add(1)](/man/os/nvme-cli/nvme-exclusion-add.1) and the exclusion list overview for details. # [OPTIONS](#OPTIONS) -d <device>, --device <device> Indicates that the controller with the specified name should be removed. Cannot be combined with --nqn or any of the fabrics options below. -x, --exclude Write a matching entry to the *user* exclusion list before disconnecting, so orchestrators do not auto-reconnect the controller. The entry is built from the controller’s transport parameters (or, with a bare --nqn, from the subsystem NQN). # [FABRICS OPTIONS](#FABRICS_OPTIONS) The following options are common to NVMe over Fabrics commands such as nvme connect: -a <traddr>, --traddr=<traddr> Specify the network address of the controller. For transports using IP addressing (e.g. rdma, tcp), this should be an IP address. --concat Enable secure concatenation (TCP). -c <#>, --reconnect-delay=<#> Set the delay in seconds before reconnect is attempted after a connection loss. -C <secret>, --kxchap-ctrl-secret=<secret> Controller authentication secret for bi-directional authentication. If not specified, bi-directional authentication is not attempted. -S <secret>, --kxchap-secret=<secret> Host authentication secret (KX-HMAC-CHAP). Must be provided in ASCII format as defined in the NVMe specification. -C <secret>, --dhchap-ctrl-secret=<secret> Controller authentication secret for bi-directional authentication. If not specified, bi-directional authentication is not attempted. (deprecated, see --kxchap-ctrl-secret) -S <secret>, --dhchap-secret=<secret> Host authentication secret (DH-HMAC-CHAP). Must be provided in ASCII format as defined in the NVMe specification. (deprecated, see --kxchap-secret) --disable-sqflow Disable submission queue flow control. -G, --data-digest Enable data digest generation/verification (TCP). -D, --duplicate-connect Allow duplicate connections to the same subsystem. -g, --hdr-digest Enable header digest generation/verification (TCP). -f <iface>, --host-iface=<iface> Specify the network interface to use for the connection. -I <hostid>, --hostid=<hostid> Specify the host UUID. -q <hostnqn>, --hostnqn=<hostnqn> Override the default host NQN. -w <traddr>, --host-traddr=<traddr> Specify the source address on the host side of the connection. -k <#>, --keep-alive-tmo=<#> Set the keep-alive timeout in seconds. --keyring=<keyring> Keyring to use for TLS key lookup. -n <subnqn>, --nqn=<subnqn> Specify the NVMe subsystem NQN to connect to. -i <#>, --nr-io-queues=<#> Number of I/O queues to create. -P <#>, --nr-poll-queues=<#> Number of polling queues to create. -W <#>, --nr-write-queues=<#> Number of write queues to create. -Q <#>, --queue-size=<#> Queue depth for I/O queues. -l <#>, --ctrl-loss-tmo=<#> Maximum time in seconds to retry reconnect attempts after controller loss. -s <trsvcid>, --trsvcid=<trsvcid> Transport service identifier (e.g. TCP/rdma port). Default is 4420 for RDMA. -T <#>, --tos=<#> Type of service value for the connection (TCP). -t <trtype>, --transport=<trtype> Specify the transport type. Supported values include: \+ Value Description rdma RDMA (RoCE, iWARP, InfiniBand) tcp TCP/IP fc Fibre Channel (**experimental**) loop Local loopback transport --tls Enable TLS encryption (TCP). --tls-key=<tls-key> TLS key for the connection. It is recommended to preload keys into the system keyring instead of passing them via the command line. --tls-key-identity=<identity> Identity associated with the TLS key. # [GLOBAL OPTIONS](#GLOBAL_OPTIONS) The following options are defined at the top-level nvme command and are available to this subcommand: --dry-run Print the command that would be executed, but do not actually execute it. --no-ioctl-probing Disable probing for 64-bit IOCTL support. --no-retries Disable retry logic on transient errors. -o <fmt>, --output-format=<fmt> Set the reporting format to *normal*, *tabular, 'json*, or *binary*. Only one output format may be used at a time. --output-format-version=<version> Select the output format version. Version *1* uses the original field naming, while version *2* (default) provides more consistent and script-friendly field names. --timeout=<ms> Set the timeout for the command in milliseconds. -v, --verbose Increase the level of detail in the output. May be specified multiple times to further increase verbosity. These options can also be set as machine-wide defaults in [nvme-cli.conf(5)](/man/os/nvme-cli/nvme-cli.conf.5). A command-line flag always overrides the file. # [EXAMPLES](#EXAMPLES) •Disconnect all controllers for a subsystem named nqn.2014-08.com.example:nvme:nvm-subsystem-sn-d78432: ``` # nvme disconnect --nqn=nqn.2014-08.com.example:nvme:nvm-subsystem-sn-d78432 ``` •Disconnect the controller nvme4 ``` # nvme disconnect --device=nvme4 ``` •Disconnect only the tcp controller for a subsystem at a given traddr, leaving other controllers of the same subsystem (e.g. over a different transport address) connected: ``` # nvme disconnect --nqn=nqn.2014-08.com.example:nvme:nvm-subsystem-sn-d78432 \ --transport=tcp --traddr=192.168.1.100 ``` •Disconnect nvme4 and exclude it so orchestrators do not reconnect it: ``` # nvme disconnect --device=nvme4 --exclude ``` # [SEE ALSO](#SEE_ALSO) [nvme-connect(1)](/man/os/nvme-cli/nvme-connect.1) [nvme-exclusion-add(1)](/man/os/nvme-cli/nvme-exclusion-add.1) # [NVME](#NVME) Part of the nvme-user suite 09/18/2026 NVMe --- Document: nvme-disconnect(1) from nvme-cli 3.1-r1 (Chainguard OS) Source: https://github.com/linux-nvme/nvme-cli