SYNOPSIS

nvme [<global-options>] connect-all
                        [--raw=<filename> | -r <filename>]
                        [--device=<device> | -d <device>]
                        [--config=<filename> | -J <cfg>]
                        [--persistent | -p]
                        [--quiet]
                        [--dump-config | -O]
                        [--nbft]
                        [--no-nbft]
                        [--nbft-path=<STR>]
                        [--context=<STR>]
                        [<fabrics-options>]
                        [<global-options>]

DESCRIPTION

Send one or more Discovery requests to a NVMe over Fabrics Discovery Controller, and create controllers for the returned discovery records.

If no parameters are given, then nvme connect-all will attempt to find a /tmp/usr/etc/nvme/discovery.conf file to use to supply a list of connect-all commands to run. If no /tmp/usr/etc/nvme/discovery.conf file exists, the command will quit with an error.

Otherwise a specific Discovery Controller should be specified using the --transport, --traddr and if necessary the --trsvcid and a Discovery request will be sent to the specified Discovery Controller.

See the documentation for the nvme-discover(1) command for further background.

OPTIONS

-r <filename>
--raw=<filename>

This field will take the output of the nvme connect-all command and dump it to a raw binary file. By default nvme connect-all will dump the output to stdout.

-d <device>
--device=<device>

This field takes a device as input. It must be a persistent device associated with a Discovery Controller previously created by the command "connect-all" or "discover". <device> follows the format nvme*, eg. nvme0, nvme1.

-J <filename>
--config=<filename>

Use the specified JSON configuration file instead of the default /tmp/usr/etc/nvme/config.json file or none to not read in an existing configuration file. The JSON configuration file format is documented in https://github.com/linux-nvme/nvme-cli/blob/master/libnvme/doc/config-schema.json

-p
--persistent

Don’t remove the discovery controller after retrieving the discovery log page.

--quiet

Suppress error messages.

-O
--dump-config

Print out resulting JSON configuration file to stdout.

--nbft

Only look at NBFT tables

--no-nbft

Do not look at NBFT tables

--nbft-path=<STR>

Use a user-defined path to the NBFT tables

--context <STR>

Set the execution context to <STR>. This allows to coordinate the management of the global resources.

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>
--dhchap-ctrl-secret=<secret>

Controller authentication secret for bi-directional authentication. If not specified, bi-directional authentication is not attempted.

-S <secret>
--dhchap-secret=<secret>

Host authentication secret (DH-HMAC-CHAP). Must be provided in ASCII format as defined in the NVMe specification.

--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

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.

EXAMPLES

  • Connect to all records returned by the Discover Controller with IP4 address 192.168.1.3 for all resources allocated for NVMe Host name host1-rogue-nqn on the RDMA network. Port 4420 is used by default: 

    # nvme connect-all --transport=rdma --traddr=192.168.1.3 \
--hostnqn=host1-rogue-nqn

  • Issue a nvme connect-all command using the default system defined NBFT tables: 

    # nvme connect-all --nbft

  • Issue a nvme connect-all command with a user-defined path for the NBFT table: 

    # nvme connet-all --nbft-path=/sys/firmware/acpi/tables/NBFT1

  • Issue a nvme connect-all command using a /tmp/usr/etc/nvme/discovery.conf file: 

    # Machine default 'nvme discover' commands. Query the
# Discovery Controller's two ports (some resources may only
# be accessible on a single port). Note an official
# nqn (Host) name defined in the NVMe specification is being used
# in this example.
-t rdma -a 192.168.69.33 -s 4420 -q nqn.2014-08.com.example:nvme:nvm-subsystem-sn-d78432
-t rdma -a 192.168.1.4   -s 4420 -q nqn.2014-08.com.example:nvme:nvm-subsystem-sn-d78432

At the prompt type "nvme connect-all".

SEE ALSO

nvme-discover(1) nvme-connect(1)

NVME

Part of the nvme-user suite