nvme-connect-all(1)

SYNOPSIS

nvme connect-all
+                [--transport=<trtype>     | -t <trtype>]
+                [--nqn=<subnqn>           | -n <subnqn>]
+                [--traddr=<traddr>        | -a <traddr>]
+                [--trsvcid=<trsvcid>      | -s <trsvcid>]
+                [--host-traddr=<traddr>   | -w <traddr>]
+                [--host-iface=<iface>     | -f <iface>]
+                [--hostnqn=<hostnqn>      | -q <hostnqn>]
+                [--hostid=<hostid>        | -I <hostid>]
+                [--raw=<filename>         | -r <filename>]
+                [--cfg-file=<cfg>         | -C <cfg>]
+                [--keep-alive-tmo=<#>     | -k <#>]
+                [--reconnect-delay=<#>    | -c <#>]
+                [--ctrl-loss-tmo=<#>      | -l <#>]
+                [--hdr-digest             | -g]
+                [--data-digest            | -G]
+                [--nr-io-queues=<#>       | -i <#>]
+                [--nr-write-queues=<#>    | -W <#>]
+                [--nr-poll-queues=<#>     | -P <#>]
+                [--queue-size=<#>         | -Q <#>]
+                [--persistent             | -p]
+                [--quiet                  | -S]
+                [--dump-config            | -O]

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 /usr/local/etc/nvme/discovery.conf file to use to supply a list of +connect-all commands to run. If no /usr/local/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

+-t <trtype> +

+--transport=<trtype> +

+ This field specifies the network fabric being used for + a NVMe-over-Fabrics network. Current string values include: +

+ +++ + + + + + + + + + + + + + + + + + + + + + +

Value	Definition
rdma	The network fabric is an rdma network (RoCE, iWARP, Infiniband, basic rdma, etc)
fc	WIP The network fabric is a Fibre Channel network.
tcp	The network fabric is a TCP/IP network.
loop	Connect to a NVMe over Fabrics target on the local host

+-n <subnqn> +

+--nqn <subnqn> +

+ This field specifies the name for the NVMe subsystem to connect to. +

+-a <traddr> +

+--traddr=<traddr> +

+ This field specifies the network address of the Discovery Controller. + For transports using IP addressing (e.g. rdma) this should be an + IP-based address (ex. IPv4). +

+-s <trsvcid> +

+--trsvcid=<trsvcid> +

+ This field specifies the transport service id. For transports using IP + addressing (e.g. rdma) this field is the port number. By default, the IP + port number for the RDMA transport is 4420. +

+-w <traddr> +

+--host-traddr=<traddr> +

+ This field specifies the network address used on the host to connect + to the Controller. For TCP, this sets the source address on the socket. +

+-f <iface> +

+--host-iface=<iface> +

+ This field specifies the network interface used on the host to connect + to the Controller (e.g. IP eth1, enp2s0, enx78e7d1ea46da). This forces + the connection to be made on a specific interface instead of letting + the system decide. +

+-q <hostnqn> +

+--hostnqn=<hostnqn> +

+ Overrides the default Host NQN that identifies the NVMe Host. + If this option is not specified, the default is read from + /usr/local/etc/nvme/hostnqn first. If that does not exist, the + autogenerated NQN value from the NVMe Host kernel module is used next. + The Host NQN uniquely identifies the NVMe Host, and may be used by the + the Discovery Controller to control what NVMe Target resources are + allocated to the NVMe Host for a connection. +

+-I <hostid> +

+--hostid=<hostid> +

+ UUID(Universally Unique Identifier) to be discovered which should be + formatted. +

+-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. +

+-C <cfg> +

+--config-file=<cfg> +

+ Use the specified JSON configuration file instead of the + default /usr/local/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/libnvme/doc/config-schema.json +

+-k <#> +

+--keep-alive-tmo=<#> +

+ Overrides the default keep alive timeout (in seconds). This + option will be ignored for discovery, but will be passed on to + the subsequent connect call. +

+-c <#> +

+--reconnect-delay=<#> +

+ Overrides the default delay (in seconds) before reconnect is attempted + after a connect loss. +

+-l <#> +

+--ctrl-loss-tmo=<#> +

+ Overrides the default controller loss timeout period (in seconds). +

+-g +

+--hdr-digest +

+ Generates/verifies header digest (TCP). +

+-G +

+--data-digest +

+ Generates/verifies data digest (TCP). +

+-i <#> +

+--nr-io-queues=<#> +

+ Overrides the default number of I/O queues create by the driver. + This option will be ignored for discovery, but will be passed on + to the subsequent connect call. +

+-W <#> +

+--nr-write-queues=<#> +

+ Adds additional queues that will be used for write I/O. +

+-P <#> +

+--nr-poll-queues=<#> +

+ Adds additional queues that will be used for polling latency sensitive I/O. +

+-Q <#> +

+--queue-size=<#> +

+ Overrides the default number of elements in the I/O queues created + by the driver. This option will be ignored for discovery, but will be + passed on to the subsequent connect call. +

+-p +

+--persistent +

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

+-S +

+--quiet +

+ Suppress error messages. +

+-O +

+--dump-config +

+ Print out resulting JSON configuration file to stdout. +

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 a /usr/local/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".

NVME

Part of the nvme-user suite

+nvme-connect-all(1) Manual Page +

NAME

SYNOPSIS

DESCRIPTION

OPTIONS

EXAMPLES

SEE ALSO

NVME