Users Guide

Broadcom DRVLin-UG128-100
115
Emulex Drivers for Linux User Guide
0 crw------- 1 root root 246, 7 Jun 10 16:02 /dev/nvme7
0 crw------- 1 root root 246, 8 Jun 10 16:02 /dev/nvme8
0 crw------- 1 root root 246, 9 Jun 10 16:02 /dev/nvme9
This example demonstrates that one device node is created per namespace, with the following form:
/dev/nvme{subsystem instance}n{namespace}
Additionally, nodes are created for the controller instances /dev/nvme{controller instance}, but it is important to
note that the subsystem instance and the controller instance are not correlated, as demonstrated by the previous
nvme list-subsys example.
You can also list all of the block devices that are NVMe devices using the ls command. The file names are displayed as
symbolic links to the actual block devices.
ls -l /sys/block/nvme*
lrwxrwxrwx 1 root root 0 Jun 11 09:56 /sys/block/nvme0c222n1 -> ../devices/virtual/nvme-fabrics/ctl/
nvme0/nvme0c222n1
lrwxrwxrwx 1 root root 0 Jun 11 09:56 /sys/block/nvme0c222n2 -> ../devices/virtual/nvme-fabrics/ctl/
nvme0/nvme0c222n2
lrwxrwxrwx 1 root root 0 Jun 11 09:56 /sys/block/nvme0c222n3 -> ../devices/virtual/nvme-fabrics/ctl/
nvme0/nvme0c222n3
lrwxrwxrwx 1 root root 0 Jun 11 09:56 /sys/block/nvme0c222n4 -> ../devices/virtual/nvme-fabrics/ctl/
nvme0/nvme0c222n4
lrwxrwxrwx 1 root root 0 Jun 11 09:56 /sys/block/nvme0c227n1 -> ../devices/virtual/nvme-fabrics/ctl/
nvme3/nvme0c227n1
lrwxrwxrwx 1 root root 0 Jun 11 09:56 /sys/block/nvme0c227n2 -> ../devices/virtual/nvme-fabrics/ctl/
nvme3/nvme0c227n2
lrwxrwxrwx 1 root root 0 Jun 11 09:56 /sys/block/nvme0c227n3 -> ../devices/virtual/nvme-fabrics/ctl/
nvme3/nvme0c227n3
lrwxrwxrwx 1 root root 0 Jun 11 09:56 /sys/block/nvme0c227n4 -> ../devices/virtual/nvme-fabrics/ctl/
nvme3/nvme0c227n4
lrwxrwxrwx 1 root root 0 Jun 11 09:56 /sys/block/nvme0n1 -> ../devices/virtual/nvme-subsystem/nvme-
subsys0/nvme0n1
lrwxrwxrwx 1 root root 0 Jun 11 09:56 /sys/block/nvme0n2 -> ../devices/virtual/nvme-subsystem/nvme-
subsys0/nvme0n2
lrwxrwxrwx 1 root root 0 Jun 11 09:56 /sys/block/nvme0n3 -> ../devices/virtual/nvme-subsystem/nvme-
subsys0/nvme0n3
lrwxrwxrwx 1 root root 0 Jun 11 09:56 /sys/block/nvme0n4 -> ../devices/virtual/nvme-subsystem/nvme-
subsys0/nvme0n4
lrwxrwxrwx 1 root root 0 Jun 11 09:56 /sys/block/nvme1c223n1 -> ../devices/virtual/nvme-fabrics/ctl/
nvme1/nvme1c223n1
lrwxrwxrwx 1 root root 0 Jun 11 09:56 /sys/block/nvme1c223n2 -> ../devices/virtual/nvme-fabrics/ctl/
nvme1/nvme1c223n2
lrwxrwxrwx 1 root root 0 Jun 11 09:56 /sys/block/nvme1c223n3 -> ../devices/virtual/nvme-fabrics/ctl/
nvme1/nvme1c223n3
lrwxrwxrwx 1 root root 0 Jun 11 09:56 /sys/block/nvme1c223n4 -> ../devices/virtual/nvme-fabrics/ctl/
nvme1/nvme1c223n4
lrwxrwxrwx 1 root root 0 Jun 11 09:56 /sys/block/nvme1c229n1 -> ../devices/virtual/nvme-fabrics/ctl/
nvme6/nvme1c229n1
lrwxrwxrwx 1 root root 0 Jun 11 09:56 /sys/block/nvme1c229n2 -> ../devices/virtual/nvme-fabrics/ctl/
nvme6/nvme1c229n2
lrwxrwxrwx 1 root root 0 Jun 11 09:56 /sys/block/nvme1c229n3 -> ../devices/virtual/nvme-fabrics/ctl/
nvme6/nvme1c229n3
lrwxrwxrwx 1 root root 0 Jun 11 09:56 /sys/block/nvme1c229n4 -> ../devices/virtual/nvme-fabrics/ctl/
nvme6/nvme1c229n4
lrwxrwxrwx 1 root root 0 Jun 11 09:56 /sys/block/nvme1n1 -> ../devices/virtual/nvme-subsystem/nvme-
subsys1/nvme1n1