NVMe: Difference between revisions
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===Show unallocated capacity=== | ===Show unallocated capacity=== | ||
nvme id-ctrl /dev/nvme1|grep '''unvmcap''' | nvme id-ctrl /dev/nvme1|grep '''unvmcap''' | ||
==NVMe over fabric== | |||
===NVMe/TCP Host=== | |||
See [https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/9/html/managing_storage_devices/configuring-nvme-over-fabrics-using-nvme-tcp_managing-storage-devices#configuring-an-nvme-tcp-host_configuring-nvme-over-fabrics-using-nvme-tcp Configuring an NVMe/TCP host] | |||
modprobe | |||
===Client=== | |||
modprobe nvme_tcp | |||
====Show remote connections==== | |||
nvme list-subsys | |||
=Monitoring nvme= | =Monitoring nvme= | ||
Revision as of 16:42, 23 February 2023
NVM Express
Links
NVMe/TCP
- https://www.networkworld.com/article/3609921/nvme-over-tcp-how-it-supercharges-ssd-storage-using-standard-ip-networks.html
- nvme and tcp
- NVMe over TCP
- https://tekdeeps.com/what-is-nvme-over-tcp-how-to-use/
- https://www.linuxjournal.com/content/data-flash-part-iii-nvme-over-fabrics-using-tcp
- nvme-tcp storage operations
Qemu and NVMe
Documentation
NVMe device names
Example: /dev/nvme0n2p3
Means nvme device 0, namespace 2, partition 3 The first namespace, n1, will always exist
Namespaces
- nvme namespaces
- Drew Thorstensen - NVME namespaces
- https://narasimhan-v.github.io/2020/06/12/Managing-NVMe-Namespaces.html
HOWTO
List devices
nvme list
get details
nvme id-ctrl /dev/nvme0
if you want to find for example IP of a device:
nvme list-subsys /dev/nvme2n1
Namespaces
List namespaces
nvme list-ns /dev/nvme1
Show info about namespace
nvme id-ns /dev/nvme1n1
Show number of available namespaces
nvme id-ctrl /dev/nvme1|grep nn
Show total capacity
nvme id-ctrl /dev/nvme1|grep tnvmcap
Show unallocated capacity
nvme id-ctrl /dev/nvme1|grep unvmcap
NVMe over fabric
NVMe/TCP Host
See Configuring an NVMe/TCP host
modprobe
Client
modprobe nvme_tcp
Show remote connections
nvme list-subsys
Monitoring nvme
FAQ
Failed to open /dev/nvme-fabrics: No such file or directory
modprobe nvme-tcp
