NDCTL User Guide
Last updated
Was this helpful?
Last updated
Was this helpful?
ndctl is a utility for managing the Linux LIBNVDIMM Kernel subsystem. It is designed to work with various non-volatile memory devices (NVDIMMs) from different vendors. The LIBNVDIMM subsystem defines a kernel device model and control message interface for platform NVDIMM resources like those defined by the NFIT (NVDIMM Firmware Interface Table). The latest and specifications can be found at . Operations supported by ndctl include:
Provisioning capacity (namespaces)
Enumerating Devices
Enabling and Disabling NVDIMMs, Regions, and Namespaces
Managing NVDIMM Labels
This release incorporates functionality up to the 5.8 kernel.
Highlights include support for 'PAPR' NVDIMMs, a build fix for zero-length array warnings in GCC10, a new option for ndctl-monitor allowing for a timeout for epoll, and misc unit test and documentation fixes.
Commands:
monitor: add a new timeout option for polling list: skip region filtering if numa_node is absent
{read,write}-infoblock: set a default alignment based on platform
list/others: support for PAPR NVDIMMs
Tests:
align.sh: fix region selection, and label init expectation
APIs:
ndctl_bus_has_of_node
ndctl_bus_is_papr_scm
ndctl_region_has_numa