Documentation for ndctl and daxctl


daxctl-online-memory - Online the memory for a device that is in system-ram mode


daxctl online-memory <dax0.0> [<dax1.0>…​<daxY.Z>] [<options>]


# daxctl reconfigure-device --mode=system-ram --no-online --human dax0.0
  "size":"7.87 GiB (8.45 GB)",
# daxctl online-memory dax0.0
dax0.0: 62 new sections onlined
onlined memory for 1 device
# daxctl online-memory dax0.0
dax0.0: 1 section already online
dax0.0: 61 new sections onlined
onlined memory for 1 device


Online the memory sections associated with a device that has been converted to the system-ram mode. If one or more blocks are already online, print a message about them, and attempt to online the remaining blocks.

This is complementary to the daxctl-reconfigure-device command, when used with the –no-online option to skip onlining memory sections immediately after the reconfigure. In these scenarios, the memory can be onlined at a later time using daxctl-online-memory.


-r; --region=
Restrict the operation to devices belonging to the specified region(s). A device-dax region is a contiguous range of memory that hosts one or more /dev/daxX.Y devices, where X is the region id and Y is the device instance id.

-u; --human
By default the command will output machine-friendly raw-integer data. Instead, with this flag, numbers representing storage size will be formatted as human readable strings with units, other fields are converted to hexadecimal strings.

-v; --verbose
Emit more debug messages


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