DAXCTL-OFFLINE-MEMORY(1) daxctl Manual DAXCTL-OFFLINE-MEMORY(1)

# [NAME](#NAME)

daxctl-offline-memory - Offline the memory for a device that is in system-ram mode

# [SYNOPSIS](#SYNOPSIS)

```
daxctl offline-memory <dax0.0> [<dax1.0>...<daxY.Z>] [<options>]
```

# [EXAMPLES](#EXAMPLES)

•Reconfigure dax0.0 to system-ram mode

```
# daxctl reconfigure-device --mode=system-ram --human dax0.0
{


  "chardev":"dax0.0",


  "size":"7.87 GiB (8.45 GB)",


  "target_node":2,


  "mode":"system-ram"
}
```

•Offline the memory

```
# daxctl offline-memory dax0.0
dax0.0: 62 sections offlined
offlined memory for 1 device
```

# [DESCRIPTION](#DESCRIPTION)

Offline the memory sections associated with a device that has been converted to the system-ram mode. If one or more blocks are already offline, attempt to offline the remaining blocks. If all blocks were already offline, print a message and return success without actually doing anything.

This is complementary to the *daxctl-online-memory* command, and may be used when it is wished to offline the memory sections, but not convert the device back to *devdax* mode.

# [OPTIONS](#OPTIONS)

-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

# [COPYRIGHT](#COPYRIGHT)

Copyright © 2016 - 2022, Intel Corporation. License GPLv2: GNU GPL version 2 &lt;http://gnu.org/licenses/gpl.html&gt;. This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.

# [SEE ALSO](#SEE_ALSO)

[daxctl-reconfigure-device(1)](/man/os/ndctl/daxctl-reconfigure-device.1),daxctl-online-memory\[1]

2026-10-30 daxctl

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Document: daxctl-offline-memory(1) from ndctl 85-r4 (Chainguard OS)
Source: https://github.com/pmem/ndctl