Documentation for ndctl and daxctl


NAME

cxl-read-labels - read out the label area on a CXL memdev

SYNOPSIS

cxl read-labels <mem0> [<mem1>..<memN>] [<options>]

DESCRIPTION

The region label area is a small persistent partition of capacity available on some CXL memory devices. The label area is used to and configure or determine the set of memory devices participating in different interleave sets. This command dumps the raw binary data in a memdev’s label area to stdout or a file. In the multi-memdev case the data is concatenated.

OPTIONS

<memory device(s)>
A memX device name, or a memdev id number. Restrict the operation to the specified memdev(s). The keyword all can be specified to indicate the lack of any restriction.

-s; --size=
Limit the operation to the given number of bytes. A size of 0 indicates to operate over the entire label capacity.

-O; --offset=
Begin the operation at the given offset into the label area.

-v
Turn on verbose debug messages in the library (if libcxl was built with logging and debug enabled).

-o; --output
output file

COPYRIGHT

Copyright © 2016 - 2020, Intel Corporation. License GPLv2: GNU GPL version 2 http://gnu.org/licenses/gpl.html. This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.

SEE ALSO

cxl-write-labels, cxl-zero-labels, CXL-2.0 9.13.2