ndctl−check−labels(1)
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ndctl−check−labels − determine if the given dimms have a valid namespace index block
ndctl check−labels <nmem0> [<nmem1>..<nmemN>] [<options>]
The namespace label area is a small persistent partition of capacity available on some NVDIMM devices. The label area is used to resolve aliasing between pmem and blk capacity by delineating namespace boundaries. In addition to checking if a label area has a valid index block, running this command in verbose mode reports the reason the index block is deemed invalid.
<memory device(s)>
One or more nmemX device names. The keyword all can be specified to operate on every dimm in the system, optionally filtered by bus id (see −−bus= option).
−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.
−b, −−bus=
Limit operation to memory devices (dimms) that are on the given bus. Where bus can be a provider name or a bus id number.
−v
Turn on verbose debug messages in the library (if ndctl was built with logging and debug enabled).
Copyright (c) 2016 − 2019, Intel Corporation. License GPLv2: GNU GPL version 2 . This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.
UEFI NVDIMM Label Protocol