NAME

       ndctl-check-labels - determine if the given dimms have a valid namespace index block

SYNOPSIS

       ndctl check-labels <nmem0> [<nmem1>..<nmemN>] [<options>]

DESCRIPTION

       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.

OPTIONS

       <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

       Copyright (c) 2016 - 2019, 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

       UEFI NVDIMM Label Protocol
       <http://www.uefi.org/sites/default/files/resources/UEFI_Spec_2_7.pdf>