ndctl-check-namespace - check namespace metadata consistency

       Copyright © 2016 - 2022, 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.

       A namespace in the sector mode will have metadata on it to describe the kernel BTT (Block Translation
       Table). The check-namespace command can be used to check the consistency of this metadata, and
       optionally, also attempt to repair it, if it has enough information to do so.

       The namespace being checked has to be disabled before initiating a check on it as a precautionary
       measure. The --force option can override this.

       Check a namespace (only report errors)

       ndctl disable-namespace namespace0.0
       ndctl check-namespace namespace0.0

       Check a namespace, and perform repairs if possible

       ndctl disable-namespace namespace0.0
       ndctl check-namespace --repair namespace0.0

       ndctl-check-namespace - check namespace metadata consistency

       -R, --repair
           Perform metadata repairs if possible. Without this option, the raw namespace contents will not be
           touched.

       -L, --rewrite-log
           Regenerate the BTT log and write it to media. This can be used to convert from the old (pre 4.15)
           padding format that was incompatible with other BTT implementations to the updated format. This
           requires the --repair option to be provided.

               WARNING: Do not interrupt this operation as it can potentially cause
               unrecoverable metadata corruption. It is highly recommended to create
               a backup of the raw namespace before attempting this.

       -f, --force
           Unless this option is specified, a check-namespace operation will fail if the namespace is presently
           active. Specifying --force causes the namespace to be disabled before checking.

       -v, --verbose
           Emit debug messages for the namespace check process.

       -r, --region=
           A regionX device name, or a region id number. Restrict the operation to the specified region(s). The
           keyword all can be specified to indicate the lack of any restriction, however this is the same as not
           supplying a --region option at all.

       -b, --bus=
           A bus id number, or a provider string (e.g. "ACPI.NFIT"). Restrict the operation to the specified
           bus(es). The keyword all can be specified to indicate the lack of any restriction, however this is
           the same as not supplying a --bus option at all.

ndctl-disable-namespace(1), ndctl-enable-namespace(1), UEFI NVDIMM Label Protocol
       <http://www.uefi.org/sites/default/files/resources/UEFI_Spec_2_7.pdf>

ndctl                                              2024-11-01                           NDCTL-CHECK-NAMESPACE(1)

ndctlcheck-namespace <namespace> [<options>]