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NVME-VERIFY(1) NVMe Manual NVME-VERIFY(1)

NAME

nvme-verify - Send an NVMe Verify command, return results

SYNOPSIS

nvme-verify <device> [--namespace-id=<nsid> | -n <nsid>]


                        [--start-block=<slba> | -s <slba>]


                        [--block-count=<nlb> | -c <nlb>] [--limited-retry | -l]


                        [--force-unit-access | -f]


                        [--prinfo=<prinfo> | -p <prinfo>]


                        [--ref-tag=<reftag> | -r <reftag>]


                        [--app-tag-mask=<appmask> | -m <appmask>]


                        [--app-tag=<apptag> | -a <apptag>]


                        [--storage-tag<storage-tag> | -S <storage-tag>]


                        [--storage-tag-check | -C]


                        [--output-format=<fmt> | -o <fmt>] [--verbose | -v]


                        [--timeout=<timeout> | -t <timeout>]

DESCRIPTION

The Verify command verifies the integrity of the stored information by reading data and metadata.

OPTIONS

-n <nsid>, --namespace-id=<nsid>

Namespace ID use in the command.

-s <slba>, --start-block=<slba>

Start block address.

-c <nlb>, --block-count=<nlb>

Number of logical blocks to Verify.

-l, --limited-retry

Sets the limited retry flag.

-f, --force-unit-access

Set the force-unit access flag.

-p <prinfo>, --prinfo=<prinfo>

Protection Information field definition.
Bit Description
3 PRACT: Protection Information Action. When set to 1, PI is stripped/inserted on read/write when the block format’s metadata size is 8. When set to 0, metadata is passes.
2:0 PRCHK: Protection Information Check:
2 Set to 1 enables checking the guard tag
1 Set to 1 enables checking the application tag
0 Set to 1 enables checking the reference tag

-r <reftag>, --ref-tag=<reftag>

Optional reftag when used with protection information.

-m <appmask>, --app-tag-mask=<appmask>

Optional application tag mask when used with protection information.

-a <apptag>, --app-tag=<apptag>

Optional application tag when used with protection information.

-S <storage-tag>, --storage-tag=<storage-tag>

Variable Sized Expected Logical Block Storage Tag(ELBST).

-C, --storage-tag-check

This flag enables Storage Tag field checking as part of Verify operation.

-o <fmt>, --output-format=<fmt>

Set the reporting format to normal, json or binary. Only one output format can be used at a time.

-v, --verbose

Increase the information detail in the output.

-t <timeout>, --timeout=<timeout>

Override default timeout value. In milliseconds.

EXAMPLES

No examples yet.

NVME

Part of the nvme-user suite

04/13/2025 NVMe