SYNOPSIS

nvme-write-zeroes <device> [--start-block=<slba> | -s <slba>]
                        [--block-count=<nlb> | -c <nlb>]
                        [--ref-tag=<reftag> | -r <reftag>]
                        [--prinfo=<prinfo> | -p <prinfo>]
                        [--app-tag-mask=<appmask> | -m <appmask>]
                        [--app-tag=<apptag> | -a <apptag>]
                        [--deac | -d]
                        [--limited-retry | -l]
                        [--force-unit-access | -f]
                        [--namespace-id=<nsid> | -n <nsid>]
                        [--storage-tag<storage-tag> | -S <storage-tag>]
                        [--storage-tag-check<storage-tag-check> | -C <storage-tag-check>]

DESCRIPTION

The Write Zeroes command is used to set a range of logical blocks to 0.

OPTIONS

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

Start block.

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

Number of logical blocks to write zeroes.

--prinfo=<prinfo>
-p <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
--ref-tag=<reftag>
-r <reftag>

Optional reftag when used with protection information.

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

Optional application tag mask when used with protection information.

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

Optional application tag when used with protection information.

--limited-retry
-l

Sets the limited retry flag.

--deac
-d

Sets the DEAC bit, requesting controller deallocate the logical blocks.

--force-unit-access
-f

Set the force-unit access flag.

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

Namespace ID use in the command.

--storage-tag=<storage-tag>
-n <storage-tag>

Variable Sized Expected Logical Block Storage Tag(ELBST) and Expected Logical Block Reference Tag (ELBRT), CDW2 and CDW3 (00:47) bits.

--storage-tag-check=<storage-tag-check>
-C <storage-tag-check>

This bit specifies the Storage Tag field shall be checked as part of end-to-end data protection processing.

EXAMPLES

No examples yet.

NVME

Part of the nvme-user suite