| NVME-WRITE-ZEROES(1) | NVMe Manual | NVME-WRITE-ZEROES(1) |
NAME¶
nvme-write-zeroes - Send an NVMe write zeroes command, return results
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>]
[--dir-type=<dtype> | -T <dtype>]
[--dir-spec=<dspec> | -D <dspec>]
[--output-format=<fmt> | -o <fmt>] [--verbose | -v]
[--timeout=<timeout> | -t <timeout>]
DESCRIPTION¶
The Write Zeroes command is used to set a range of logical blocks to 0.
OPTIONS¶
-s <slba>, --start-block=<slba>
Start block.
-c <nlb>, --block-count=<nlb>
Number of logical blocks to write zeroes.
-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.
-l, --limited-retry
Sets the limited retry flag.
-d, --deac
Sets the DEAC bit, requesting controller deallocate the
logical blocks.
-f, --force-unit-access
Set the force-unit access flag.
-n <nsid>, --namespace-id=<nsid>
Namespace ID use in the command.
-S <storage-tag>, --storage-tag=<storage-tag>
Variable Sized Logical Block Storage Tag(LBST).
-C <storage-tag-check>, --storage-tag-check=<storage-tag-check>
This bit specifies the Storage Tag field shall be checked
as part of end-to-end data protection processing.
-T <dtype>, --dir-type=<dtype>
Directive type
-D <dspec>, --dir-spec=<dspec>
Directive specific
-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
| 10/31/2024 | NVMe |