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NVME-WRITE(1) | NVMe Manual | NVME-WRITE(1) |
NAME¶
nvme-write - Send an NVMe write command, provide resultsSYNOPSIS¶
nvme-write <device> [--start-block=<slba> | -s <slba>] [--block-count=<nlb> | -c <nlb>] [--data-size=<size> | -z <size>] [--metadata-size=<size> | -y <size>] [--data=<data-file> | -d <data-file>] [--metadata=<metadata-file> | -M <metadata-file>] [--prinfo=<prinfo> | -p <prinfo>] [--ref-tag=<reftag> | -r <reftag>] [--app-tag-mask=<appmask> | -m <appmask>] [--app-tag=<apptag> | -a <apptag>] [--limited-retry | -l] [--latency | -t] [--force-unit-access | -f]
DESCRIPTION¶
The Write command writes the logical blocks specified by the command to the medium from the data data buffer provided. Will use stdin by default if you don’t provide a file.OPTIONS¶
--start-block=<slba>, -s <slba>Start block.
--block-count, -c
The number of blocks to transfer. This is a zeroes based
value to align with the kernel’s use of this field. (ie. 0 means
transfer 1 block).
--block-count=<nlb>, -c <nlb>
Number of logical blocks to write.
--data-size=<size>, -z <size>
Size of data, in bytes.
--metadata-size=<size>, -y <size>
Size of metadata in bytes.
--data=<data-file>, -d <data-file>
Data file. If none provided, contents are sent from
STDIN.
--metadata=<metadata-file>, -M <metadata-file>
Metadata file, if necessary.
--prinfo=<prinfo>, -p <prinfo>
Protection Information field defintion.
--ref-tag=<reftag>, -r <reftag>
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 |
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.
--force-unit-access, -f
Set the force-unit access flag.
--latency, -t
Print out the latency the IOCTL took (in us).
EXAMPLES¶
No examples yet.NVME¶
Part of the nvme-user suite11/15/2016 | NVMe |