1NVME-WRITE-ZEROES(1) NVMe Manual NVME-WRITE-ZEROES(1)
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6 nvme-write-zeroes - Send an NVMe write zeroes command, return results
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9 nvme-write-zeroes <device> [--start-block=<slba> | -s <slba>]
10 [--block-count=<nlb> | -c <nlb>]
11 [--ref-tag=<reftag> | -r <reftag>]
12 [--prinfo=<prinfo> | -p <prinfo>]
13 [--app-tag-mask=<appmask> | -m <appmask>]
14 [--app-tag=<apptag> | -a <apptag>]
15 [--deac | -d]
16 [--limited-retry | -l]
17 [--force-unit-access | -f]
18 [--namespace-id=<nsid> | -n <nsid>]
19 [--storage-tag<storage-tag> | -S <storage-tag>]
20 [--storage-tag-check<storage-tag-check> | -C <storage-tag-check>]
21 [--force]
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24 The Write Zeroes command is used to set a range of logical blocks to 0.
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27 --start-block=<slba>, -s <slba>
28 Start block.
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30 --block-count=<nlb>, -c <nlb>
31 Number of logical blocks to write zeroes.
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33 --prinfo=<prinfo>, -p <prinfo>
34 Protection Information field definition.
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36 ┌────┬────────────────────────────┐
37 │Bit │ Description │
38 ├────┼────────────────────────────┤
39 │3 │ PRACT: Protection │
40 │ │ Information Action. When │
41 │ │ set to 1, PI is │
42 │ │ stripped/inserted on │
43 │ │ read/write when the block │
44 │ │ format’s metadata size is │
45 │ │ 8. When set to 0, metadata │
46 │ │ is passes. │
47 ├────┼────────────────────────────┤
48 │2:0 │ PRCHK: Protection │
49 │ │ Information Check: │
50 ├────┼────────────────────────────┤
51 │2 │ Set to 1 enables checking │
52 │ │ the guard tag │
53 ├────┼────────────────────────────┤
54 │1 │ Set to 1 enables checking │
55 │ │ the application tag │
56 ├────┼────────────────────────────┤
57 │0 │ Set to 1 enables checking │
58 │ │ the reference tag │
59 └────┴────────────────────────────┘
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61 --ref-tag=<reftag>, -r <reftag>
62 Optional reftag when used with protection information.
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64 --app-tag-mask=<appmask>, -m <appmask>
65 Optional application tag mask when used with protection
66 information.
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68 --app-tag=<apptag>, -a <apptag>
69 Optional application tag when used with protection information.
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71 --limited-retry, -l
72 Sets the limited retry flag.
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74 --deac, -d
75 Sets the DEAC bit, requesting controller deallocate the logical
76 blocks.
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78 --force-unit-access, -f
79 Set the force-unit access flag.
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81 --namespace-id=<nsid>, -n <nsid>
82 Namespace ID use in the command.
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84 --storage-tag=<storage-tag>, -S <storage-tag>
85 Variable Sized Logical Block Storage Tag(LBST).
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87 --storage-tag-check=<storage-tag-check>, -C <storage-tag-check>
88 This bit specifies the Storage Tag field shall be checked as part
89 of end-to-end data protection processing.
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91 --force
92 Ignore namespace is currently busy and performed the operation even
93 though.
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96 No examples yet.
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99 Part of the nvme-user suite
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103NVMe 11/04/2022 NVME-WRITE-ZEROES(1)