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man: update lvmreport man page about json_std format

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Peter Rajnoha 2022-08-04 16:52:22 +02:00
parent aa7cec61ed
commit efd083f668
1 changed files with 28 additions and 8 deletions
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man/lvmreport.7_main
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@ -1303,9 +1303,19 @@ binary_values_as_numeric=1
.
LVM can output reports in different formats - use \fBreport/output_format\fP
configuration setting (or \fB--reportformat\fP command line option) to swith
the report output format. Currently, LVM supports \fB"basic"\fP (all the examples
we used above used this format) and \fB"JSON"\fP output format.
the report output format.
.P
Currently, LVM supports these outpout formats:
.RS
- \fB"basic"\fP (all the examples we used above used this format),
.br
- \fB"json"\fP,
.br
- \fB"json_std"\fP.
.RE
.P
For example:
.nf
# lvs -o lv_name,lv_size --reportformat json
{
@ -1320,13 +1330,23 @@ we used above used this format) and \fB"JSON"\fP output format.
}
.fi
.P
The \fBjson_std\fP output format is more compliant with JSON standard and
compared to the original \fBjson\fP format:
.RS
- it does not use double quotes around numeric values,
.br
- it uses 'null' for undefined numeric values,
.br
- it prints string list as proper JSON array of strings instead of a single string.
.RE
.P
Note that some configuration settings and command line options have no
effect with certain report formats. For example, with \fBJSON\fP output,
it doesn't have any meaning to use \fBreport/aligned\fP (\fB--aligned\fP),
\fBreport/noheadings\fP (\fB--noheadings\fP), \fBreport/columns_as_rows\fP
(\fB--rows\fP) or \fBreport/buffered\fP (\fB--unbuffered\fP). All these
configuration settings and command line options are ignored if using the
\fBJSON\fP report output format.
effect with certain report formats. For example, with \fBjson\fP or
\fBjson_std\fP output, it doesn't have any meaning to use \fBreport/aligned\fP
(\fB--aligned\fP), \fBreport/noheadings\fP (\fB--noheadings\fP),
\fBreport/columns_as_rows\fP (\fB--rows\fP) or \fBreport/buffered\fP
(\fB--unbuffered\fP). All these configuration settings and command line options
are ignored if using the \fBjson\fP or \fBjson_std\fP report output format.
.
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