.TH SG_RESET_WP "8" "February 2022" "sg3_utils\-1.48" SG3_UTILS
.SH NAME
sg_reset_wp \- send SCSI RESET WRITE POINTER command
.SH SYNOPSIS
.B sg_reset_wp
[\fI\-\-all\fR] [\fI\-\-count=ZC\fR] [\fI\-\-help\fR] [\fI\-\-verbose\fR]
[\fI\-\-version\fR] [\fI\-\-zone=ID\fR] \fIDEVICE\fR
.SH DESCRIPTION
.\" Add any additional description here
.PP
Sends a SCSI RESET WRITE POINTER command to the \fIDEVICE\fR. This command
is described in ZBC standard (INCITS 536\-2016) and the draft ZBC\-2
documents at T10 (e.g. zbc2r12.pdf).
.SH OPTIONS
Arguments to long options are mandatory for short options as well.
.TP
\fB\-a\fR, \fB\-\-all\fR
sets the ALL field in the cdb. This causes a reset write pointer operation of
all open zones and full zones. When this option is given then the
\fI\-\-zone=ID\fR option is ignored. Either this option or the
\fI\-\-zone=ID\fR option is required.
.TP
\fB\-C\fR, \fB\-\-count\fR=\fIZC\fR
ZC is placed in the Zone Count field in the cdb of the RESET WRITE POINTER
command supported by this utility. ZC should be a value from 0 to
65535 (0xffff) inclusive.
.br
The action that the \fIDEVICE\fR takes with this option depends on whether
the \fI\-\-all\fR option is set. See the RESET WRITE POINTER command
description (e.g. section 5.9, table 46 in zbc2r12.pdf).
.TP
\fB\-h\fR, \fB\-\-help\fR
output the usage message then exit.
.TP
\fB\-v\fR, \fB\-\-verbose\fR
increase the level of verbosity, (i.e. debug output).
.TP
\fB\-V\fR, \fB\-\-version\fR
print the version string and then exit.
.TP
\fB\-z\fR, \fB\-\-zone\fR=\fIID\fR
where \fIID\fR is placed in the cdb's ZONE ID field. A zone id is a zone
start logical block address (LBA). This causes a reset write pointer
operation on the zone identified by the ZONE ID field. The default value is
0. Either this option or the \fI\-\-all\fR option is required.
\fIID\fR is assumed to be in decimal unless prefixed with '0x' or has a
trailing 'h' which indicate hexadecimal.
.SH NOTES
The Zones Emptied log parameter in the Zoned Block Device Statistics log
page counts the number of times the RESET WRITE POINTER command has
been (successfully) invoked.
.SH EXIT STATUS
The exit status of sg_reset_wp is 0 when it is successful. Otherwise see
the sg3_utils(8) man page.
.SH AUTHORS
Written by Douglas Gilbert.
.SH "REPORTING BUGS"
Report bugs to <dgilbert at interlog dot com>.
.SH COPYRIGHT
Copyright \(co 2014\-2022 Douglas Gilbert
.br
This software is distributed under a BSD\-2\-Clause license. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
.SH "SEE ALSO"
.B sg_rep_zones,sg_zone(sg3_utils)