blkzone is used to run zone command on device that support the Zoned
Block Commands (ZBC) or Zoned-device ATA Commands (ZAC). The zones to
operate on can be specified using the offset, count and length
The device argument is the pathname of the block device.
The command blkzone report is used to report device zone information.
By default, the command will report all zones from the start of the
block device. Options may be used to modify this behavior, changing
the starting zone or the size of the report, as explained below.
start Zone start sector
len Zone length in number of sectors
wptr Zone write pointer position
reset Reset write pointer recommended
non-seq Non-sequential write resources active
cond Zone condition
type Zone type
nw Not write pointer
oe Explicitly opened
oi Implicitly opened
ro Read only
x? Reserved conditions (should not be reported)
The command blkzone reset is used to reset one or more zones. Unlike
sg_reset_wp(8), this command operates from the block layer and can
reset a range of zones.
By default, the command will operate from the zone at device sector 0
and reset all zones. Options may be used to modify this behavior as
well as specify the operation to be performed on the zone, as
The offset and length option arguments may be followed by the
multiplicative suffixes KiB (=1024), MiB (=1024*1024), and so on for
GiB, TiB, PiB, EiB, ZiB and YiB (the "iB" is optional, e.g., "K" has
the same meaning as "KiB") or the suffixes KB (=1000), MB
(=1000*1000), and so on for GB, TB, PB, EB, ZB and YB. Additionally,
the 0x prefix can be used to specify offset and length in hex.
-o, --offset sector
The starting zone specified as a sector offset. The provided
offset in sector units (512 bytes) should match the start of a
zone. The default value is zero.
-l, --length sectors
The maximum number of sectors the command should operate on.
The default value is the number of sectors remaining after
offset. This option cannot be used together with the option
-c, --count count
The maximum number of zones the command should operate on. The
default value is the nuber of zones starting from offset. This
option cannot be used together with the option --length.
Display the number of zones returned in the report or the
range of sectors reset..
Display version information and exit.
Display help text and exit.
This page is part of the util-linux (a random collection of Linux
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util-linux February 2017 BLKZONE(8)