BLKZONE(8) System Administration BLKZONE(8)
NAME
blkzone - run zone command on a device
SYNOPSIS
blkzone command [options] device
DESCRIPTION
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 options.
The device argument is the pathname of the block device.
COMMANDS
report
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.
Report output
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
Zone conditions
cl Closed
nw Not write pointer
em Empty
fu Full
oe Explicitly opened
oi Implicitly opened
ol Offline
ro Read only
x? Reserved conditions (should not be reported)
reset
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 re-
set 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 explained
below.
OPTIONS
The offset and length option arguments may be followed by the multi-
plicative 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 --count.
-c, --count count
The maximum number of zones the command should operate on. The
default value is the number of zones starting from offset. This
option cannot be used together with the option --length.
-v, --verbose
Display the number of zones returned in the report or the range
of sectors reset..
-V, --version
Display version information and exit.
-h, --help
Display help text and exit.
AUTHORS
Shaun Tancheff <shaun@tancheff.com>
Karel Zak <kzak@redhat.com>
SEE ALSO
sg_rep_zones(8)
AVAILABILITY
The blkzone command is part of the util-linux package and is available
from Linux Kernel Archive <https://www.kernel.org/pub/linux/utils/util-
linux/>.
util-linux February 2017 BLKZONE(8)