Blktool

blktool - Display or change block device settings

Beschreibung

• blktool is used for querying and/or changing settings of a block device.
• device is the name of the block device to query or modify.

tune low-level block device parameters

blktool is used for querying and/or changing settings of a block device. It is like hdparm but a more general tool, as it works on SCSI, IDE and SATA devices.

This program is for those who know what they're doing and it should be used at your own risk as it could cause damage to your hardware.

BLKTOOL(8) System Manager's Manual BLKTOOL(8)

Installation

sudo apt install blktool

Dateien

/usr/sbin/blktool
/usr/share/doc/blktool
/usr/share/doc/blktool/AUTHORS
/usr/share/doc/blktool/NEWS.gz
/usr/share/doc/blktool/README
/usr/share/doc/blktool/changelog.Debian.gz
/usr/share/doc/blktool/copyright
/usr/share/man/man8
/usr/share/man/man8/blktool.8.gz

Aufruf

blktool [options] device [acoustic-mgmt nnn]
blktool [options] device [block-sz nnn]
blktool [options] device [bus-id]
blktool [options] device [bus-state nnn]
blktool [options] device [class]
blktool [options] device [cd-speed nnn]
blktool [options] device [defect-mgmt off|on]
blktool [options] device [dev-keep-settings off|on]
blktool [options] device [dev-read-ahead off|on]
blktool [options] device [dma off|on]
blktool [options] device [geometry]
blktool [options] device [i2o-rcache nnn]
blktool [options] device [i2o-wcache nnn]
blktool [options] device [id]
blktool [options] device [keep-settings off|on]
blktool [options] device [media unlock|lock]
blktool [options] device [multiple-count nnn]
blktool [options] device [no-write-err off|on]
blktool [options] device [pio-data 16-bit|32-bit]
blktool [options] device [pio-mode nnn]
blktool [options] device [pm-mode nnn]
blktool [options] device [queue-depth nnn]
blktool [options] device [read-ahead nnn]
blktool [options] device [readonly off|on]
blktool [options] device [reread-part]
blktool [options] device [reset]
blktool [options] device [sector-sz]
blktool [options] device [sleep]
blktool [options] device [standby]
blktool [options] device [unmask-irq off|on]
blktool [options] device [version]
blktool [options] [version]
blktool [options] device [wcache off|on]

Optionen

Unix	GNU	Parameter	Beschreibung
-f			For a few commands, blktool will flush the buffers of the block device out to disk, before performing the requested command. Specify this option, "force", disables any flushing blktool would attempt to do.
-t		class	where class is one of 'ide', 'ata', 'scsi', 'i2o', or 'auto' to override the default auto-detection of device class.

COMMANDS

acoustic-mgmt

      Query or set underlying device's acoustic level.

block-sz

      Query or set device block size.

bus-id Query device bus id.

bus-state

      Query or set device bus state (0 off, 1 on, 2 tristate)

class Query the detected (or overridden, via -t) device class. Typically this will result in 'ATA'

      or 'SCSI' for most devices.  Detection is based on device major; thus your SATA device may  ap‐
      pear as 'SCSI'.

cd-speed

      Set CD-ROM device speed (in Kbytes/sec).

defect-mgmt

      Toggle underlying device's defect management (obsolete).

dev-keep-settings

      Toggle underlying device's revert-to-defaults-on-reset feature.

dev-read-ahead

      Toggle underlying device's read-ahead feature.

dma Toggle DMA data transfer. Omitting the on/off argument will print the current state.

geometry

      Query device geometry (cylinders / heads / sectors / etc.).

i2o-rcache

      Query or set an I2O block device's read cache.

i2o-wcache

      Query or set an I2O block device's write cache.

id Query IDENTIFY [PACKET] DEVICE data.

keep-settings

      Keep settings across device resets.  Omitting the on/off argument will print the current state.

media Lock in (or unlock) a removable device.

multiple-count

      Set multiple count for use in READ/WRITE MULTIPLE commands.

no-write-err

      Toggle ignore-write-errors flag.  Omitting the on/off argument will print the current state.

pio-data

      ATA  PIO  data  transfer via 16-bit or 32-bit I/O.  Omitting the on/off argument will print the
      current state.

pio-mode

      Set underlying ATA device's PIO data transfer mode.

pm-mode

      Set underlying device's Advanced Power Management mode.

queued-depth

      Query or set underlying device's queue depth.

read-ahead

      Query or set block device read-ahead (in units of sectors).

readonly

      Toggle block device read-only setting.  Omitting the on/off argument  will  print  the  current
      state.

reread-part

      Re-read partition table.

reset Execute device reset.

sector-sz

      Query device sector size.

sleep Put device to sleep immediately.

standby

      Put device in standby mode.

unmask-irq

      Toggle unmasked irqs.  Omitting the on/off argument will print the current state.

version

      Print version number and exit.

wcache Toggle underlying device's writeback cache.

Anhang

Siehe auch

• Blktool

Links

Weblinks

1. blktool is available over the Web on the SourceForge site at http://sourceforge.net/projects/gkernel/