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.

Anwendung

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.

COMMANDS

Anhang

Siehe auch

• Blktool

Links

Weblinks

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