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

Befehl	Beschreibung
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/