table of contents
DASDVIEW(8) | System Manager's Manual | DASDVIEW(8) |
NAME¶
dasdview - Display DASD and VTOC information and dump the content of a DASD to the console.SYNOPSIS¶
dasdview [-h] [-v][-b begin] [-s size] [-1|-2]
[-i] [-x] [-j] [-c]
[-l] [-t { info|f1|f4|f5|f7|f8|f9}]
{-n devno|-f node} device
DESCRIPTION¶
dasdview prints you some useful information of your disks to the console. You can display a disk dump by specifying start point and offset and you can print the volume label and VTOC entries. The device is the node of the device (e.g. '/dev/dasda'). Any device node created by udev for kernel 2.6 can be used (e.g. '/dev/dasd/0.0.b100/disc').OPTIONS¶
- -h or --help
- Print usage and exit.
- -v or --version
- Print version number and exit.
- -b begin or --begin=begin
- Print a disk dump to the console, starting with
begin. The content of the disk will be displayed in hexadecimal
numbers, ASCII text and EBCDIC text. If no size is specified dasdview will
take the default size. The variable begin can be specified in one
of the following ways:
begin[k|m|b|t|c]
-b 32 --> start printing at Byte 32
-b 32k --> start printing at kByte 32
-b 32m --> start printing at MByte 32
-b 32b --> start printing at block 32
-b 32t --> start printing at track 32
-b 32c --> start printing at cylinder 32
- -s size or --size=size
- Print a disk dump to the console, starting with
begin, specified with the -b option and size size.
The content of the disk will be displayed in hexadecimal numbers, ASCII
text and EBCDIC text. If no start value is specified dasdview will take
the default start value. The variable size can be specified in one
of the following ways:
size[k|m|b|t|c]
-s 16 --> use a 16 Byte size
-s 16k --> use a 16 kByte size
-s 16m --> use a 16 MByte size
-s 16b --> use a 16 block size
-s 16t --> use a 16 track size
-s 16c --> use a 16 cylinder size
- -1
- This option tells dasdview to print the disk dump using
format 1. This means you will get 16 Bytes per line in hex, ascii and
ebcdic. There is no line number.
- -2
- This option tells dasdview to print the disk dump using
format 2. This means you will get 8 Bytes per line in hex, ascii and
ebcdic. And in addition a line number and a decimal and hexadecimal byte
count will be printed.
- -i or --info
- Print some useful information (e.g. device node/number/type
or geometry data). When running dasdview on a kernel 2.6 based
distribution the busid is printed instead of the device number.
- -x or --extended
- Print some more DASD information (e.g. open count,
subchannel identifier).
- -j or --volser
- Print volume serial number (volume identifier).
- -l or --label
- Print the volume label.
- -c or --characteristic
- Print some information about the device e.g. if it is
encrypted.
- -t spec or --vtoc=spec
- Print the VTOC (table of content) or single VTOC entries to
the console. spec can be one of the following strings:
- -n devno or --devno=devno
- Specify the device using the device number devno.
This option is only usable if you system has switched on the device file
system.
- -f node or --devnode=node
- Specify the device using the device node devnode.
This option can also be used in case you don't use the device file system.
Apr 2006 | s390-tools |