Copy huge files system Post: 302510955

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Operating Systems AIX Copy huge files system Post 302510955 by bakunin on Tuesday 5th of April 2011 11:10:09 AM

04-05-2011

Registered User

Quote:

Originally Posted by Mr.AIX

I'm talking about dd command, can you please explain about dd command

Quite frankly, i don't understand your obsession with "dd", given that you have been offered several good alternatives. You will not gain anything by using "dd", not speed, not ease of use and definitely not safety. To me that starts to sound like homework.

Here is your solution, use at your own risk, i haven't tested it.

First find out the devices which are mounted at the respective mountpoints with the "mount" command, then use these devices as infile and outfile of "dd".

Example: copy "/ap101" to "/ap102".

Code:

# mount
  node       mounted        mounted over    vfs       date        options      
-------- ---------------  ---------------  ------ ------------ --------------- 
<...SNIP...>
         /dev/lvap101     /ap101           jfs2   Nov 29 11:33 rw,log=/dev/logapdev1vg
         /dev/lvap102     /ap102           jfs2   Nov 29 11:33 rw,nodev,nosuid,log=/dev/logapdev1vg
<...SNIP...>

# dd if=/dev/lvap101 of=/dev/lvap102 bs=512

I hope this helps.

bakunin

bakunin

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LEARN ABOUT NETBSD

audiocfg

AUDIOCFG(1)						    BSD General Commands Manual 					       AUDIOCFG(1)

NAME

     audiocfg -- configure default audio device

SYNOPSIS

     audiocfg list
     audiocfg default index
     audiocfg test index

DESCRIPTION

     The audiocfg utility helps maintaining the audio and mixer device symlinks.

     Run with ``list'', it lists the available audio devices and shows the currently selected default audio device.  Called with ``test'', it
     plays a tone of 2 seconds for each channel of the device with the index index.  Called with ``default'', it sets the default audio device to
     the one with the index index.

     audiocfg needs access to /dev/drvctl and write access to /dev (when used with ``default'') to work.

FILES

     /dev/audio  Symlink to default audio device.

     /dev/audio[0-9]*
		 Available audio devices.

     /dev/audioctl
		 Symlink to default audio control device.

     /dev/audioctl[0-9]*
		 Available audio control devices.

     /dev/drvctl
		 Used for finding the corresponding audio driver to an audio device.

     /dev/mixer  Symlink to default mixer device.

     /dev/mixer[0-9]*
		 Available mixer devices.

     /dev/sound  Symlink to default audio device (for the difference to /dev/audio, see audio(4)).

     /dev/sound[0-9]*
		 Available audio devices.

SEE ALSO

     audioplay(1), audiorecord(1), audio(4), drvctl(8)

BSD
								 September 1, 2010							       BSD