Using tar with block size 1024

Aaron Konstam akonstam at
Wed Jul 11 13:41:07 UTC 2007

On Wed, 2007-07-11 at 08:42 +0700, Budiono wrote:
> Hi all,
> When I backup my harddisk using tar script into tape backup, using 
> block-size 1024 and Redhat 9.0 system it running well. But in my new 
> system (Fedora Core 6),using tar for backup with big block size (1024) 
> it get error message:
> [root at mis-s155 ~]# tar -b 1024 -cvf /dev/st0 /usr/local/src
> tar: Removing leading `/' from member names
> tar: /dev/st0: Cannot write: Device or resource busy
> tar: Error is not recoverable: exiting now
> But it run ok but slow when using block size 128, higher than that, it 
> get same error as above message.
> I looking in google but get no satisfy solution, some link in google I 
> found that module st.o have some problem in kernel 2.6 ?
> Does any one have the same experience ?
> Thank's
> Budiono
Well I don't kknow but let me share this:
The first error is not an error but an artifact of tar always removes
the first '/'

Could it be that the tape drive has its own idea what its block size is?
Just a guess.
I'll never get off this planet. -- Luke Skywalker
Aaron Konstam telephone: (210) 656-0355 e-mail: akonstam at

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