dd command?????

[230173]

What am i doing wrong?

$ dd if=/oradata4/prodenv/tools01.dbf of=/dev/rmt1 bs=64k
dd: 0511-053 The write failed.
: A system call received a parameter that is not valid.
3+0 records in.
0+0 records out.
$

 

[bjverzal]

Post the results of: lsattr -El rmt1

 

[230173]

root@quality:/ # lsattr -El rmt1
mode yes Use DEVICE BUFFERS during writes True
block_size 10240 BLOCK size (0=variable length) True
extfm yes Use EXTENDED file marks True
res_support no RESERVE/RELEASE support True
var_block_size 0 BLOCK SIZE for variable length support True
density_set_1 0 DENSITY setting #1 True
density_set_2 0 DENSITY setting #2 True
delay 45 Set delay after a FAILED command True
rwtimeout 144 Set timeout for the READ or WRITE command True
ret_error no RETURN error on tape change or reset True
root@quality:/ #


The block size i'm writing with (64k) doesn't have to be 1024k. right?

 

[230173]

Sorry that's 10240 instead of 1024.

 

[230173]

I have made an adjustment to the blocksize of the tapedrive.
Instead of 10240 i made it 1024.
Then i tried the folowing:

$ dd if=/oradata4/prodenv/tools01.dbf of=/dev/rmt1 bs=1024k
5+1 records in.
5+1 records out.

So it seems to work but how can i see what's on the tape?
I tried tar but no luck.

$ tar -tvf /dev/rmt1
$

 

[LeDam]

Make first a tar of what you backup... so you can use this command....

 

[bjverzal]

Read the tape with "dd if=/dev/rmt1 count=1 bs=64k".

You can't use "tar" to read non-tar tapes.

Bill.