Reading from tar archive made with large block size.
7013 570 325
unable to read tar tape and getting errors
ENV: 3.2.5, model 570
CUSTOMER REP: Scott Jajicek
"A system cal rec a para that is not valid"
"There is not enough memory available now"
"There is an input or output error."
\# tctl -f /dev/rmt1 status
block_size is 0.
\# dd if=/dev/rmt1 of=/tmp/block bs=128k count=1
"dd: 0+1 records in"
"dd: 0+1 records out"
\# wc -c /tmp/block
This block size, divided by 512, is 126. So this tar archive was
written using 126 512-byte blocks per tape record. The tar command
cannot automatically determine the block size of archives written with
block sizes of greater than 10240 (20 512 byte blocks per record). In
order to read this tar, we'll need to use the -N flag, like this:
\# tar -tvf /dev/rmt1 -N126 | more
It began to list the files.
ACTION PLAN: I explained how to run this command again and redirect
the output to a file. I also explained how to extract files. Close
at end of day today.
TEST CASE: N/A.
Closing with Customer Approval
Support Line: Reading from tar archive made with large block size. ITEM: DV9828L
Dated: December 1997 Category: N/A
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