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Date: Mon, 22 Nov 1999 09:03:05 -0800 (PST)
From: jegjr@erols.com
To: freebsd-gnats-submit@freebsd.org
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Subject: bin/15048: tcopy reports incorrect values
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>Number:         15048
>Category:       bin
>Synopsis:       tcopy reports incorrect values
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Mon Nov 22 09:10:00 PST 1999
>Closed-Date:
>Last-Modified:
>Originator:     John grimes
>Release:        3.2 Release
>Organization:
>Environment:
# dump -0 -B 4000000 -f /dev/nrsa0 /
# tcopy
>Description:
Whenever I perform a dump, and then try to use tcopy to verify, tcopy
always adds a 0 to 1K (1024 -> 10240) and truncates the last digit
from the number of records.  I have provided a copy of a dump output and
tcopy output below.  

OBTW: From dmesg:

ahc0: <Adaptec 2940 Ultra SCSI adapter> rev 0x00 int a irq 9 on pci0.10.0
ahc0: aic7880 Wide Channel A, SCSI Id=7, 16/255 SCBs

and

sa0 at ahc0 bus 0 target 4 lun 0
sa0: <Seagate STT8000N 3.22> Removable Sequential Access SCSI-2 device
sa0: 10.000MB/s transfers (10.000MHz, offset 15)

******************************************************************* 

This is the output from dump:

# dump -0 -B 4000000 -f /dev/nrsa0 /
  DUMP: Date of this level 0 dump: Mon Nov 22 11:46:10 1999
  DUMP: Date of last level 0 dump: the epoch
  DUMP: Dumping /dev/rwd2s1a (/) to /dev/nrsa0
  DUMP: mapping (Pass I) [regular files]
  DUMP: mapping (Pass II) [directories]
  DUMP: estimated 30996 tape blocks on 0.01 tape(s).
  DUMP: dumping (Pass III) [directories]
  DUMP: dumping (Pass IV) [regular files]
  DUMP: DUMP: 31144 tape blocks on 1 volumes(s)
  DUMP: finished in 63 seconds, throughput 494 KBytes/sec
  DUMP: Closing /dev/nrsa0
  DUMP: DUMP IS DONE

Dump reports 31144 tape blocks

The output from tcopy: 

# tcopy
file 0: block size 10240: 3114 records
file 0: eof after 3114 records: 31887360 bytes

tcopy adds a 0 to block size and truncates 31144 to 3114

>How-To-Repeat:
Do a dump, then use tcopy to verify.
>Fix:


>Release-Note:
>Audit-Trail:
>Unformatted:


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