From owner-freebsd-current  Wed Jun  5 20: 1:59 2002
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Date: Wed, 05 Jun 2002 20:01:54 -0700
To: current@FreeBSD.ORG
From: Manfred Antar <null@pozo.com>
Subject: dump on current broken -- master/slave protocol botched
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I have been using the following command to dump for months with no problem:
dump 0fua /dev/nsa0 /dev/da0s1a

for the past few weeks I get this:
(bin)504}dump 0fua /dev/nsa0 /dev/da0s1a
  DUMP: Date of this level 0 dump: Wed Jun  5 19:54:04 2002
  DUMP: Date of last level 0 dump: the epoch
  DUMP: Dumping /dev/da0s1a (/) to /dev/nsa0
  DUMP: mapping (Pass I) [regular files]
  DUMP: mapping (Pass II) [directories]
  DUMP: estimated 67590 tape blocks.
  DUMP: dumping (Pass III) [directories]
  DUMP: dumping (Pass IV) [regular files]
  DUMP: master/slave protocol botched.
  DUMP: The ENTIRE dump is aborted.
(bin)505}

I restored dump from a tape from 5/3/2002 and it works fine :
(bin)506}old.dump 0fua /dev/nsa0 /dev/da0s1a
  DUMP: Date of this level 0 dump: Wed Jun  5 19:56:05 2002
  DUMP: Date of last level 0 dump: the epoch
  DUMP: Dumping /dev/da0s1a (/) to /dev/nsa0
  DUMP: mapping (Pass I) [regular files]
  DUMP: mapping (Pass II) [directories]
  DUMP: estimated 68395 tape blocks.
  DUMP: dumping (Pass III) [directories]
  DUMP: dumping (Pass IV) [regular files]
  DUMP: DUMP: 68070 tape blocks on 1 volume
  DUMP: finished in 82 seconds, throughput 830 KBytes/sec
  DUMP: level 0 dump on Wed Jun  5 19:56:05 2002
  DUMP: Closing /dev/nsa0
  DUMP: DUMP IS DONE

The hardware is SCSI adaptec controller:
ahc0: <Adaptec aic7880 Ultra SCSI adapter> 
port 0xfc00-0xfcff mem 0xffbea000-0xffbeafff irq 10 at device 9.0 on pci0
aic7880: Ultra Wide Channel A, SCSI Id=7, 16/253 SCBs

Disk:
da0 at ahc0 bus 0 target 0 lun 0
da0: <SEAGATE ST19171W 0024> Fixed Direct Access SCSI-2 device 
da0: 20.000MB/s transfers (20.000MHz, offset 15), Tagged Queueing Enabled
da0: 8683MB (17783112 512 byte sectors: 255H 63S/T 1106C)

Tape drive HP DDS2:
sa0 at ahc0 bus 0 target 4 lun 0
sa0: <HP C1533A A907> Removable Sequential Access SCSI-2 device 
sa0: 10.000MB/s transfers (10.000MHz, offset 15)

Manfred



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