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Date:      25 May 1999 18:56:34 GMT
From:      gw-bsd-stable@news.kiev.sovam.com
To:        freebsd-stable@freebsd.org
Subject:   Re: Stability
Message-ID:  <7ierp2$up4$1@news.kiev.sovam.com>

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Wilko Bulte <wilko@yedi.iaf.nl> wrote:

>> Second i made a small experiment trying to see wether the floppy
>> problem is still there.
>
> FreeBSD yedi.iaf.nl 3.2-STABLE FreeBSD 3.2-STABLE #0: Tue May 25 17:26:33 CEST 1999     root@yedi.iaf.nl:/usr/freebsd-3.1-stable-src/src/sys/compile/YEDI  i386
[ ... ] 
> No panic. NREP as far as I can see.

 FreeBSD 3.2-19990522-STABLE: when dd'ing /kernel to write protected
 floppy, it doesn't panic, but I can't kill this process in any way and
 this process doesn't finish in reasonable time. I waited about 10
 minutes and then rebooted computer - it couldn't correctly shutdown, said
 "Syncing disks" and rebooted. After restart it said that / wasn't
 properly dismounted. Almost panic, without panic message...
 
 While dd'ing it logs lots of information about this process, something
 similar to:

cdrw /kernel: fd0c: hard error writing fsbn 0 of 0-3 (No status)
                                            ^^^^^^^^
				and this for all source's size space

 and then, without pause:

cdrw /kernel: fd0c: hard error writing fsbn 0 of 0-3 (ST0 40<abnrml> ST1 2<write_protect> ST2 0 cyl 0 hd 0 sec 1)

 And again and again and again... Infinite loop. Not good, as for me.

 Ok. dd'ing boot.flp (2949120 bytes) to write protected 1.44 fd gives such
 result:

  dd if=boot.flp of=/dev/fd0
  dd: /dev/fd0: end of device
  358+0 records in
  358+0 records out
  182784 bytes transferred in 49.324598 secs (3706 bytes/sec)
  ^^^^^^
     Note transferred size. Even not 1.44Mb...

 and then panic with message:

  panic: vinvalbuf: dirty bufs

 Third test: dd'ing boot.flp to write enabled 1.44Mb floppy is correct
 - 2881+0 records in, 2880+0 records out. BUT! When used bs=8192, FreeBSD
 hanged immediately.

 And last: quite unexpected behaviour when eject diskette from drive while
 dd'ing to it something. In my case it was panic with message:

  fd0c: hard error writing fsbn 81 of 80-83 (No status)
  fd0c: hard error writing fsbn 84 of 84-87 (No status)
  fd0c: hard error writing fsbn 81 of 80-83 (No status)
  fd0c: hard error writing fsbn 81 of 80-83 (No status)
  fd0c: hard error writing fsbn 81 of 80-83 (No status)
  fd0c: hard error writing fsbn 81 of 80-83 (No status)
  panic: vinvalbuf: dirty bufs

  syncing disk... 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 giving up
  Automatic reboot in 15 seconds ...
  ...

 So, work with FDD still unstable in FreeBSD 3.x

-- 
doka



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