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* [pups] 2.11BSD device config trouble
@ 2003-05-01 19:14 Michael Sokolov
  0 siblings, 0 replies; 16+ messages in thread
From: Michael Sokolov @ 2003-05-01 19:14 UTC (permalink / raw)


Norman Wilson <norman at nose.cs.utoronto.ca> wrote:

> This convenience was abolished in either 4.2 or 4.3 (I am
> travelling right now and cannot check manuals and 
> sources).

I don't remember the details in my head and I'm also typing this on the go, but
in 4.3BSD fsck does work on the block device and then you reboot with, well,
reboot, and it works.

MS



^ permalink raw reply	[flat|nested] 16+ messages in thread
* [pups] 2.11BSD device config trouble
@ 2003-05-01 13:49 Norman Wilson
  0 siblings, 0 replies; 16+ messages in thread
From: Norman Wilson @ 2003-05-01 13:49 UTC (permalink / raw)


Carl Lowenstein:

  Isn't this really true of Unix systems of any age, when doing fsck
  on a mounted root file system?

Some middle-elderly BSD systems--4.1 and possibly 4.0--
managed the buffer pool in such a way that the super-block
of a mounted file system was kept in the original buffer,
with device and block number correctly stored in the struct
buf header.  Hence if fsck wrote to the block device rather
than the raw one, the super-block came out right even when
checking a mounted file system; in particular there was no
need to reboot.

This convenience was abolished in either 4.2 or 4.3 (I am
travelling right now and cannot check manuals and 
sources).  I never quite understood why, though I never
looked at the source code in the later systems.  The
scheme found in most current systems, in which the
root starts out read-only, is a better idea anyway.

Norman Wilson
Toronto ON (normally)





^ permalink raw reply	[flat|nested] 16+ messages in thread
* [pups] 2.11BSD device config trouble
@ 2003-05-01  4:04 Steven M. Schultz
  0 siblings, 0 replies; 16+ messages in thread
From: Steven M. Schultz @ 2003-05-01  4:04 UTC (permalink / raw)


Hi -

> From: Carl Lowenstein <cdl at mpl.ucsd.edu>
> > > > 'halt' button?   
> > > [...]
> > 
> > 	I did the the same thing - wondered why I could never get a clean
> > 	file system.   Then I realized what was going on.
> 
> Isn't this really true of Unix systems of any age, when doing fsck
> on a mounted root file system?

	Not really.  Newer systems mount the root filesystem read-only
	while running fsck.   After the filesystem is verified as clean
	then it is upgraded to read-write.

	Older systems such as 2BSD can't run with a read-only root 
	filesystem that I know of.   At least not easily/happily.   Might be 
	possible (the ability to upgrade a ro mount to rw is present) but
	it's never been a priority to look into it ;)

	Cheers,
	Steven Schultz



^ permalink raw reply	[flat|nested] 16+ messages in thread
* [pups] 2.11BSD device config trouble
@ 2003-05-01  3:30 Carl Lowenstein
  2003-05-01  3:48 ` Gregg C Levine
  0 siblings, 1 reply; 16+ messages in thread
From: Carl Lowenstein @ 2003-05-01  3:30 UTC (permalink / raw)


> From: "Steven M. Schultz" <sms at 2BSD.COM>
> To: pups at minnie.tuhs.org
> Subject: Re: [pups] 2.11BSD device config trouble
> Date: Wed, 30 Apr 2003 11:43:11 -0700 (PDT)
> 
> Hi -
> 
> > From: Jochen Kunz <jkunz at unixag-kl.fh-kl.de>
> 
> > > 'halt' button?   
> > [...]
> > Noticed that already. I am really not used to Unix stuff of that age.
> 
> 	:)  
> 
> 	I did the the same thing - wondered why I could never get a clean
> 	file system.   Then I realized what was going on.

Isn't this really true of Unix systems of any age, when doing fsck
on a mounted root file system?

    carl




^ permalink raw reply	[flat|nested] 16+ messages in thread
* [pups] 2.11BSD device config trouble
@ 2003-04-30 18:43 Steven M. Schultz
  2003-05-01  9:24 ` Jochen Kunz
  0 siblings, 1 reply; 16+ messages in thread
From: Steven M. Schultz @ 2003-04-30 18:43 UTC (permalink / raw)


Hi -

> From: Jochen Kunz <jkunz at unixag-kl.fh-kl.de>
> As already mentioned: If I add comments at the end of the lines it

> cn      1 176540 344    5       cnrint  cnxint  # kl/dl-11 (on mvx11-aa)
> cn      2 176550 354    5       cnrint  cnxint  # kl/dl-11 (on mvx11-aa)
> cn      3 176560 364    5       cnrint  cnxint  # kl/dl-11 (on mvx11-aa)
> cn 1 csr 176540 vector 344 attached
> cn 2 csr 176550 vector 354 attached
> cn 3 csr 176560 vector 364 attached
> Sounds like a funny bug? 

	Yes, it does.   A bug in the parsing.   Why it does not affect all
	the lines is unknown.   Perhaps some trailing whitespace caused the
	parser to exhibit the bug.

> But if I try to use /dev/ttyl1 I get a message about a unknown interrupt
> and the output of /dev/ttyl1 hangs after the first character. 
	
	What is the exact message?   I did a "strings /unix" and could not
	not find a string that looked mentioned unknown or interrupt.

	That would seem to indicate that the device is interrupting but not
	at the expected vector.

	It is possible to use 'adb' to look at the contents of the vectors.

	adb -k /unix /dev/kmem
	0344/o

	will show the contents of the 0344 vector.  The value there should
	be equal to 'cnrint' (or cnxint - I forget which comes first).

> I have a M3106 DZQ11 that I can use instead. 

	Definitely worth trying.   

> The DHV is a DEC M3104:
> dhv ? csr 160440 vector 310 didn't interrupt.
> The DL11 card is a clone made by Sigma. 
	
	Ah, ok.  Thanks for the correction.   I misread the initial mail item.

> > 'halt' button?   
> [...]
> Noticed that already. I am really not used to Unix stuff of that age.

	:)  

	I did the the same thing - wondered why I could never get a clean
	file system.   Then I realized what was going on.

	Cheers,
	Steven Schultz



^ permalink raw reply	[flat|nested] 16+ messages in thread
* [pups] 2.11BSD device config trouble
@ 2003-04-30 16:03 Steven M. Schultz
  0 siblings, 0 replies; 16+ messages in thread
From: Steven M. Schultz @ 2003-04-30 16:03 UTC (permalink / raw)


Hi!

> From: David Evans <dfevans at bbcr.uwaterloo.ca>
> > cn      1 176540 344    5       cnrint  cnxint
>  
> to the end of this line?  Perhaps the autoconfig parser becomes confused
> if there aren't any.
	
	I don't think that's the problem in this case - the error that is
	being printed out:

	 cn 1 csr 176540 vector 344 no address found for kl/dl-11

	comes from what appears to be a missing entry (or an entry that
	autoconfig can't find) in the /unix kernel symbol table.   One way,
	I think, this can happen is when booting an alternate kernel (/genunix
	instead of /unix).

	THe only suggestion I have at this point is to turn on debugging
	in autoconfig.   To do this go into /sys/autoconfig/main.c and
	add a line that forces 'debug = 1;', then install (after saving the
	original ;)) autoconfig into /etc and reboot.   Hopefully useful
	info about what autoconfig is doing will be printed.

>   Mine is at least correctly identified by autoconfig, though I've never
> attached a terminal to it to see whether the ports actually do anything.
> The post that's vanished included my dhv line from /etc/dtab but, except
> for the goofy CSR I used for some reason that I cannot now remember, it

	If I find the time I'll power up the 11/73 and see what it says but
	I've had a DHV11 on the system for years (it's how I got the RTS/CTS
	flow control working).

	My suspicion is that the DHV clone isn't behaving 100% like a DEC
	DHV card.

> > BTW: Never play with the SMD cables when the machine is running. Now I
> > get: 
> 
>   Is the disk write-inhibited?

	Doing a 'reboot' (which performs a sync(2) call) will overwrite
	what fsck has done - when the message about "reboot" comes out you
	should use the front panel or ODT to simply halt the cpu and then
	start the boot process cold.

	Cheers,
	Steven Schultz



^ permalink raw reply	[flat|nested] 16+ messages in thread
* [pups] 2.11BSD device config trouble
@ 2003-04-30 15:56 Steven M. Schultz
  2003-04-30 16:58 ` Jochen Kunz
  0 siblings, 1 reply; 16+ messages in thread
From: Steven M. Schultz @ 2003-04-30 15:56 UTC (permalink / raw)


Hi -

> From: Jochen Kunz <jkunz at unixag-kl.fh-kl.de>
> > > cn 1 csr 176540 vector 344 no address found for kl/dl-11
> > 	Is 'cn 1 ...' line 38 of the /etc/dtab file?
> Yes: 
> cn      1 176540 344    5       cnrint  cnxint

	Interesting.   I do not recall any particular problem getting 
	additional DL devices recognized (the 11/93 had 7 of them).

	Seeing the 'no address found' error is *strange* though - that
	would indicate that 'autoconfig' could not find 'cnrint' or 'cnxint'
	in the /unix symbol table.   Look at /sys/autoconfig and you can
	see where that message is coming from.

	If you do 

		nm /unix | egrep 'cnxint|cnrint' 

	what do you see?

> NKL             4               # KL11, DL11
> The card has four ports, one of them is the console. (The M8192 CPU card
> has no SLU / ROM / ...) 
	
	Ah, ok.   My 11/73 has a SLU/ROM card and the console is on that.  I
	also have a DHV installed (alas, the system is powered down now
	so I can not check for more information).

> But I would prefere to get the DHV11 working. It seams that this device
> is more suitable for multi user operation. 

	Yes, it's a little better.  Not as nice as a DHQ-11 though (which can
	run in DHU or DHV modes - with DHU mode having much better silo 
	handling).

	I forget the exact error you were getting on the DHV but if it was
	'no interrupt' then it might be that the DHV clone is not behaving
	exactly like a DEC DHV

	In /sys/autoconfig/dhvauto.c here is how the probing attempts to
	force an interrupt:

dhvprobe(addr,vector)
        struct dhvdevice *addr;
        int vector;
{
    if ( grab ( &(addr->dhvcsr) ) & DHV_CS_MCLR )
        DELAY(35000L);
    if ( grab ( &(addr->dhvcsr) ) & (DHV_CS_MCLR|DHV_CS_DFAIL) )
        return ( 0 );
    stuff ( DHV_CS_RI | DHV_CS_RIE, &(addr->dhvcsr) );
    DELAY(3500L);
    stuff ( 0, &(addr->dhvcsr) );
    return(ACP_IFINTR);
}

	Either 3500 microseconds (very approximately of course) is too short 
	of a wait _or_ the method of trying to generate an interrupt is 
	not correct.    You can try changing 'ACP_IFINTR' to 'ACP_EXISTS'
	which tells autoconf to not care if the device interrupted or not.

> ** Last Mounted on /
> ** Root file system
> ** Phase 1 - Check Blocks and Sizes
> ** Phase 2 - Check Pathnames
> ** Phase 3 - Check Connectivity
> ** Phase 4 - Check Reference Counts
> ** Phase 5 - Check Free List
> BLK(S) MISSING
> SALVAGE? y
> 
> ** Phase 6 - Salvage Free List
> 1364 files, 11625 used, 2430 free
> 
> ***** FILE SYSTEM WAS MODIFIED *****
> 
> But on the next reboot I get the same when running fsck. Any hints? 

	How are you rebooting?  With the "reboot" command or by using the
	'halt' button?   You do not want to use the 'reboot' command because
	that does a "sync" which flushes the disc cache (and superblock) back
	out to disc - that overwrites the work that 'fsck' did.

	A few 'missing' blocks is not a serious problem though and can be
	ignored.

	Cheers,
	Steven Schultz



^ permalink raw reply	[flat|nested] 16+ messages in thread
* [pups] 2.11BSD device config trouble
@ 2003-04-29 22:48 Steven M. Schultz
  2003-04-30  8:24 ` Jochen Kunz
  0 siblings, 1 reply; 16+ messages in thread
From: Steven M. Schultz @ 2003-04-29 22:48 UTC (permalink / raw)


Hi -

> From: Jochen Kunz <jkunz at unixag-kl.fh-kl.de>
> I am preparing my PDP-11/73 for my exhibition at the VCFe. I want to get
> the DHV11 (M3104) and a four port DLV11J clone to work. At the moment I
> get upon boot:
> 
> autoconfig: warning: more than three handlers for device cn on line 38.

	That is not a normal message.  I believe autoconfig is saying that
	is something wrong with line 38 of /etc/dtab 

> dhv ? csr 160440 vector 310 didn't interrupt.
> ra 0 csr 172150 vector 154 vectorset attached
> ra 1 csr 160334 vector 764 vectorset attached
> rx ? csr 177170 vector 264 skipped:  No CSR.
> tms 0 csr 174500 vector 260 vectorset attached
> ts 0 csr 172520 vector 224 attached
> cn 1 csr 176540 vector 344 no address found for kl/dl-11

> What is wrong with the "cn" devices? 

	Is 'cn 1 ...' line 38 of the /etc/dtab file?

	Did you compile a kernel with NKL set to 5 (1 for the console and
	4 for the DLV11J)?   

	Cheers,
	Steven Schultz



^ permalink raw reply	[flat|nested] 16+ messages in thread
* [pups] 2.11BSD device config trouble
@ 2003-04-29 21:54 Jochen Kunz
  0 siblings, 0 replies; 16+ messages in thread
From: Jochen Kunz @ 2003-04-29 21:54 UTC (permalink / raw)


[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #1: Type: text/plain, Size: 2244 bytes --]

Hi.

I am preparing my PDP-11/73 for my exhibition at the VCFe. I wane get
the DHV11 (M3104) and a four port DLV11J colne to work. At the moment I
get upon boot:

autoconfig: warning: more than three handlers for device cn on line 38.
dhv ? csr 160440 vector 310 didn't interrupt.
ra 0 csr 172150 vector 154 vectorset attached
ra 1 csr 160334 vector 764 vectorset attached
rx ? csr 177170 vector 264 skipped:  No CSR.
tms 0 csr 174500 vector 260 vectorset attached
ts 0 csr 172520 vector 224 attached
cn 1 csr 176540 vector 344 no address found for kl/dl-11

Extract from /etc/dtab:
# grep '^[a-zA-Z]' /etc/dtab
dhv     ? 160440 310    5       dhvrint dhvxint # dhv terminal mux
ra      ? 172150 154    5       raintr          # uda50, rqdx1/2/3
ra      ? 160334 764    5       raintr          # uda50, rqdx1/2/3
rx      ? 177170 264    5       rxintr          # rx01/02
tms     ? 174500 260    5       tmsintr         # tmscp driver
ts      ? 172520 224    5       tsintr          # ts11 driver
cn      1 176540 344    5       cnrint  cnxint
cn      2 176550 354    5       cnrint  cnxint
cn      3 176560 364    5       cnrint  cnxint

What is wrong with the "cn" devices? 

I checked the CSRs of the DHV11 and the DLV11J cards with the "show
qbus" command on a MicroVAX 4000-200 to be sure that the CSRs are where
I am expecting them:
>>>sh q
Scan of Qbus I/O Space
-20000120 (760440) = 009D DHQ11/DHV11/CXA16/CXB16/CXY08
-20000122 (760442) = F081
-20000124 (760444) = 0000
-20000126 (760446) = 0000
-20000128 (760450) = 0000
-2000012A (760452) = 0000
-2000012C (760454) = 0000
-2000012E (760456) = 0000
-20001940 (774500) = 0000 TQK50/TQK70/TU81E/RV20/KFQSA-TAPE
-20001942 (774502) = 0BC0
-20001D60 (776540) = 0000 DLV11J
-20001D62 (776542) = 0000
-20001D64 (776544) = 0080
-20001D66 (776546) = 0000
-20001D68 (776550) = 0000 DLV11J
-20001D6A (776552) = 0000
-20001D6C (776554) = 0080
-20001D6E (776556) = 0000
-20001D70 (776560) = 0000 DLV11J
-20001D72 (776562) = 0000
-20001D74 (776564) = 0080
-20001D76 (776566) = 0000
-20001F40 (777500) = 0020 IPCR
-20001F70 (777560) = 0000
-20001F72 (777562) = 0000
-20001F74 (777564) = 0080
-20001F76 (777566) = 0000
-- 


tschüß,
       Jochen

Homepage: http://www.unixag-kl.fh-kl.de/~jkunz/





^ permalink raw reply	[flat|nested] 16+ messages in thread

end of thread, other threads:[~2003-05-01 19:14 UTC | newest]

Thread overview: 16+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2003-05-01 19:14 [pups] 2.11BSD device config trouble Michael Sokolov
  -- strict thread matches above, loose matches on Subject: below --
2003-05-01 13:49 Norman Wilson
2003-05-01  4:04 Steven M. Schultz
2003-05-01  3:30 Carl Lowenstein
2003-05-01  3:48 ` Gregg C Levine
2003-04-30 18:43 Steven M. Schultz
2003-05-01  9:24 ` Jochen Kunz
2003-04-30 16:03 Steven M. Schultz
2003-04-30 15:56 Steven M. Schultz
2003-04-30 16:58 ` Jochen Kunz
2003-04-29 22:48 Steven M. Schultz
2003-04-30  8:24 ` Jochen Kunz
2003-04-30 13:40   ` David Evans
2003-04-30 16:23     ` Jochen Kunz
2003-04-30 16:59       ` David Evans
2003-04-29 21:54 Jochen Kunz

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