... Just a fun note; when I did POS (packet_over_sonet) that most high_speed internet links
10G and 40Gbit is using today, I basically copied DDCMP minus the
retransmission of broken packets part. It's byte_syncrounous.. -:) (As
we could not fit the HDLC bit_stuffing in the FPGA of 1995 at OC3/STM1
(155Mbit) speed.)
-P
H lscher wrote:
Hi,
what is the status of DDCMP within Linux-DECnet?
I did start a hacked version a long time ago but it's quite far from
being a working piece of software. This was wholly in userspace because
it made life easier for me. To do it 'properly' it should be implemented
as a line discipline in the kernel but that looked like far too much
hard work!
I would be happy to post what I have if anyone wants to work on
finishing it. But it's probably easier to just follow the specification
and start it again that work on someone else's unfinished code. As Paul
said, the specification is very clear. Surprisingly ;)
Chrissie
I started on that long ago; didn't get very far. (I have sample code but unfortunately it's in Macro-11 and interfaces to a RSTS terminal driver rather than the Linux line discipline stuff.)
It isn't hard, actually. You can take the DDCMP specification and just implement what it says; the spec is good enough that doing so will result in a correct implementation.
paul
-----Original Message-----
From: owner-hecnet at Update.UU.SE [mailto:owner-hecnet at Update.UU.SE] On Behalf Of H lscher
Sent: Wednesday, October 01, 2008 12:05 PM
To: hecnet at Update.UU.SE
Subject: [HECnet] DDCMP status
Hi,
what is the status of DDCMP within Linux-DECnet?
Is there any chance that it gets finished (or at least started) in the near future?
Regards,
Ulli
On Wed, 17 Sep 2008 21:50:57 +0100, you wrote:
Yeah, that went really smoothly. Btw, I've got a spare hardware raid
controller I bought off ebay for some random reason.
I'd be willing to trade it for say a SCSI drive with a SCA connector..
Another couple of links for you, the second might be especially interesting:
http://starlet.deltatel.ru/~Laishev/kits/cc073.dcx_axpexehttp://starlet.deltatel.ru/~Laishev/kits/hp-i64vms-c-v0703-018-1.pcsi$compr…
My Itanium friend will be back tomorrow and said that he will tell me/you
which disk+tray model you'll have to look for on ebay for your system. If I
did understand it right, there are many HP disk models suitable for it because
they're the same used by HP for one of their most common storage arrays. The
only nuisance is the colour: white instead of black... Will you bare that? :-P
Unfortunately he hasn't any spare SCA disk to exchange. Speaking about the
RAID controller: when back at home he'll check if it is a model he is
interested in, then maybe he'll contact you directly to ask if you will sell
it for money or to find something interesting for you to make a deal.
BTW, where are you located? London?
G.
P.S.: Is my English understandable? I'm constantly trying to improve it and to
write as correctly as I can, but sometimes I feel very bad at writing... :-)
Yeah, that went really smoothly. Btw, I've got a spare hardware raid controller I bought off ebay for some random reason.
I'd be willing to trade it for say a SCSI drive with a SCA connector..
Sampsa
On 17 Sep 2008, at 21:46, gerry77 at mail.com wrote:
On Wed, 17 Sep 2008 14:29:23 +0100, you wrote:
No sorry, didn't realise I needed any licenses for those. I run KZPACs
(DRxx devices) on both my Alphas, and just use the AlphaBIOS
management utility when I need it.
Evidently DEC used the same device designation for more than one device type.
So DRxx are both hardware and software RAID devices (and I suspect they were
also some very old device designation back when disks were removable).
Obviously the harware feature doesn't need any PAK, but the software one...
G.
P.S.: Did you succeed in installing I64 OpenVMS via InfoServer?
On Wed, 17 Sep 2008 14:29:23 +0100, you wrote:
No sorry, didn't realise I needed any licenses for those. I run KZPACs
(DRxx devices) on both my Alphas, and just use the AlphaBIOS
management utility when I need it.
Evidently DEC used the same device designation for more than one device type.
So DRxx are both hardware and software RAID devices (and I suspect they were
also some very old device designation back when disks were removable).
Obviously the harware feature doesn't need any PAK, but the software one...
G.
P.S.: Did you succeed in installing I64 OpenVMS via InfoServer?
On 17 Sep 2008, at 13:42, gerry77 at mail.com wrote:
On Tue, 16 Sep 2008 20:15:48 +0100, you wrote:
I'm tempted to ask on c.o.v. but am a bit worried people would take it
the wrong way.
I do agree with you. Some people seems to say "I do not want to understand".
Months ago I asked something about V5.5-2 and they did not ansewer my question
but suggested to upgrade to Alpha... :-P
Yeah, I got a right bollocking for summarising the DEFCON slides in the wrong way or something. There are some grumpy grumpy old men on that group, but overall they can be very helpful and friendly.
I think it's insane that they hand out all these licenses but then no
software, what's the point?
Yes, quite strange. Not only they do offer licenses for layered products not
easily available to Hobbyists, but even the operating system itself is not
officially available. A strange position indeed. BTW, speaking about licenses:
do you happen to have any licenses not present in the usual Hobbyist offering?
E.g. we are looking for host based RAID licenses (DRxx: devices) since about
two years, to no avail! :-|
No sorry, didn't realise I needed any licenses for those. I run KZPACs (DRxx devices) on both my Alphas, and just use the AlphaBIOS management utility when I need it.
Sampsa
On Tue, 16 Sep 2008 20:15:48 +0100, you wrote:
I'm tempted to ask on c.o.v. but am a bit worried people would take it
the wrong way.
I do agree with you. Some people seems to say "I do not want to understand".
Months ago I asked something about V5.5-2 and they did not ansewer my question
but suggested to upgrade to Alpha... :-P
I think it's insane that they hand out all these licenses but then no
software, what's the point?
Yes, quite strange. Not only they do offer licenses for layered products not
easily available to Hobbyists, but even the operating system itself is not
officially available. A strange position indeed. BTW, speaking about licenses:
do you happen to have any licenses not present in the usual Hobbyist offering?
E.g. we are looking for host based RAID licenses (DRxx: devices) since about
two years, to no avail! :-|
G.
