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<p>Funny you should send this; I had just been thinking about a few
things:</p>
<p><font color="red"><b>First</b></font>, when you bring everything
back online, this is what I am currently seeing:<br>
</p>
<p><font size="4" face="monospace">@i dec<br>
Local DECNET node: TOMMYT. Nodes reachable: 15.<br>
Accessible DECNET nodes are: A2RTR APOLLO BOINGO DOGPAK
ELITE GLDRTR GRUNT<br>
HUNTER HUSKY JACKAL ODST OSIRIS THEPIT TOMMYT VENTI2</font><font
face="monospace"><br>
</font></p>
<p><font size="4"><tt>NCP>shoW acTIVE nODES </tt><tt><br>
</tt><tt>NCP></tt><tt><br>
</tt><tt>14:48:02 NCP</tt><tt><br>
</tt><tt><br>
</tt><tt>Request # 1449; Show Active Nodes Summary Completed</tt><tt><br>
</tt><tt><br>
</tt><tt> Node State Active Delay
Circuit Next node</tt><tt><br>
</tt><tt> links</tt><tt><br>
</tt><tt> 2.291 Reachable NI-0-0
2.1023 (A2RTR) </tt><tt><br>
</tt><tt> 2.292 (OSIRIS) Reachable NI-0-0
2.1023 (A2RTR) </tt><tt><br>
</tt><tt> 2.293 (ODST) Reachable NI-0-0
2.1023 (A2RTR) </tt><tt><br>
</tt><tt> 2.294 (HUNTER) Reachable NI-0-0
2.1023 (A2RTR) </tt><tt><br>
</tt><tt> 2.295 (JACKAL) Reachable NI-0-0
2.1023 (A2RTR) </tt><tt><br>
</tt><tt> 2.296 (ELITE) Reachable NI-0-0
2.1023 (A2RTR) </tt><tt><br>
</tt><tt> 2.297 (GRUNT) Reachable NI-0-0
2.1023 (A2RTR) </tt><tt><br>
</tt><tt> 2.299 (THEPIT) Reachable NI-0-0
2.1023 (A2RTR) </tt><tt><br>
</tt><tt> 2.399 (BOINGO) Reachable NI-0-0
2.1023 (A2RTR) </tt><tt><br>
</tt><tt> 2.400 (APOLLO) Reachable 0 1 NI-0-0
2.1023 (A2RTR) </tt><tt><br>
</tt><tt> 2.520 (TOMMYT) On
0 </tt><tt><br>
</tt><tt> Identification = Tommy Timesharing</tt><tt><br>
</tt><tt> 2.522 (VENTI2) Reachable 0 1
NI-0-0 2.522 (VENTI2)</tt><tt><br>
</tt><tt> 2.609 (HUSKY) Reachable NI-0-0
2.1023 (A2RTR) </tt><tt><br>
</tt><tt> 2.622 (DOGPAK) Reachable NI-0-0
2.1023 (A2RTR) </tt><tt><br>
</tt><tt> 2.699 (GLDRTR) Reachable NI-0-0
2.1023 (A2RTR) </tt><tt><br>
</tt><tt> 2.1023 (A2RTR) Reachable NI-0-0
2.1023 (A2RTR) </tt></font><br>
</p>
<p><font color="red"><b>Second</b></font> is VENTI; I had wanted to
test something on it and it doesn't appear to be online.</p>
<p><font color="red"><b>Third</b></font> is the DECnet-10 COM911
drop dead date of November 9<sup>th</sup> is now about three weeks
away (23 days). This will crash <font size="4"><tt>VENTI</tt></font>
if it is up and force you to enter a bogus date and hope it's not
pulling the right date from anything. That can happen on a KL,
but I don't know about a KS.</p>
<p>I posted a patch to work around the issue and make Tops-10 act
like OpenVMS in this regard on December 28<sup>th</sup> of last
year. Had you had any interest in trying it?<br>
</p>
<div class="moz-cite-prefix">
<p>In <font size="+1"><tt>D36COM.MAC</tt></font> at <font
size="+1"><tt>NMXTIM+</tt></font>9, change the following two
lines (which skip or fall into the <font size="+1"><tt>COM911
BUGHLT</tt></font>),<br>
</p>
<p><font size="+1"><tt> SKIPL T2 ;MAKE SURE
WE HAVE A POSITIVE NUMBER OF SECONDS</tt><tt><br>
</tt><tt> TDNE T1,[XWD -1,600000] ;MAKE SURE NO DATE
OVERFLOW</tt></font><br>
</p>
<p>to</p>
<font size="+1"><tt> SKIPGE T2 ;Do WE HAVE A
POSITIVE NUMBER OF SECONDS?</tt><tt><br>
</tt><tt> MOVMS T2 ; No. Fine, now we're
plenty positive</tt><tt><br>
</tt><tt> TDZA T1,[XWD -1,600000] ;MAKE SURE never any
DATE OVERFLOW ever</tt></font></div>
<div class="moz-cite-prefix"><br>
</div>
<div class="moz-cite-prefix"><b><font color="red">Fourth</font></b>
(and final) concerns RAID in an indirect way. My Tops-20 systems
are backed up on a quarterly basis and those backups compressed
and moved to alternate storage. However, I have never backed up
any of the Ubuntu systems and, although I am running SSD media,
some of this is quite old and I'm starting to feel uncomfortable
out it.</div>
<div class="moz-cite-prefix">
<p>Were you aware of any winning backup solutions? I can restore
Tops-20 to bare metal, but I really don't remember how to do
this for Unix (although I did know it for Ultrix at one point).
So I starting looking. Déjà Dup looks like it won't quite do
what I need, but since it uses duplicity, I started looking at
that.<br>
</p>
</div>
<div class="moz-cite-prefix">Remember, even a RAID is no substitute
for backup. This was probably more true in the days where a
hardware RAID controller error introduced a single point of
failure; it may still be true for a software RAID.<br>
</div>
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<p class="MsoNormal">On 10/17/21 12:03 PM, Robert Armstrong
wrote:<br>
<br>
A2RTR will be down tomorrow (Monday) for a couple of hours
sometime between 9AM PDT and 3PM. It’s not my doing –
PG&E is replacing a transformer and the power will be
off. I have battery backup for some of my equipment, but not
A2RTR. Sorry.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"> It’s also going to have to go down
sometime again, maybe next weekend, so I can replace a disk
drive that’s failing. I bought two identical drives and plan
to set up a RAID 1 array this time. If anybody has set up a
software RAID on Ubuntu, using the md driver and mdadm, for
the system drive and you have advice, let me know. Espcially
if you managed to make both of the drives bootable.<o:p></o:p></p>
<p class="MsoNormal"><br>
Bob<o:p></o:p></p>
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