Broken CD drive in O2, cause of massive sys slowdown?

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blakespot
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Broken CD drive in O2, cause of massive sys slowdown?

Unread postby blakespot » Sat Nov 26, 2016 5:21 pm

I recently pulled my O2 off the shelf and took it into my DC office so I can put it to use sometimes (inspired by that kid that's doing the 3-part SGI video now on YT).

So I get it in and there's a CD in the drive but I can't eject it. I finally get it working, but the door keeps opening as soon as I shut it. OVER AND OVER AGAIN. During reboot, after OS is up, etc. Seems drive itself is broken physically. So I held it shut thru one cycle and now it wont open, but it makes open closing noise. So, it's done.

BUT.

Now the SGI acts as if something is slowing it down by a factor of 5-10. Everything. After many reboots, also.

At boot there is a CD device not ready error now -- 2 of them at start. Could it be that the broken CD drive is somehow slowing the system by doing something odd to the SCSI subsystem or some such? Presumably disconnecting it would solve if so -- but wanted to ask if this is a known thing.

Thanks.





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Re: Broken CD drive in O2, cause of massive sys slowdown?

Unread postby Krokodil » Sat Nov 26, 2016 6:09 pm

I don't know about the slowness problem but...

The door problem is caused by the failure of a plastic part in the drive. It seems every O2 eventually develops this problem. Even my O2 does this. If I shove the tray in with moderate force, it usually stays shut.

Also try the eject and inject commands found on later versions of IRIX 6.5
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Re: Broken CD drive in O2, cause of massive sys slowdown?

Unread postby jirka » Sun Nov 27, 2016 1:31 am

Krokodil wrote:The door problem is caused by the failure of a plastic part in the drive. It seems every O2 eventually develops this problem.


So the problem is in the drive itself? Not it the added plastic parts (the blue one) or so? I noticed that the drive opens randomly, too. But only if there is no CD loaded.

For the Blakespot's machine I would suggest to disconnect the drive it there are SCSI errors.
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Re: Broken CD drive in O2, cause of massive sys slowdown?

Unread postby josehill » Sun Nov 27, 2016 9:46 am

blakespot wrote:I recently pulled my O2 off the shelf and took it into my DC office so I can put it to use sometimes...{snip}...
Now the SGI acts as if something is slowing it down by a factor of 5-10. Everything. After many reboots, also.


Did you update the network settings to work with the DC office network? In my experience, 90% of the time an IRIX machine is dramatically slower than expected, it's because the network settings (especially DNS) are incorrectly configured or it is trying to mount an NFS share listed in /etc/fstab that is not accessible on the net.

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Re: Broken CD drive in O2, cause of massive sys slowdown?

Unread postby Krokodil » Sun Nov 27, 2016 10:56 am

jirka wrote:
Krokodil wrote:The door problem is caused by the failure of a plastic part in the drive. It seems every O2 eventually develops this problem.


So the problem is in the drive itself? Not it the added plastic parts (the blue one) or so? I noticed that the drive opens randomly, too. But only if there is no CD loaded.

For the Blakespot's machine I would suggest to disconnect the drive it there are SCSI errors.


Yeah, it's inside the drive. More on that from sgistuff.net

CD-ROM Failure

What to do when the drive tray is stuck / won't work.

The CD-ROM drive used in O2 systems is a drive made by Toshiba. A common point of failure for these devices is a gear in the mechanism that opens/closes a tray. If the gear is pushed from the motor shaft it has to be installed on the CD-ROM door will refuse to open or will not close.

To fix the problem the O2 has to be disassembled so far that the CD-ROM drive can be removed. The top cover of the CD-ROM drive also has to be removed and the small -usually white- gear has to be placed back on the empty motor shaft.
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Re: Broken CD drive in O2, cause of massive sys slowdown?

Unread postby blakespot » Mon Nov 28, 2016 5:43 am

josehill wrote:
blakespot wrote:I recently pulled my O2 off the shelf and took it into my DC office so I can put it to use sometimes...{snip}...
Now the SGI acts as if something is slowing it down by a factor of 5-10. Everything. After many reboots, also.


Did you update the network settings to work with the DC office network? In my experience, 90% of the time an IRIX machine is dramatically slower than expected, it's because the network settings (especially DNS) are incorrectly configured or it is trying to mount an NFS share listed in /etc/fstab that is not accessible on the net.

Ahh, it was fast and fine when I first booted it up in the office because I was pointing at my old home IP address, so networking failed right out. More recently I configured things following a forum post to get DHCP working, and I get connectivity (can telnet to my office Mac's IP for instance) but DNS lookups aren't working. This is about the time it slowed down. And yes --- it is trying to connect to an NFS share I had setup at home, that it isn't going to be able to connect to. That's be it. I disable this in fstab?

Thanks.
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Re: Broken CD drive in O2, cause of massive sys slowdown?

Unread postby josehill » Mon Nov 28, 2016 6:24 am

blakespot wrote:Ahh, it was fast and fine when I first booted it up in the office because I was pointing at my old home IP address, so networking failed right out. More recently I configured things following a forum post to get DHCP working, and I get connectivity (can telnet to my office Mac's IP for instance) but DNS lookups aren't working. This is about the time it slowed down. And yes --- it is trying to connect to an NFS share I had setup at home, that it isn't going to be able to connect to. That's be it. I disable this in fstab?

Yep. Just comment out the problematic NFS entry in fstab by adding a # to the beginning of the line. (I always recommend making a backup copy of /etc/fstab before editing it.)

For DNS, just add the correct domain and nameserver info to /etc/resolv.conf (see http://www.nekochan.net/wiki/IRIX_Insta ... tomization or http://www.blacksheepnetworks.com/secur ... config.htm for examples). Again, it is wise to backup resolv.conf before making any changes.

While you're at it, double check that the proper route is declared in /etc/config/static-route.options, too.

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Re: Broken CD drive in O2, cause of massive sys slowdown?

Unread postby blakespot » Mon Nov 28, 2016 8:14 am

Uh oh...

I came in this morning and fired up the O2 and I hear it chime and the LED is green, but the 1600SW is dark. It's LED went from amber to green and is remaining green, and the panel is clearly lit (but "black"), but there's nothing on the screen. I've verified the cable connection. I disconnected Ethernet fwiw.

So there are deeper problems, unrelated it would seem, with this O2, sadly.

Any ideas? Is there a magic diagnostic key sequence at boot? Thanks...




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Re: Broken CD drive in O2, cause of massive sys slowdown?

Unread postby blakespot » Tue May 02, 2017 1:21 pm

Ok, picking this thread back up from Nov last year.

I powered on the O2 and it boots up fine - no black screen as before... But it's still extremely slow to launch an app after boot. I wanted to post the msgs I get as the boot unfolds:

Image
IRIX network error on boot by Blake Patterson, on Flickr

Is it just editing the FSTAB and commenting out items that I need to do here? Thanks.



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Re: Broken CD drive in O2, cause of massive sys slowdown?

Unread postby uunix » Tue May 02, 2017 3:00 pm

Once it's up, start your network settings again (via System manger), giving everything fresh entries and then modify for your gateway. reboot in between these two stages.
Check your hosts, DNS settings. it looks like a machine has your IP address or, as I have found in the past there is a name/IP conflict with an earlier entry on the same machine.
Clear out you /etc/fstab also, except obviously the top line which should be the local system drive.

tcl is an additional network card no?
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Re: Broken CD drive in O2, cause of massive sys slowdown?

Unread postby jan-jaap » Wed May 03, 2017 12:54 am

* You've got ESP enabled. ESP can take a lot of time to start and doesn't bring you anything (it's for customers with valid support contracts). Disable it from IRIX with 'chkconfig esp off'

* Your system has a public IP address (172.25.x.y). That's uncommon and probably not what you want.

* You system has an IP address conflict with another system. The MAC address (74:46:a0:x:x:x) indicates that the other system is an HP.

Unless you really know what you're doing and are willing to edit config files I would avoid DHCP with IRIX.
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Re: Broken CD drive in O2, cause of massive sys slowdown?

Unread postby blakespot » Wed May 03, 2017 9:16 am

Ok, following info here and a DHCP guide for 6.5, I have networking working fine now. I can telnet, access web, etc.

I carried out disabling esp.

Still, things are slow. The lag is between launching an app and it appearing. Especially soon after boot. Once it's up, it runs fine. I can browse pretty swiftly and scroll smoothly with links -g.

Note that at one point in an earlier location, I had NFS running on the box. Well, was tying to a Mac drive on LAN. Other ideas?

Thanks


Edit: Seems I removed the NFS line in fstab so that shouldn't be the problem.


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Re: Broken CD drive in O2, cause of massive sys slowdown?

Unread postby kjaer » Wed May 03, 2017 11:02 am

it's going to continue to be slow until you either get it on the network configured well enough to use DNS, or change nsswitch.conf from "hosts: dns files" to "hosts:files dns". I recommend fixing nsswitch.conf.
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Re: Broken CD drive in O2, cause of massive sys slowdown?

Unread postby kjaer » Wed May 03, 2017 11:03 am

...and make sure you have correct entries for the local machine in /etc/hosts.
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Re: Broken CD drive in O2, cause of massive sys slowdown?

Unread postby blakespot » Wed May 03, 2017 1:09 pm

It is on the network via DHCP and is resolving domains fine, as I've pointed it to our office LAN's DNS. Is that configured well enough?

I can telnet to bbs.fozztexx.com and it connects right away. I can go to http://bytecellar.com in a browser. Not needing to use IP #s.

Last change I made was declaring gateway route in /etc/config/static-route.options. Thanks.

I don't see nsswitch.conf anywhere on the box, as well.
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