[K12OSN] Re: K12OSN Digest, Vol 6, Issue 134
sarat rawat
saratrawat at yahoo.com
Tue Aug 31 04:40:08 UTC 2004
HI! All
I am experiencing problems with my RedHat 9. I have been using Redhat for a long time already and i installed the version 9 some time ago - without problems. last two week some command are not working anymore. "halt" is one of them . I am not able to shutdown RedHat anymore, If i try to reboot the system, i have similiar problems. In this case, however, the system does try to reboot, but at the end i get the message " INIT:no more processes left in this runlevel " i have to turn off the computer.
other error messages by rebooting :
"/etc/rc6.d /S01reboot: line 204 :/sbin/reboot: succes.
"/etc/rc6.d /S01halt: line 204 :/sbin/halt: succees.
Thanx
Sarat
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Today's Topics:
1. RE: Kernel Panic with SATA RAID (Jim Kronebusch)
2. Re: Too Many Open Files (Shawn Powers)
3. RE: Kernel Panic with SATA RAID (Jim Kronebusch)
4. Samba help (Krsnendu)
5. RE: Kernel Panic with SATA RAID (Les Mikesell)
6. RE: Kernel Panic with SATA RAID (Les Mikesell)
7. koncole '-session' '02394823489jf032948942jk..' This starts
on login??? (Brock Noland)
8. Re: A question about gigabit (Terrell Prud?, Jr.)
----------------------------------------------------------------------
Message: 1
Date: Mon, 30 Aug 2004 12:39:07 -0500
From: "Jim Kronebusch"
Subject: RE: [K12OSN] Kernel Panic with SATA RAID
To: "'Support list for opensource software in schools.'"
Message-ID: <003601c48eb8$4003e420$fb99060a at winonacotter.org>
Content-Type: text/plain; charset="Windows-1252"
> You should be able to change this by swapping the alias names
> in /etc/modules.conf and rebooting.
Cool. Just to be sure I understand this correctly let me verify. I
would install K12LTSP with the defaults (which will configure the cards
backwards). Then when the machine is completely loaded and finished I
would boot up and make the /etc/modules.conf swap, reboot and be running
fine. Let me know if this is inaccurate, otherwise I will assume it
correct and give it a try.
Thanks
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Message: 2
Date: Mon, 30 Aug 2004 12:55:24 -0400 (EDT)
From: "Shawn Powers"
Subject: Re: [K12OSN] Too Many Open Files
To: "Support list for opensource software in schools."
Message-ID:
<60941.12.32.72.67.1093884924.squirrel at www.inlandlakes.org>
Content-Type: text/plain;charset=iso-8859-1
I'm not worried about the bittorrent client itself -- it was just a tool
that SHOWED me there was a problem. When 70 more users come in tomorrow
to use use their thin clients, I'm sure they'll open more files than my
azureus client -- even it I *am* download an entire season of MacGyver. ;)
-Shawn
BTW, so far so good -- no more errors...
Huck said:
> can you not tweak your bittorrent client to reduce the number of files
> it tries to open?
> Those two windows bittorrent clients you sent me links for had that as
> an option...
>
> --Huck
>
>
> Shawn Powers wrote:
>
>>I always hate asking questions of the list when I'm so far behind (395
>>unread messages.. it's been a rough few weeks) -- but school is about to
>>start, and I'm getting a very scary message...
>>
>>When I am running azureus (a java bittorrent client) -- I am getting
>>errors that there are too many open files. I remember this being an
>> issue
>>a while back, so I searched the archives, and came across the
>> instructions
>>to edit /etc/sysctrl.conf -- BUT my default (4.0.1) installation already
>>has fs.file-max = 65536 at the bottom!!!
>>
>>Then, I got to thinking... perhaps I should check my NFS /home server,
>>which is running WBEL 3.0 -- I checked, and sure enough, there was no
>>mention of fs.file-max in the /etc/sysctl.conf file. I added it, ran
>>sysctl -p, and I'm waiting to see.
>>
>>My question, might that have solved the problem? It's a tough thing to
>>"test" because it's difficult to open 65,000 files at will... ;) Would
>>the file handles on my NFS server cause errors in applications on my LTSP
>>server?
>>
>>Thanks for any input,
>>-Shawn
>>
>>
>>
>
>
> _______________________________________________
> K12OSN mailing list
> K12OSN at redhat.com
> https://www.redhat.com/mailman/listinfo/k12osn
> For more info see
>
>
--
Shawn Powers
Technology Director
Inland Lakes Schools
PHN: 231-238-6868 x9174
FAX: 509-356-7024
spowers at inlandlakes.org
http://techcorner.inlandlakes.org
----
The views, opinions, visions, thoughts, comments, sarcastic whims,
forecasts, poetic outbursts, cynical wit, future plans, implementation
ideas, OS preference, curricular insight, ice cream preference, or
anything else I might infer are not the views of Inland Lakes Schools.
Pretty much everything I say, do, think, or imply with punctuation should
be considered my own delusions, and ignored completely.
------------------------------
Message: 3
Date: Mon, 30 Aug 2004 12:45:42 -0500
From: "Jim Kronebusch"
Subject: RE: [K12OSN] Kernel Panic with SATA RAID
To: "'Support list for opensource software in schools.'"
Message-ID: <003701c48eb9$2b90a450$fb99060a at winonacotter.org>
Content-Type: text/plain; charset="Windows-1252"
> The only thing even close that I've used is a 3ware IDE raid
> controller and it appears to the kernel as a SCSI device even
> though the drives are IDE. The rest of the box sounds fairly
> ordinary so I'd guess the problem is with the raid controller
> or driver. Depending on when it crashes, it may not have the
> modules needed to access the controller in the initial
> ramdisk. You load the kernel with bios calls, but when the
> kernel detects devices it has to be able to connect up the
> disk driver before it can do much else, so if the driver
> isn't built into the kernel the module has to be on the
> ramdisk.
This sounds like what is happening to me. I assumed that for some
reason the kernel saw the SATA as a SCSI controller and the reason for
the crash is the driver or something isn't right and since it can't
access the data correctly the kernel panics and I am done.
Any ideas on how to fix this or should I look at purchasing a new
controller that is known to work? If a new controller is the only way
does anyone know of a SATA controller known to work? At this point I
would rather eat a few hundred bucks than delay the server too long.
Thanks
---
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------------------------------
Message: 4
Date: Tue, 31 Aug 2004 06:22:23 -0700
From: "Krsnendu"
Subject: [K12OSN] Samba help
To:
Message-ID: <008101c48f5d$8d486940$0200a8c0 at harekrishna.school.nz>
Content-Type: text/plain; charset="us-ascii"
I want to set up my K12LTSP server as the file server for our small
school.
I was planning to link the My documents folders from each desktop
computer on the network to the homes partition of the server.
This way we can just backup the homes partition and all our data is
backed up in one go.
So that is my goal; here is where I need help.
1. I can't access SWAT through the network. From the server machine, if
I connect using localhost:901 it connects, but if I use the "ipaddress
of the server":901 it says the "document contains no data"
Using Opera on another machine it asks to download a zero size file
called status.
I have another samba server running on Vector Linux. I can connect to
this remotely without problems it is only the LTSP server that has
problems.
The firewall is turned off. I can ssh and run remote X sessions on LTSP.
It's just SWAT that doesn't connect at present.
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Message: 5
Date: Mon, 30 Aug 2004 13:30:52 -0500
From: Les Mikesell
Subject: RE: [K12OSN] Kernel Panic with SATA RAID
To: "Support list for opensource software in schools."
Message-ID: <1093890651.15864.15.camel at les-home.futuresource.com>
Content-Type: text/plain
On Mon, 2004-08-30 at 12:45, Jim Kronebusch wrote:
> > You load the kernel with bios calls, but when the
> > kernel detects devices it has to be able to connect up the
> > disk driver before it can do much else, so if the driver
> > isn't built into the kernel the module has to be on the
> > ramdisk.
>
> This sounds like what is happening to me. I assumed that for some
> reason the kernel saw the SATA as a SCSI controller and the reason for
> the crash is the driver or something isn't right and since it can't
> access the data correctly the kernel panics and I am done.
>
> Any ideas on how to fix this or should I look at purchasing a new
> controller that is known to work?
If you had a working machine to verify the module that needs
to be present, you might be able to fix it up by booting
the install CD with 'linux rescue', doing a chroot to
/mnt/sysinstall where your drives are mounted, fixing up
the modules.conf file, then doing a mkinitrd with your kernel
version numbers in the right places on the command line.
You might be wasting your time if the driver isn't actually
working, though.
> If a new controller is the only way
> does anyone know of a SATA controller known to work?
The 3ware IDE version works great and I'd expect the
driver side of the SATA version to be the same but
haven't used it myself.
> At this point I
> would rather eat a few hundred bucks than delay the server too long.
An intermediate fix might be to install the base system on
a different controller (single drives or mirrored IDE or
SCSI would work), then mount /var and /home partitions from
your raid controller if the only problem is booting from
it.
---
Les Mikesell
les at futuresource.com
------------------------------
Message: 6
Date: Mon, 30 Aug 2004 13:36:28 -0500
From: Les Mikesell
Subject: RE: [K12OSN] Kernel Panic with SATA RAID
To: "Support list for opensource software in schools."
Message-ID: <1093890988.15864.21.camel at les-home.futuresource.com>
Content-Type: text/plain
On Mon, 2004-08-30 at 12:39, Jim Kronebusch wrote:
> > You should be able to change this by swapping the alias names
> > in /etc/modules.conf and rebooting.
>
> Cool. Just to be sure I understand this correctly let me verify. I
> would install K12LTSP with the defaults (which will configure the cards
> backwards). Then when the machine is completely loaded and finished I
> would boot up and make the /etc/modules.conf swap, reboot and be running
> fine. Let me know if this is inaccurate, otherwise I will assume it
> correct and give it a try.
That should be right for a 2.4 kernel. Kernel 2.6 now has
an /etc/modprobe.conf file but it should work the same
way.
---
Les Mikesell
les at futuresource.com
------------------------------
Message: 7
Date: Mon, 30 Aug 2004 13:49:38 -0500
From: Brock Noland
Subject: [K12OSN] koncole '-session' '02394823489jf032948942jk..' This
starts on login???
To: "Support list for opensource software in schools."
Message-ID: <741dcbb804083011495098ecf8 at mail.gmail.com>
Content-Type: text/plain; charset=US-ASCII
I have an account that has the follwoing execute on login?
koncole '-session' '02394823489jf032948942jk..'
Where is this coming from and how do I remove it?
Brock
------------------------------
Message: 8
Date: Mon, 30 Aug 2004 14:59:19 -0400
From: "Terrell Prud?, Jr."
Subject: Re: [K12OSN] A question about gigabit
To: "Support list for opensource software in schools."
Message-ID: <41337907.7060609 at cmosnetworks.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Mark Cockrell wrote:
> Hello all,
> I've seen the recommendation for gigabit NICs in the K12LTSP server
> a number of times on this list and I have a question regarding that.
> Currently I have 10/100Mb switches in place, and when I set up my
> shiny new terminal server, I used only one NIC and just tied it into
> my existing network so that it can be accessed from anywhere on the
> LAN. So, here's my question: With everything else on my LAN being
> 10/100 would gigabit help me at all. I could buy a new gigabit switch
> and connect the server to it and it to the rest of my network, but it
> seems to me that I would just be moving the bottleneck up the stream a
> few inches. Is my thinking correct, or would a gigabit switch, even
> if it's the only one on the network, be advantageous? I welcome any
> thoughts on the subject.
>
You betcha it'll help, and the boxes on the same switch as the
gigabit-enabled K12LTSP server will notice the benefit the most. I also
use a single-NIC install, but my NIC is Gig-E, so my thin clients don't
really have any network bandwidth issues. See, X11 can suck up a lot of
traffic. If you are connecting this new gigabit switch to the rest of
the LAN via a 10/100 connection (say, a crossover cable), then the folks
"downstream" won't see as much benefit. They will probably see a little
bit because there's just more server bandwidth to share.
The way to do it, so that the entire school benefits, is to put Gig-E
links between all of your switches. This is what we do in my district,
and so it doesn't matter if you're physically next to the server or way
across the school in a distant wiring closet. The response time is the
same.
--TP
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