Redesigning Study Room

Date November 16, 2008

Today we redesigned the study room which is our control room. The HiFi installation, the PC’s, the Notebook, the Server .. (around 4 UTP connections are in the wall so short cables is the only thing we need).

The server was moved to the livingroom (yeah, we have UTP there as well) on Saturday. Around 16.00h Sunday we moved it back to the study again. No downtime .. the UPS is alive ;-) About 1 or 2 minutes 20 seconds no network activity. It’s patched through a main connection to the main switch so no extra switches are used.

A little geeky but if it’s working, it is working great.

CFULLHDMA: Trying to understand Samba

Date May 31, 2008

The Conceptronic CFULLHDMA has an automatical way of finding Samba Shares, to make life easy for customers. The device is using ’smbtree’ for this purpose. smbtree is a text based network browser.

As I do a lot of testings I suddenly did not get any samba share to see on the CFULLHDMA anymore. Bummer, a bug? let’s find out …

Normally I have 6!! Samba shared devices in my network. Suddenly, after rebooting a PC (XP) and a NAS I lost all Samba shares to bee seen in my CFULLHDMA, reboot, turn off / turn on .. nothing helped.

Analyzing I found out following:

the smbtree was generating an error on the CFULLHDMA.

smbtree
session request to 192.168.1.30 failed (Called name not present)
Data overflow in cli_receive_trans

the 192.168.1.30 is my printserver, turning off that device only gave totally no output on running smbtree.

Using the same utility ’smbtree’ on my Centos webserver (where aroundmyroom.com is running at) generated the same error. For me it meant that it was not a bug on my CFULLHDMA but a general ‘error’ within my network. Checking my network neighbourhood at my XP machine revealed only 1 samba share: a rebooted nas device I had to reset to factory defaults and modified on IP level again (fixed) and where I changed its Samba Share name as well. The rest of my shares were even not seen at my XP system, Linux Server or CFULLHDMA.

To solve the issue I did following:

I rebooted my DSL modem (router / dns / dhcp device) & I rebooted all devices with samba shares and ran the smbtree command at my webserver (not rebooted) again.

Now I saw all samba shares again: (excerpt)

DOMAIN
        \\RAID1                         RAID1
                \\RAID1\IPC$            IPC Service (RAID1)
                \\RAID1\Volume_1
        \\LAPTOP_LILIAN                 HP DV 9000
        \\DEVELOPMENT                   Testing device
                \\DEVELOPMENT\IPC$              IPC Service 
                \\DEVELOPMENT\test-share-remove test
                \\DEVELOPMENT\bordertown
        \\DENNIS-HP                     HP-DENNIS
                \\DENNIS-HP\IPC$                Externe IPC
                \\DENNIS-HP\Folder-DENNIS
        \\CH3SNAS                       Grab’n'GO Media Store
                \\CH3SNAS\Volume_1-1          Linux cifs
                \\CH3SNAS\lp                  USB Printer
                \\CH3SNAS\web_page            Enter Our Web Page Setting
                \\CH3SNAS\Volume_1

Starting the CFULLHDMA as well and I saw all my samba shares again. 

Personally I do think it has to do with DNS/DHCP and the DSL router, but further i have totally no clue why suddenly all my samba shares were gone and that I had to do restarts to have them appear again. Maybe someone with more indeep samba / windows share knowledge can explain more.
 

Upgrade internal network

Date March 11, 2008

Upgraded my internal network (home) with a new ‘dumb’ 16 port Gigabit (11″ rack version) switch for test.

Directly I saw issues with my network not being correctly wired (sigh) .. Causing the link to the internet to be down. After checking all wires finally found 2 wires causing some serious issues. Now all devices do have Gigabit, only my own PC is connected at 100MBit still so I will upgrade that probably later to check the performance.

Message to Self: CentOS 4.4 & Bluequartz

Date September 6, 2006

Onboard SIS900 network card issue with Centos 4.4 & Bluequartz and no network activity available even when all config info says it is (with Linux version 2.6.9-42.0.2.EL). Problem found in disabled APM / ACPI. When disabled the 2.6.9-42.0.2.EL will not be able to communicate through the network card. When enabling APM / ACPI it is.

This error was not seen when using Linux version 2.6.9-22.0.2.EL 

I removed all kernels in between and now CentOS together with my BlueQuartz services is running fine. Even when I will have a power shutdown again ;-) Enig klein probleem wat ik heel even tegen kwam, waren de 2 volgende meldingen:

Sep  6 19:26:49 wb kernel: CPU0: Running in modulated clock mode
Sep  6 19:26:54 wb kernel: CPU0: Temperature above threshold

Changed some BIOS settings this morning. Info of temperature is not measured. Maybe that’s a solution