Attaching disk to XenServer Guest

Very useful post here
http://kiekeboe100.hoefman.be/blog/2009/06/attaching-disk-to-xenserver-guest/

One thing is missing ,notice also to match the ID you get from the udevtest output

Realtek NIC and xenserver 5.6 FP1

If you cannot connect to the network after upgrade ,see this very  useful post .
It helped me

Edit : In case it disapper from the net ,here is the main issue :

Update 2[solution]
add the following line to /etc/modprobe.conf

options r8169 use_dac=1

reboot XenServer!

How To:

vi /etc/modprobe.conf

press i for “insert”

add options r8169 use_dac=1

press ESC (exit insert mode)

:w (save file)

:q (exit file)

reboot from console

modprobe.conf should look like:

alias eth0 r8169

options r8169 use_dac=1

Shame on you Gigabyte

I really love Gigabyte products.Especially the ultra durable concept. Their MB usually just works for ages with no maintenance, But nothing prepared me to the GA-EP45-UD3LR MB experience.

First I run it with 2 Kingston value DDR3 1333 memory sticks of 2 GB each ,it run quite smoothly for a month or so ,until one stormy night i decided that i should not relay on my home UPS and shut down the machine. After two days I got the power back on it started for 20 second and shutdown ,and did not response to power for several minutes . After 10 times I decided to do what i should have done 8 times ago ,Google it . It seems that those boards suffer from some design and QA faults.It all suppose to be fixed by a BIOS update , but my board did not power up enough for me even check the bios version. Since it still in it 3 year warranty I RMA it.

The new board had suffer from the same symptoms , but this time I did got to see it has the latest BIOS version. After long 2 days of frustration  which include change some BIOS setting ,reboot ,check to whether it holds and wait 10 minutes for the power to get back i found out that running in "optimize settings " with dropping down the DDR speed to 800 MHz will have the board run smoothly enough to find out the the on board  NIC is malfunction ....

RMA and got a new board which did not response the the previous trick ... HELL with it ! Just a minute before RMA it for anther MB model i tried "load fail safe settings" which , to my surprise  , worked ( it did not worked for the second board ).

Well it worked for 2 weeks ,enough for me to understand that 4 GB is not sufficient for this project.

DDR3 prices dropped below 60$ for a 4GB piece , so i bought 4 Patriot PSD32G1333KH models (with heat shield ).Which did worked OK with the MB ( did not have any power up problems) .I started to load the Xen server , but it kept freezing ,so Memtest was called to action.

It did pass the first 40% of the test until 93 errors were found.
OK started to run memtest for each model ,which pass 100% with no errors ( about 1-1:30 hour each ) ,but  when inserting 2 models he test failed

Puzzled and frustrated ,but armed with previous experience I've tried to under-clock my RAM to 800 MHz ,It passed Memtest. Twice, with 2 ,and 4 sticks ! But it was too slow ( Memtest showed about 3800 MB/s ,while on 1333 MHz it was about 5000 MB/s ) , i got it up to 1066 MHz and it pass the test once again ,i decided that 4800 MB/s should be enough and stopped there.

Bottom line:

• I strongly recommend you to stay away from  GA-EP45-UD3LR , it looks great but will pass you throw hell with memory compatibility.
• I do have a lot of experience with Gigabyte  MB in the past 5 years (bought it to family and friends) . Never had any problems ,so i will continue to buy from them.
• If you having problems with this board ,try under clocking to 800 MHz and 1066 MHz 

Please comment this post (or any other) if it helped you or not