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I had a very tense few hours with a customer’s server yesterday. The fact that it’s a Small Business Server and thus, the “Everything Server”, didn’t make things much better. I did two things, and both turned out to be bad. I also didn’t reboot between the two things, which also turned bad to be even worse.

One. I installed the new service pack, which is a Good Thing (generally), except when the computer hangs at “setting up, stage 3 of 3, 0% ready” and spins the little circle thingy for half an hour. At that stage the “please do not turn off your computer” becomes stressful to ignore. So i leaned on the power button, chose to restart in Safe mode and everything seemed okay. For a while.

Two. I changed the network adapter to traffic at 1 Gb/s full duplex. This turned out to be catastrophic. And i fully blame HP for this. After a reboot into normal mode, i had no network. At all. And i was not able to open the HP network interface control panel thingy, since the “management database” was locked. Not even netsh would help me this time.

After much stressful head scratching and beard tearing, i hypothesized that HP NIC management is grumpy because it was in fact plugged into a switch that only goes to 100 Mb/s. Yeah, i can appreciate that it can’t traffic with the wrong line speeds but that i can’t turn that setting off is criminal. If that indeed was the case. So i plugged the server’s NIC into a backline giga-Ether switch (yeah, you shouldn’t do that either) and rebooted. And hey presto, the “management database” was no longer locked.

Back to 100/full, plug the server where it belonged, and normality is restored. Just in time to go and fetch the kids. Sysadmin feat in true Hollywood style.

I just wonder what those HP engineers were thinking about.

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I have teared enough hairs from my skull to make a rug trying to install Ubuntu Server 8.10 on a HP ProLiant DL360 server. The short answer is it will not work and the quick solution is install Ubuntu Server 8.04.1-LTS instead.

The longer answer is that has to do with the disks. The DL360 (and supposedly its sibling servers) use a RAID that Ubuntu 8.10 does not understand. It doesn’t matter if i tell it to enable or disable SATA RAID, or to use or not use LVM. The system installs nicely but after that, it just won’t boot. Same goes with both the x64 and x86 versions of Ubuntu Server 8.10. Since the RAID is enabled in hardware, i am supposing that my disks are mirrorred and that i’m protected on that plane. The 8.10 setting probably just allowed me to actually see that we have a RAID going on. Transparency is always nice.

I’ve read incoherent (at least to me) explanations that you should go and poke with Grub to get things right, but i couldn’t get a comprehensive enough explanation that i would know exactly what i was doing. So i decided not to be bothered. And then i read in another article that thou shalst screw the latest version and just go with the previous one, and things are nice and fine. You should even be able to update to the latest version over the command line, so you’ll get virtual machine support and all the other goodies the 8.10 provides.

There are two implications. One: install 8.04 and you’re up and running before your coffee gets cold (even in a well ventilated server room), or two: if you know exactly how to actually get 8.10 up and running with the RAID discovered, please tell me in the comments. Thank you.

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