Boot Linux Server installed on hardware RAID0 with SAS Modular Controller

dagu1992 · ‎04-12-2018

Hi everyone,

I have a problem with the server UCS C240 M4. I created a a virtual drive VD0 RAID0 from SAS MegaRAID and then i installed ubuntu server 17.10 on this virtual drive. All operations were ok, also the Grub but when I want to boot Ubuntu from this virtual drive it does not working. I also set the RAID controller for the boot sequence but nothing. What can I do? Thanks

Kirk J · ‎04-12-2018

Greetings.

I don't believe Ubuntu 17 has made it to interop matrix yet, so there aren't any notes or caveats related to it yet.

I would check the following:

OptionROM for Megaraid Sas controller is loaded (you should see this at post time, and have it list the connected drives and Virtual drives, etc
Boot order created for 'localhd' that references PCI slot # "HBA"
Drive size less than 2 TB if creating regular legacy bios type boot. UEFI and 2TB or greater require a number of additional steps.
We are talking about using the Megaraid Sas controller (12Gb), and not the onboard MegaraidSR unit?

Thanks,

Kirk...

dagu1992 · ‎04-13-2018

Thank you for the answer.

I wanto to add:

1) I'm using Cisco 12G SAS Modular RAID Controller

2) I made 2 virtual drive RAID0, one of 2 HDD of 1.2TB (total 2.4) and the second one of 6HDD with the same size (total 7.2TB). I installed Ubuntu 17.10 on the second one.

3) In the your first 2 steps we are talking about this controller or about HBA that I'm not using.

However, I'm going to check the first 2 steps.

Kirk J · ‎04-14-2018

Ok, so does sound like you are hitting the 2TB size, and will need to make sure you have UEFI enabled.

When you install you Ubuntu ISO, you need to make sure you are booting to UEFI mode, and choose the UEFI virtual KVM DVD. This should alert the Ubuntu installer that it needs to partition the UEFI boot partition, and create a UEFI boot table entry for your Ubuntu installation.

If you had not made the UEFI accommodations prior to the last install, you will need to reinstall via the UEFI environment.

Thanks,

Kirk...