Category: Technology

Select disk when installing SLES 12

When installing SLES(SUSE Linux Enterprise Server) 12, I find the installation may corrupt other OSs. For example, I have two disks: the first(/dev/sda) has been installed the Fedora, and I want to install SLES on disk 2(/dev/sdb) :

2

 

If no attention, the SLES may occupy both disks:

5

The solutions is select “Create Partition Setup...“: 6

Select the second disk:

3

Then “Next“, “Next“…. The SLES can do the partition automatically:

4

You can install SLES now.

 

Why does qemu complain “No IOMMU found. Unable to assign device”?

When follow How to assign devices with VT-d in KVM tutorial in KVM site, you may encounter qemu-system-x86_64complains:

......No IOMMU found.  Unable to assign device......

The root cause is the KVM_DEVICE_ASSIGNMENT configuration option is deprecated, and the code in kernel KVM part is like this:

#ifdef CONFIG_KVM_DEVICE_ASSIGNMENT
    case KVM_CAP_IOMMU:
        r = iommu_present(&pci_bus_type);
        break;
#endif

So you should use VFIO feature instead.

If you still to want to use KVM_DEVICE_ASSIGNMENT feature, please rebuild the kernel with KVM_DEVICE_ASSIGNMENT option on.

Reference:
A question about “CONFIGKVMDEVICE_ASSIGNMENT” configuration