I'm trying to install NexentaStor on Ubuntu 12.04 LTS KVM on AMD64 platform. During the install I encounter the following exception :

"unknown trap type 8 in user mode"

Can anyone point me what can be the issue ?


  • I'm not sure that this is a supported setup. – ewwhite Jun 3 '13 at 6:15

I believe this has to do with the Solaris kernel version and patchset that is on NexentaStor 3.x (I don't think you'll see this on 4.x+ once it is released, though don't quote me - I think it still says it, but then boots anyway).

I've had a heck of a time keeping KVM VM's of NexentaStor stable, it isn't presently supported on the 3.x line by Nexenta themselves -- but all the ones that are have '-no-acpi' set. The command line set that I last used that worked (on 3.1.1 I believe), was (and it has been awhile since I tried this) included these: -no-acpi -nographic -no-kvm-irqchip .


had this error on a vm after setting the RAM to the OS recommended minimum of 800. Once I increased it from 800 to 2048, the error disappeared. problem could be related to not enough RAM

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