qemu-kvm: file driver requires to be a regular file for ZFS volume
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qemu-kvm: file driver requires to be a regular file for ZFS volume

After one of the recent updates, a few KVM-based systems could not boot anymore. I am using ZFS for my emulated block devices, and I was happy with that until recently. Now – VMs won’t start, showing the error message in this post’s header. The source of the problem is rather nasty – qemu update…

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SecureBoot and VirtualBox kernel modules

Installing VirtualBox on Ubuntu 18 (same as for modern Fedora Core) with SecureBoot will result in the following error when running the command /sbin/vboxsetup The error message would be something like this: There were problems setting up VirtualBox. To re-start the set-up process, run /sbin/vboxconfig as root. If your system is using EFI Secure Boot…

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Dell Server admin tools (srvadmin) on Centos 5/XenServer

Recently, with the release of a new 8.x version of Dell SrvAdmin tools, the Centos/RHEL5 (and XenServer, by the way) repositories disappeared. It appears that Dell will not support the RHEL5.x brands anymore. The proper solution is to install the last 7 SrvAdmin tools, as can be shown in this site. This solves the problem…