** Description changed: + [ Impact ] + + Users of libvirt on Ubuntu Noble/Oracular are unable to query the I/O + throttle parameters of an image using virsh. + + [ Test plan ] + + TBD. + + [ Where problems could occur ] + + TBD. + + [ Original Description ] + Since Ubuntu 24.04, it is no longer possible to query the I/O throttle parameters of an image using Virsh. The issue occurs at least with libvirt-daemon version 10.0.0-2ubuntu8.4. The following error message appears: # virsh blkdeviotune test_vm sda error: Unable to get number of block I/O throttle parameters error: An error occurred, but the cause is unknown - How to reproduce: - Create a VM - Query the I/O throttle parameters of the image attached to the VM using Virsh - The error appears - The expected output should be: # virsh blkdeviotune test_vm sda total_bytes_sec: 0 read_bytes_sec : 0 write_bytes_sec: 0 total_iops_sec : 0 read_iops_sec : 0 write_iops_sec : 0 total_bytes_sec_max: 0 read_bytes_sec_max: 0 write_bytes_sec_max: 0 total_iops_sec_max: 0 read_iops_sec_max: 0 write_iops_sec_max: 0 size_iops_sec : 0 group_name : scsi0-0-0-0 total_bytes_sec_max_length: 0 read_bytes_sec_max_length: 0 write_bytes_sec_max_length: 0 total_iops_sec_max_length: 0 read_iops_sec_max_length: 0 write_iops_sec_max_length: 0 To be sure, I also compiled and tested the latest libvirt version from source, and the issue did not occur there. I also tested it on a Rocky Linux environment with the version shipped there (also version 10.0.0), and the problem did not occur either. This suggests that the issue is specific to the Ubuntu package. I also tried running the virsh command with LIBVIRT_DEBUG=1 to check for a clearer message, but I couldn’t gather much from it. Information about the system: - Ubuntu 24.04.1 LTS - libvirt-daemon 10.0.0-2ubuntu8.4 - virsh --version: 10.0.0 - 6.8.0-31-generic #31-Ubuntu
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2084136 Title: Unable to get number of block I/O throttle parameters To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/2084136/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
