On Wed, Jul 14, 2021 at 10:10:35AM +0200, arjen-libvirt@xxxxxxx wrote: > Hi List, > > some version info: > ]# /usr/libexec/qemu-kvm -version > QEMU emulator version 4.2.0 > (qemu-kvm-4.2.0-48.module+el8.4.0+534+4680a14e) Copyright (c) 2003-2019 > Fabrice Bellard and the QEMU Project developers > > ]# virsh version > Compiled against library: libvirt 6.0.0 > Using library: libvirt 6.0.0 > Using API: QEMU 6.0.0 > Running hypervisor: QEMU 4.2.0 > > information about block devices for one specific guest: > ]# virsh qemu-monitor-command uat-win201202.uat.gugu.be --hmp info block > libvirt-2-format: > /data/kvm/storage/diskimages01/uat-win201202_disk1_C.qcow2 (qcow2) > Attached to: /machine/peripheral/virtio-disk0/virtio-backend Cache > mode: writeback > > ide0-0-0: [not inserted] > Attached to: ide0-0-0 > Removable device: not locked, tray closed > > > But then, when I want to resize the block device, I just cannot seem to > find the correct device. I tried all of these: > > virsh qemu-monitor-command uat-win201202.uat.gugu.be --hmp block_resize > libvirt-2-storage 48G > Error: Cannot find device=libvirt-2-storage nor node_name= > > virsh qemu-monitor-command uat-win201202.uat.gugu.be --hmp block_resize > drive-libvirt-2-storage 48G > Error: Cannot find device=drive-libvirt-2-storage nor node_name= > > virsh qemu-monitor-command uat-win201202.uat.gugu.be --hmp block_resize > virtio-disk0 48G > Error: Cannot find device=virtio-disk0 nor node_name= > > virsh qemu-monitor-command uat-win201202.uat.gugu.be --hmp block_resize > drive-virtio-disk0 48G > Error: Cannot find device=drive-virtio-disk0 nor node_name= > > In a previous qemu version this worked (EL 7). Can someone help me out? Libvirt has changed the way it configures disks with QEMU to use the modern -blockdev argument. I expect this impacts your usage, but I dont know what the correct naming should be. Ignoring that though, why are you even using qemu-monitor-command in the first place ? Libvirt directly supports live block resizing via the 'virsh blockresize' command Regards, Daniel -- |: https://berrange.com -o- https://www.flickr.com/photos/dberrange :| |: https://libvirt.org -o- https://fstop138.berrange.com :| |: https://entangle-photo.org -o- https://www.instagram.com/dberrange :|
