Still works: $ apt install --reinstall qemu-block-extra (this is like an upgrade to itself)
files match root@f:~# md5sum /var/run/qemu/1_4.2-3ubuntu2~ppa4_/* /usr/lib/x86_64-linux-gnu/qemu/block* e5fae910ca4c3c726ae0491a2cdab507 /var/run/qemu/1_4.2-3ubuntu2~ppa4_/block-curl.so f780837ec4678eb783baecfab43fa2c1 /var/run/qemu/1_4.2-3ubuntu2~ppa4_/block-iscsi.so 34795eba24a8445621328562e0d953f2 /var/run/qemu/1_4.2-3ubuntu2~ppa4_/block-rbd.so 399dfc7f7912506ff96c3b96ed90a6eb /var/run/qemu/1_4.2-3ubuntu2~ppa4_/block-ssh.so e5fae910ca4c3c726ae0491a2cdab507 /usr/lib/x86_64-linux-gnu/qemu/block-curl.so f780837ec4678eb783baecfab43fa2c1 /usr/lib/x86_64-linux-gnu/qemu/block-iscsi.so 34795eba24a8445621328562e0d953f2 /usr/lib/x86_64-linux-gnu/qemu/block-rbd.so 399dfc7f7912506ff96c3b96ed90a6eb /usr/lib/x86_64-linux-gnu/qemu/block-ssh.so Removing the original one to force fallback: mv /usr/lib/x86_64-linux-gnu/qemu/block-curl.so /usr/lib/x86_64-linux-gnu/qemu/orig.block-curl.so.orig root@f:~# lsof -p $(pidof qemu-system-x86_64) | grep block <nothing> Loading: DEBUG: trying to load module: /usr/lib/x86_64-linux-gnu/qemu/block-curl.so DEBUG: trying to load module: /usr/bin/../block-curl.so DEBUG: trying to load module: /usr/bin/block-curl.so DEBUG: trying to load module: /var/run/qemu/Debian_1_4.2-3ubuntu2~ppa4/block-curl.so Two differences left: 1. the binary has the "Debian_" prefix. that is from Debian rules (silly) but easy to fix --with-pkgversion="Debian $(DEB_VERSION)" => Prepending that in our templating as well 2. The effective dir has a suffix _ /var/run/qemu/1_4.2-3ubuntu2~ppa4_ That is from PKGVERSION substitution, since we use the inverted set it replaces the EOL Using printf will not add that and behave in d/rules like the binary -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1847361 Title: Upgrade of qemu binaries causes running instances not able to dynamically load modules To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/1847361/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs