Comment 20 for bug 1719579

------- Comment From <email address hidden> 2018-02-27 08:04 EDT-------
With Ubuntu 18.04

1. without --bypass-cache qemu errors out,

# virsh save virt-tests-vm1 /var/tmp/save.file

Domain virt-tests-vm1 saved to /var/tmp/save.file

# virsh restore /var/tmp/save.file
error: Failed to restore domain from /var/tmp/save.file
error: internal error: qemu unexpectedly closed the monitor: 2018-02-27T12:54:55.160391Z qemu-system-ppc64: Not a migration stream
2018-02-27T12:54:55.160488Z qemu-system-ppc64: load of migration failed: Invalid argument

Does this error appropriate/expected ? Earlier Libvirt was handling the error for apparmor permission denial, but in bionic Qemu errors, I still feel the inconsistency and it would be better to document well to make sure users/customers to understand how it works / how to use

2. with --bypass-cache it works with /var/tmp

# virsh save virt-tests-vm1 /var/tmp/save.file --bypass-cache

Domain virt-tests-vm1 saved to /var/tmp/save.file

# virsh restore /var/tmp/save.file --bypass-cache
Domain restored from /var/tmp/save.file

3. in /var/lib/libvirt/images it works fine without issues,

# virsh save virt-tests-vm1 /var/lib/libvirt/images/save.file

Domain virt-tests-vm1 saved to /var/lib/libvirt/images/save.file

# virsh restore /var/lib/libvirt/images/save.file
Domain restored from /var/lib/libvirt/images/save.file

System Environment:

Libvirt
# dpkg -l | grep libvirt
ii gir1.2-libvirt-glib-1.0:ppc64el 1.0.0-1 ppc64el GObject introspection files for the libvirt-glib library
ii gir1.2-libvirt-sandbox-1.0 0.5.1+git20160404-1 ppc64el GObject introspection files for the libvirt-sandbox library
ii libvirt-bin 4.0.0-1ubuntu4 ppc64el programs for the libvirt library
ii libvirt-clients 4.0.0-1ubuntu4 ppc64el Programs for the libvirt library
ii libvirt-clients-dbgsym 4.0.0-1ubuntu4 ppc64el debug symbols for libvirt-clients
ii libvirt-daemon 4.0.0-1ubuntu4 ppc64el Virtualization daemon
ii libvirt-daemon-dbgsym 4.0.0-1ubuntu4 ppc64el debug symbols for libvirt-daemon
ii libvirt-daemon-driver-storage-gluster 4.0.0-1ubuntu4 ppc64el Virtualization daemon glusterfs storage driver
ii libvirt-daemon-driver-storage-gluster-dbgsym 4.0.0-1ubuntu4 ppc64el debug symbols for libvirt-daemon-driver-storage-gluster
ii libvirt-daemon-driver-storage-rbd 4.0.0-1ubuntu4 ppc64el Virtualization daemon RBD storage driver
ii libvirt-daemon-driver-storage-rbd-dbgsym 4.0.0-1ubuntu4 ppc64el debug symbols for libvirt-daemon-driver-storage-rbd
ii libvirt-daemon-driver-storage-sheepdog 4.0.0-1ubuntu4 ppc64el Virtualization daemon Sheedog storage driver
ii libvirt-daemon-driver-storage-sheepdog-dbgsym 4.0.0-1ubuntu4 ppc64el debug symbols for libvirt-daemon-driver-storage-sheepdog
ii libvirt-daemon-driver-storage-zfs 4.0.0-1ubuntu4 ppc64el Virtualization daemon ZFS storage driver
ii libvirt-daemon-driver-storage-zfs-dbgsym 4.0.0-1ubuntu4 ppc64el debug symbols for libvirt-daemon-driver-storage-zfs
ii libvirt-daemon-system 4.0.0-1ubuntu4 ppc64el Libvirt daemon configuration files
ii libvirt-daemon-system-dbgsym 4.0.0-1ubuntu4 ppc64el debug symbols for libvirt-daemon-system
ii libvirt-dev:ppc64el 4.0.0-1ubuntu4 ppc64el development files for the libvirt library
ii libvirt-doc 4.0.0-1ubuntu4 all documentation for the libvirt library
ii libvirt-glib-1.0-0:ppc64el 1.0.0-1 ppc64el libvirt GLib and GObject mapping library
ii libvirt-glib-1.0-0-dbgsym:ppc64el 1.0.0-1 ppc64el debug symbols for package libvirt-glib-1.0-0
ii libvirt-glib-1.0-dev:ppc64el 1.0.0-1 ppc64el Development files for the libvirt-glib library
ii libvirt-ocaml 0.6.1.4-2build1 ppc64el OCaml bindings for libvirt (runtime)
ii libvirt-ocaml-dbgsym 0.6.1.4-2build1 ppc64el debug symbols for libvirt-ocaml
ii libvirt-ocaml-dev 0.6.1.4-2build1 ppc64el OCaml bindings for libvirt (development files)
ii libvirt-sandbox-1.0-5 0.5.1+git20160404-1 ppc64el Application sandbox toolkit shared library
ii libvirt-sandbox-1.0-5-dbgsym 0.5.1+git20160404-1 ppc64el Debug symbols for libvirt-sandbox-1.0-5
ii libvirt-sandbox-1.0-dev 0.5.1+git20160404-1 ppc64el Development files for libvirt-sandbox library
ii libvirt-sanlock 4.0.0-1ubuntu4 ppc64el Sanlock plugin for virtlockd
ii libvirt-sanlock-dbgsym 4.0.0-1ubuntu4 ppc64el debug symbols for libvirt-sanlock
ii libvirt-wireshark 4.0.0-1ubuntu4 ppc64el Wireshark dissector for the libvirt protocol
ii libvirt-wireshark-dbgsym 4.0.0-1ubuntu4 ppc64el debug symbols for libvirt-wireshark
ii libvirt0:ppc64el 4.0.0-1ubuntu4 ppc64el library for interfacing with different virtualization systems
ii libvirt0-dbgsym:ppc64el 4.0.0-1ubuntu4 ppc64el debug symbols for libvirt0
ii libvirtodbc0 6.1.6+repack-0ubuntu9 ppc64el high-performance database - ODBC libraries
ii libvirtodbc0-dbgsym 6.1.6+repack-0ubuntu9 ppc64el debug symbols for libvirtodbc0
ii python-libvirt 4.0.0-1 ppc64el libvirt Python bindings

Qemu

# dpkg -l | grep qemu
ii ipxe-qemu 1.0.0+git-20180124.fbe8c52d-0ubuntu2 all PXE boot firmware - ROM images for qemu
ii ipxe-qemu-256k-compat-efi-roms 1.0.0+git-20150424.a25a16d-0ubuntu2 all PXE boot firmware - Compat EFI ROM images for qemu
ii qemu-block-extra:ppc64el 1:2.11+dfsg-1ubuntu2 ppc64el extra block backend modules for qemu-system and qemu-utils
ii qemu-kvm 1:2.11+dfsg-1ubuntu2 ppc64el QEMU Full virtualization on x86 hardware
ii qemu-slof 20170724+dfsg-1ubuntu1 all Slimline Open Firmware -- QEMU PowerPC version
ii qemu-system-common 1:2.11+dfsg-1ubuntu2 ppc64el QEMU full system emulation binaries (common files)
ii qemu-system-ppc 1:2.11+dfsg-1ubuntu2 ppc64el QEMU full system emulation binaries (ppc)
ii qemu-utils 1:2.11+dfsg-1ubuntu2 ppc64el QEMU utilities

Kernel

# uname -a
Linux ltc-boston8 4.15.0-10-generic #11-Ubuntu SMP Tue Feb 13 18:21:52 UTC 2018 ppc64le ppc64le ppc64le GNU/Linux