[libvirt] [PATCH v2 0/3] ensure diskchain is not broken on guest bootup

v1->v2: Add a helper function qemuDiskChainCheckBroken to check diskchain after invoking qemuDomainDetermineDiskChain() This patchset try to check whether the diskchain is broken or not when domain boot up. If dischain is broken, report like: virsh start rhel6qcow2 error: Failed to start domain rhel6qcow2 error: invalid argument: Backing file '/var/lib/libvirt/images/thirddisk' of \ image '/var/lib/libvirt/images/thirddisk.snap3' is missing. For storage pool, it still can list volumes out even if their diskchain is broken Guannan Ren(3) qemu: refactor qemuDomainCheckDiskPresence for only disk presence check qemu: add helper functions for diskchain checking qemu: check presence of each disk and its backing file as well src/libvirt_private.syms | 1 + src/qemu/qemu_domain.c | 133 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++----------------------------- src/qemu/qemu_domain.h | 3 ++ src/qemu/qemu_process.c | 6 ---- src/util/virstoragefile.c | 47 +++++++++++++++++++++++++++++++ src/util/virstoragefile.h | 2 ++ 6 files changed, 141 insertions(+), 51 deletions(-)