other: 0.221 semantic: 0.175 files: 0.141 device: 0.099 permissions: 0.047 network: 0.045 performance: 0.043 vnc: 0.043 debug: 0.041 graphic: 0.039 PID: 0.037 socket: 0.036 boot: 0.017 KVM: 0.016 debug: 0.521 performance: 0.081 other: 0.078 files: 0.061 socket: 0.053 PID: 0.043 device: 0.031 network: 0.031 semantic: 0.024 vnc: 0.021 KVM: 0.020 graphic: 0.013 boot: 0.012 permissions: 0.010 qemu and qemu.git -> Migration + disk stress introduces qcow2 corruptions Hi guys, here I am, reporting yet another issue with qemu. This time, it's something that was first reported in January, and Juan proposed a patch for it: http://comments.gmane.org/gmane.comp.emulators.qemu/89009 [PATCH 4/5] Reopen files after migration The symptom is, when running disk stress or any intense IO operation in guest while migrating it causes a qcow2 corruption. We've seen this consistently on the daily test jobs, both for qemu and qemu-kvm. The test that triggers it is autotest stress test running on a VM with ping-pong background migration. The fix proposed by Juan is on our RHEL branch and such a problem does not happen on the RHEL branch. So, what about re-considering Juan's patch, or maybe work out a solution that is satisfactory for the upstream maintainers? The URL that you've mentioned in the description is not valid anymore ... can you still reproduce this problem with the latest version of QEMU, or can we close this ticket nowadays? [Expired for QEMU because there has been no activity for 60 days.]