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Description of problem: For now,no snapshot on floppy Version-Release number of selected component (if applicable): qemu-kvm-0.12.1.2-2.193.el6.x86_64 guest kernel #uname -r 2.6.32-195.el6.x86_64 How reproducible: 100% Steps to Reproduce: 1.boot guest /usr/libexec/qemu-kvm -no-kvm-pit-reinjection -rtc-td-hack -m 1G -smp 1 -M rhel6.2.0 -drive file=/root/zhang/armbu/mainqcow2.qcow2,if=none,id=drive-virtio0-0-0,format=qcow2,werror=stop,rerror=stop,cache=none,aio=native -device virtio-blk-pci,drive=drive-virtio0-0-0,id=virti0-0-0,bootindex=1 -netdev tap,id=hostnet0,vhost=on,script=/etc/qemu-ifup -device virtio-net-pci,netdev=hostnet0,id=net0,mac=52:56:00:94:a3:21 -uuid 9e6f04cf-2ad7-45aa-9333-2d2ee26570c6 -balloon none -monitor stdio -vnc :10 -drive file=/root/zhang/armbu/qemuiso.qcow2,if=none,media=cdrom,id=drive-ide0-1-0,readonly=on,format=raw -device ide-drive,bus=ide.1,unit=0,drive=drive-ide0-1-0 -fda /root/zhang/armbu/qemufloppy.qcow2 2.(qemu) savevm 3.quit 4../bb.sh cat bb.sh for i in mainqcow2.qcow2 qemuiso.qcow2 qemufloppy.qcow2; do echo $i; qemu-img snapshot -l $i; done Actual results: mainqcow2.qcow2 Snapshot list: ID TAG VM SIZE DATE VM CLOCK 1 1 3.0M 2011-09-29 04:37:57 00:00:06.353 qemuiso.qcow2 qemufloppy.qcow2 Expected results: should be also have snapshot on floppy Additional info:
http://post-office.corp.redhat.com/archives/rhvirt-patches/2011-September/msg00677.html According to our test results. with this patch fix this issue.add this issue into tracker bug(bz742458)
Verified this issue with qemu-kvm-0.12.1.2-2.199.el6,the steps are as same as comment0. After step4 Results # ./bb.sh mainqcow2.qcow2 Snapshot list: ID TAG VM SIZE DATE VM CLOCK 1 2.8M 2011-10-20 09:35:48 00:00:04.197 qemuiso.qcow2 qemufloppy.qcow2 Snapshot list: ID TAG VM SIZE DATE VM CLOCK 1 0 2011-10-20 09:35:48 00:00:04.197
We also did virtual block and usb device functional testing,did not find block or regression bugs. https://tcms.engineering.redhat.com/run/29499/ https://tcms.engineering.redhat.com/run/29338/
Moving to ON_QA because Errata Tool did not do it
Technical note added. If any revisions are required, please edit the "Technical Notes" field accordingly. All revisions will be proofread by the Engineering Content Services team. New Contents: Cause: Snapshotting ignored drives with removable media Consequence: Reverting to a snapshot didn't revert writes to floppies Fix: Ignore drives with removable media only when read-only or empty Result: Snapshotting now treats writable floppies like any other writable drive
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. http://rhn.redhat.com/errata/RHSA-2011-1531.html