Bug 618901
| Summary: | Guest hang during installation on no space | ||||||
|---|---|---|---|---|---|---|---|
| Product: | Red Hat Enterprise Linux 6 | Reporter: | Mike Cao <bcao> | ||||
| Component: | qemu-kvm | Assignee: | Kevin Wolf <kwolf> | ||||
| Status: | CLOSED DUPLICATE | QA Contact: | Virtualization Bugs <virt-bugs> | ||||
| Severity: | medium | Docs Contact: | |||||
| Priority: | medium | ||||||
| Version: | 6.0 | CC: | chellwig, lcapitulino, lihuang, llim, michen, mkenneth, ndai, tburke, virt-maint | ||||
| Target Milestone: | rc | ||||||
| Target Release: | --- | ||||||
| Hardware: | All | ||||||
| OS: | Linux | ||||||
| Whiteboard: | |||||||
| Fixed In Version: | Doc Type: | Bug Fix | |||||
| Doc Text: | Story Points: | --- | |||||
| Clone Of: | Environment: | ||||||
| Last Closed: | 2010-07-30 07:20:54 UTC | Type: | --- | ||||
| Regression: | --- | Mount Type: | --- | ||||
| Documentation: | --- | CRM: | |||||
| Verified Versions: | Category: | --- | |||||
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |||||
| Cloudforms Team: | --- | Target Upstream Version: | |||||
| Embargoed: | |||||||
| Attachments: |
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Created attachment 434891 [details]
Back Trace
What's lvdisplay shows? How many times you extend the image? Be sure to do it till it about 2G-5G. OTH, Kevin, maybe we should dump the offset that triggers the ENOSPAC? (In reply to comment #2) > What's lvdisplay shows? # lvdisplay /dev/mike/mike_RHEL62 --- Logical volume --- LV Name /dev/mike/mike_RHEL62 VG Name mike LV UUID ohk2kk-Hu3Q-xi9v-Y832-fFUh-9wrZ-EzxoiU LV Write Access read/write LV Status available # open 1 LV Size 2.05 GiB Current LE 525 Segments 1 Allocation inherit Read ahead sectors auto - currently set to 256 Block device 253:13 >How many times you extend the image? 2--4 times I can repoduce this 100% in qemu-kvm-0.12.1.2-2.99.el6 .But can not reproduce it in qemu-kvm-0.12.1.2-104.el6 The only block related changes between 99 and 104 I can see are: - kvm-block-default-to-0-minimal-optimal-I-O-size.patch [bz#617271] - kvm-avoid-canceling-ide-dma-rediff.patch [bz#617414] I don't see an obvious connection between any of them and this report. Christoph, any idea? Mike is going to re-test with virtio-blk, and also versions 101 and 102 in which these patches were introduced. retest with ide disk. Actual Results: in qemu-kvm-0.12.1.2-2.100.el6 can reproduce this issue. in qemu-kvm-0.12.1.2-2.101.el6 can NOT reproduce this issue. test with virtio-blk disk. Actual Results: test in qemu-kvm-0.12.1.2-2.99,qemu-kvm-0.12.1.2-2.101,qemu-kvm-0.12.1.2-2.104. NEVER hit this issue. Reproduced this issue with ide disk in in qemu-kvm-0.12.1.2-2.100.el6 check the image by using #qemu-img check /dev/mike/mike_RHEL6 Results: Leaked cluster 33599 refcount=1 reference=0 ... Leaked cluster 33614 refcount=1 reference=0 16 leaked clusters were found on the image. This means waste of disk space, but no harm to data. So it's the IDE reset one. virtio-blk isn't affected and it's fixed in 101. The symptom makes some sense, too. Closing as a duplicate. *** This bug has been marked as a duplicate of bug 617414 *** |
Description of problem: Guest hang during installation on the no_space image. Version-Release number of selected component (if applicable): # uname -r 2.6.32-52.el6.x86_64 # rpm -q qemu-kvm qemu-kvm-0.12.1.2-2.99.el6.x86_64 How reproducible: 100% Steps to Reproduce: 1. Create a large enough qcow2 file on lvm . e.g : lvcreate -L 1G -n RHEL6 mike qemu-img create -f qcow2 /dev/mike/RHEL6 80G 2. Install kvm guest with werror=stop,werror=stop,cache=none CLI:/usr/libexec/qemu-kvm -M rhel6.0.0 -cpu qemu64,+sse2,+x2apic -enable-kvm -m 8G -smp 8,sockets=8,cores=1,threads=1 -name RHEL6_64 -uuid `uuidgen` -nodefconfig -monitor stdio -rtc base=utc -boot dc -cdrom /mnt/RHEL620100722.iso -drive file=/dev/mike/RHEL6,if=none,id=drive-ide0-0-0,boot=on,format=qcow2,cache=none -device ide-drive,bus=ide.0,unit=0,drive=drive-ide0-0-0,id=ide0-0-0 -netdev tap,id=hostnet0,vhost=on -device virtio-net-pci,netdev=hostnet0,id=net0,mac=52:54:20:8d:62:99,bus=pci.0,addr=0x5 -chardev pty,id=serial0 -device isa-serial,chardev=serial0 -usb -device usb-tablet,id=input0 -spice port=5931,disable-ticketing -vga std -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x3 -qmp tcp:0:4444,server,nowait 3. wait until vm pause on no space 4. extend the lvm. #lvextend -L +50M /dev/mike/RHEL6 5. in qmp monitor . issue cont. for qmp : {"execute":"cont"} 6 repeat 3~5. Actual results: After step 6 Guest hang ,qemu monitor and qmp have no response. Expected results: Guest pause whenever have no space and installation should be finished finally. Additional info: