| Summary: | The parameter "to=<port>" of vnc works bad | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 7 | Reporter: | Sibiao Luo <sluo> |
| Component: | qemu-kvm | Assignee: | Gerd Hoffmann <kraxel> |
| Status: | CLOSED CURRENTRELEASE | QA Contact: | Virtualization Bugs <virt-bugs> |
| Severity: | low | Docs Contact: | |
| Priority: | low | ||
| Version: | 7.0 | CC: | acathrow, areis, bcao, bsarathy, juzhang, kraxel, mazhang, michen, mkenneth, rhod, sluo, virt-bugs, virt-maint |
| Target Milestone: | rc | ||
| Target Release: | 7.0 | ||
| Hardware: | x86_64 | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2013-12-12 08:19:31 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
Simple off-by-one bug, qemu stops checking at 5903 instead of 5902. Simple bug, but low impact, apparently not even triggered by libvirt standard usage. Moving to 6.4. Please retest with latest qemu-kvm. Hi Sluo, Could you have a try then update the result in the bz? Best Regards, Junyi (In reply to Gerd Hoffmann from comment #8) > Please retest with latest qemu-kvm. The rhel7.0 latest qemu-kvm did not hit this issue any more. # /usr/libexec/qemu-kvm -vnc :1 & # /usr/libexec/qemu-kvm -vnc :2 & # /usr/libexec/qemu-kvm -vnc :1,to=2 -monitor stdio QEMU 1.5.3 monitor - type 'help' for more information (qemu) qemu-kvm: Failed to start VNC server on `:1,to=2': Failed to bind socket: Address already in use host info: # uname -r && rpm -q qemu-kvm-rhev && rpm -q seabios 3.10.0-60.el7.x86_64 qemu-kvm-rhev-1.5.3-21.el7.x86_64 seabios-1.7.2.2-4.el7.x86_64 Also tried the rhel6.5 host also not hit it any more. # /usr/libexec/qemu-kvm -vnc :2 & [1] 18092 # /usr/libexec/qemu-kvm -vnc :3 & [2] 18098 # /usr/libexec/qemu-kvm -vnc :2,to=3 -monitor stdio qemu-kvm: Failed to start VNC server on `:2,to=3': socket bind failed: Address already in use host info: # uname -r && rpm -q qemu-kvm-rhev 2.6.32-425.el6.x86_64 qemu-kvm-rhev-0.12.1.2-2.415.el6.x86_64 Best Regards, sluo Good. chardev hotplug backport also brought in some socket code patches, they probably fixed this one as side effect in rhel6. |
Description of problem: The command line parameter value of "to=<port>" should specify the display range and the qemu will try to find a free one, The parameter "to=<port>" of vnc works bad when all the ports were in used. Version-Release number of selected component (if applicable): Server info: 2.6.32-220.el6.x86_64 qemu-kvm-0.12.1.2-2.210.el6.x86_64 tigervnc-1.0.90-0.17.20110314svn4359.el6.x86_64 Client info: vnc-reflector-1.2.4-7.fc12.x86_64 How reproducible: 100% Steps to Reproduce: 1. specified the display range in host A. eg. ...-vnc :1,to=2 2. take all the display number in used in host A. eg. # /usr/libexec/qemu-kvm -vnc :1 # /usr/libexec/qemu-kvm -vnc :2 3. start a guest with the CLI of the step 1. 4. 'info vnc' in monitor shows the display actually used. (qemu) info vnc Server: address: 0.0.0.0:5903 auth: none Actual results: the port number 5903 can be used. Expected results: the available port should be 5901,5902. for 5903 port, can not be used. Additional info: