Bug 867246
| Summary: | [LXC] A running guest will be stopped after restarting libvirtd service | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 6 | Reporter: | Alex Jia <ajia> |
| Component: | libvirt | Assignee: | Daniel Berrangé <berrange> |
| Status: | CLOSED ERRATA | QA Contact: | Virtualization Bugs <virt-bugs> |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | 6.4 | CC: | acathrow, dallan, dyasny, dyuan, lsu, mzhan, rwu, xuzhang, ydu |
| Target Milestone: | rc | Keywords: | Regression |
| Target Release: | --- | ||
| Hardware: | x86_64 | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | libvirt-0.10.2-10.el6 | Doc Type: | Bug Fix |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2013-02-21 07:10:17 UTC | Type: | Bug |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
| Bug Depends On: | |||
| Bug Blocks: | 881827 | ||
I can only reproduce this some of the time. When it does occur though I see the following in /var/log/libvirt/lxc/$GUEST.log 2012-11-02 15:30:24.416+0000: 6378: error : virNetSocketReadWire:1184 : End of file while reading data: Input/output error 2012-11-02 15:30:24.423+0000: 6378: error : virNetServerAddClient:270 : Too many active clients (1), dropping connection from 127.0.0.1;0 For some reason libvirt_lxc process is not handling the EOF correctly, causing it to refuse the libvirtd connection. Libvirtd then kills off the container. Upstream fix was
commit f33e43c2353cc10065b8a5f9965d5a57cfe8991f
Author: Daniel P. Berrange <berrange>
Date: Fri Nov 16 09:11:23 2012 +0000
Use virNetServerRun instead of custom main loop
The LXC controller code currently directly invokes the
libvirt main loop code. The problem is that this misses
the cleanup of virNetServerClient connections that
virNetServerRun takes care of.
The result is that when libvirtd is stopped, the
libvirt_lxc controller process gets stuck in a I/O loop.
When libvirtd is then started again, it fails to connect
to the controller and thus kills off the entire domain.
Signed-off-by: Daniel P. Berrange <berrange>
Verify this bug with libvirt-0.10.2-10.el6.x86_64. Repeat restart libvirtd more than 50 times, the lxc guest still running. 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-2013-0276.html |
Description of problem: A running lxc guest will be stopped after restarting libvirtd service. Version-Release number of selected component (if applicable): # rpm -q libvirt libvirt-0.10.2-4.el6.x86_64 How reproducible: sometimes Steps to Reproduce: 1. virsh -c lxc:// start toy 2. virsh -c lxc:// list 3. service libvirtd restart 4. repeat step 2 Actual results: # virsh -c lxc:// start toy Domain toy started # virsh -c lxc:// list Id Name State ---------------------------------------------------- 23987 toy running # service libvirtd restart Stopping libvirtd daemon: [ OK ] Starting libvirtd daemon: [ OK ] # virsh -c lxc:// list --all Id Name State ---------------------------------------------------- - toy shut off Expected results: the guest should be running status. Additional info: # virsh -c lxc:// dumpxml toy <domain type='lxc'> <name>toy</name> <uuid>bb428983-cb9f-4702-0f8d-7d4e143d9aad</uuid> <memory unit='KiB'>500000</memory> <currentMemory unit='KiB'>500000</currentMemory> <vcpu placement='static'>4</vcpu> <os> <type arch='x86_64'>exe</type> <init>/bin/sh</init> </os> <clock offset='utc'/> <on_poweroff>destroy</on_poweroff> <on_reboot>restart</on_reboot> <on_crash>destroy</on_crash> <devices> <emulator>/usr/libexec/libvirt_lxc</emulator> <console type='pty'> <target type='lxc' port='0'/> </console> </devices> </domain>