Bug 1018267
| Summary: | Libvirt crashes during migration | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 7 | Reporter: | Michal Privoznik <mprivozn> |
| Component: | libvirt | Assignee: | Michal Privoznik <mprivozn> |
| Status: | CLOSED CURRENTRELEASE | QA Contact: | Virtualization Bugs <virt-bugs> |
| Severity: | unspecified | Docs Contact: | |
| Priority: | unspecified | ||
| Version: | 7.0 | CC: | acathrow, dyuan, jtomko, mjenner, ydu, zpeng |
| Target Milestone: | rc | ||
| Target Release: | --- | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | libvirt-1.1.1-13.el7 | Doc Type: | Bug Fix |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2014-06-13 12:44:59 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: | 1015215 | ||
Moving to POST: http://post-office.corp.redhat.com/archives/rhvirt-patches/2013-October/msg00335.html I can reproduce this with build: libvirt-1.1.1-8.el7 verify with : libvirt-1.1.1-9.el7 step: 1: build a qemu-kvm pkg with patch on destination 2: Start a migration onto destination # virsh migrate rhel6 --live qemu+ssh://10.66.106.25/system --verbose --unsafe root.106.25's password: error: Unable to read from monitor: Connection reset by peer migration failed. 3: check libvirtd both on source and destination,all active,no segfault occured. verification passed. move to verified. I've just hit the problem myself again. I'm reopening this as we need a small patch. Moreover, see bug 1015215 transcription for more details. Moving to POST: http://post-office.corp.redhat.com/archives/rhvirt-patches/2013-November/msg00726.html Move back to ASSIGNED as the crash problem. Patch proposed upstream: https://www.redhat.com/archives/libvir-list/2013-November/msg00557.html Moving to POST: http://post-office.corp.redhat.com/archives/rhvirt-patches/2013-November/msg00892.html I was getting crashes even with the fix from comment 9 Fixed upstream by v1.1.4-140-g9846402 : commit 98464021167377bc7373b4d3951b1e868f8db291 Author: Ján Tomko <jtomko> CommitDate: 2013-11-22 16:22:31 +0100 Don't start a nested job in qemuMigrationPrepareAny Patch posted downstream: http://post-office.corp.redhat.com/archives/rhvirt-patches/2013-November/msg01053.html can reproduce crash issue with libvirt-1.1.1-12.el7 verify with build:libvirt-1.1.1-13.el7 step: repeat 10 times: # virsh migrate --live rhel6 qemu+ssh://10.66.100.118/system --verbose --unsafe --listen-address 01.3.4.4 root.100.118's password: error: internal error: early end of file from monitor: possible problem: qemu-kvm: -incoming tcp:01.3.4.4:49152: Failed to bind socket: Cannot assign requested address check dst. libvirtd, no crash occured. move to verified. This request was resolved in Red Hat Enterprise Linux 7.0. Contact your manager or support representative in case you have further questions about the request. |
Description of problem: During migration, if qemu on the destination dies quickly, libvirtd crashes too. That is, if qemu happens to reply on the monitor with QMP greeting, but dies immediately after, libvirtd crashes. Version-Release number of selected component (if applicable): libvirt-1.1.1-8.el7 How reproducible: 100% (with patched qemu) Steps to Reproduce: 1. Apply this patch to qemu to make it die at the correct place: diff --git a/monitor.c b/monitor.c index b096c7f..9e0777f 100644 --- a/monitor.c +++ b/monitor.c @@ -676,6 +676,7 @@ static int do_qmp_capabilities(Monitor *mon, const QDict *params, mon->mc->command_mode = 1; } + abort(); return 0; } 2. Install the qemu on destination 3. Start a migration onto destination 4. Observe libvirtd segfault Actual results: libvirtd segfaults Expected results: libvirtd doesn't segfault Additional info: