Bug 1097227
| Summary: | VM migration in RHEV environment failed due to libvirt error "Failed to inquire lock: No such process" | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 6 | Reporter: | Chris Pelland <cpelland> |
| Component: | libvirt | Assignee: | Martin Kletzander <mkletzan> |
| Status: | CLOSED ERRATA | QA Contact: | Virtualization Bugs <virt-bugs> |
| Severity: | high | Docs Contact: | |
| Priority: | high | ||
| Version: | 6.5 | CC: | acathrow, ajia, bili, dallan, dyuan, gwatson, jdenemar, mkletzan, mzhan, pm-eus, shyu, teigland, zhwang |
| Target Milestone: | rc | Keywords: | ZStream |
| Target Release: | --- | ||
| Hardware: | x86_64 | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | libvirt-0.10.2-29.el6_5.8 | Doc Type: | Bug Fix |
| Doc Text: |
Cause: Libvirt was not checking whether QEMU domain process is registered when using sanlock.
Consequence: When VDSM was updated, set up sanlock for the host and libvirt and restarted libvirt daemon, any domain that was before the sanlock configuration and daemon restart could not have been migrated.
Fix: Libvirt is now checking whether QEMU domain process is registered on sanlock or not before working with it.
Result: Migration works in scenario described above.
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Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | 2014-05-27 16:27:18 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: | |||
| Bug Depends On: | 1088034 | ||
| Bug Blocks: | |||
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Description
Chris Pelland
2014-05-13 12:14:19 UTC
I can reproduce this bug with the libvirt-0.10.2-29.el6_5.7.x86_64 with the pure libvirt env steps 1. start a guest with default configuration, that means with sanlock disabled. 2. enable sanlock by edit qemu.conf: lock_manager = "sanlock" and edit qemu-sanlock.conf: auto_disk_leases = 0 require_lease_for_disks = 0 3. restart libvirtd. 4. do migrate for the guest: # virsh migrate rhel651 qemu+ssh://$target_ip/system --verbose error: Failed to inquire lock: No such process verify this bug with libvirt-0.10.2-29.el6_5.8 1.Retest the step4 with libvirt-0.10.2-29.el6_5.8, the guest can be migrated successfully # virsh migrate rhel651 qemu+ssh://$target_ip/system --verbose Migration: [100 %] 2.Migrate the guest back to the source, will fail to migrate, this was the expect result since we didn't configure the proper sanlock in the source # virsh migrate --live rhel651 qemu+ssh://$source_ip/system --verbose root@source_ip's password: error: Child quit during startup handshake: Input/output error 3.Configure the proper sanlock in the source, then re-migrate the guest back to the target, the guest can be migrated successfully # getsebool -a | grep sanlock sanlock_use_fusefs --> off sanlock_use_nfs --> on sanlock_use_samba --> off virt_use_sanlock --> on #cat /etc/libvirt/qemu.conf lock_manager = "sanlock" # tail -5 /etc/libvirt/qemu-sanlock.conf user = "sanlock" group = "sanlock" host_id = 1 auto_disk_leases = 1 disk_lease_dir = "/var/lib/libvirt/sanlock" #service wdmd start #service sanlock start #service libvirtd restart # virsh migrate --live rhel651 qemu+ssh://$source_ip/system --verbose root@$source_ip's password: Migration: [100 %] Base the upper steps mark this bug verified 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-2014-0560.html |