Red Hat Bugzilla – Bug 1460863
AgentAppName doesn't match latest guest agent.
Last modified: 2018-05-15 13:34:17 EDT
Description of problem: Apparently in latest guest agent versions, we deprecated rhevm-guest-agent-common in favor of ovirt-guest-agent-common. But RHV vdc_option AgentAppName doesn't contain ovirt-guest-agent-common. Freshly installed RHV 4.1 has these: engine=# select option_name,option_value from vdc_options where option_name = 'AgentAppName'; option_name | option_value --------------+------------------------------------------------------------------ AgentAppName | rhev-agent,rhevm-guest-agent,rhevm-guest-agent-common,RHEV-Agent (1 row) Now install a fresh RHEL 7.3 and follow our documentation: https://access.redhat.com/documentation/en-us/red_hat_virtualization/4.1/html/virtual_machine_management_guide/sect-installing_guest_agents_and_drivers1 Note that at step 3 it asks to install: 3. Install the ovirt-guest-agent-common package and dependencies: # yum install ovirt-guest-agent-common That's not even on the list above. And even if I try to install "downstream" it won't without forcing a lower version, because ovirt-guest-agent-common obsoletes the rhevm-guest-agent, see: # yum install rhevm-guest-agent-common [...] Package rhevm-guest-agent-common is obsoleted by ovirt-guest-agent-common, trying to install ovirt-guest-agent-common-1.0.13-5.el7ev.noarch instead Resolving Dependencies --> Running transaction check ---> Package ovirt-guest-agent-common.noarch 0:1.0.13-5.el7ev will be installed --> Processing Dependency: qemu-guest-agent for package: ovirt-guest-agent-common-1.0.13-5.el7ev.noarch --> Running transaction check ---> Package qemu-guest-agent.x86_64 10:2.5.0-3.el7 will be installed --> Finished Dependency Resolution Installing: ovirt-guest-agent-common noarch 1.0.13-5.el7ev rhel-7-server-rh-common-rpms Installing for dependencies: qemu-guest-agent x86_64 10:2.5.0-3.el7 rhel-7-server-rpms Then 'ovirt-guest-agent-common' not in [rhev-agent,rhevm-guest-agent,rhevm-guest-agent-common,RHEV-Agent] and we get this warning when trying to create a snapshot: "Could not detect Guest Agent on the VM. Note that without a Guest Agent the data on the created snapshot may be inconsistent." Version-Release number of selected component (if applicable): rhevm-4.1.2.2-0.1.el7.noarch ovirt-guest-agent-common-1.0.13-5.el7ev.noarch qemu-guest-agent-2.5.0-3.el7.x86_64 How reproducible: As above Actual results: Incorrect warning saying guest agent is missing Expected results: No warning
in RHV 4.1 the GA is renamed to ovirt-guest-agent: https://bugzilla.redhat.com/show_bug.cgi?id=1382055 the rename from ovirt-guest-agent-* to rhev(m)-guest-agent-* is done as a part of the rhevm-setup-plugins (in setup/plugins/ovirt-engine-setup/rhevm-setup-plugins/distro-rhel/config.py) Since RHV 4.1 needs to support also older guests we need to enrich the config to recognize/support both ovirt and rhv naming of the guest agent.
Wouldn't it be a better idea to test communication with the agent and then forward this information to the engine than relying on forever chasing a set of package names?
(In reply to Germano Veit Michel from comment #2) > Wouldn't it be a better idea to test communication with the agent and then > forward this information to the engine than relying on forever chasing a set > of package names? It would have been better to send the package version as part of the protocol (which would have been also more efficient than sending the applist and parsing it), but we are not planning to change the mechanism right now.
Verified on ovirt-engine-4.2.0-0.0.master.20171106114404.git605a12f.el7.centos.noarch
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. https://access.redhat.com/errata/RHEA-2018:1473