Problem solved. I used Ansible and ran 'grep Duplicate /var/log/vdsm/vdsm.log' on all 121 of my hosts. Only the log of the host currently running the hosted-engine had entries. I migrated the hosted-engine, and all other VMs to other hosts, and then put the affected host into maintenance. I then undeployed it; then patched it; and finally deployed it. Its back up and running and taking VMs, and no more 'Duplicate keys' errors. -----Original Message----- From: Matthew.Stier(a)fujitsu.com <Matthew.Stier(a)fujitsu.com&gt; Sent: Monday, April 26, 2021 7:18 PM To: Nir Soffer <nsoffer(a)redhat.com&gt; Cc: users(a)ovirt.org Subject: [ovirt-users] Re: Attempting to detach a storage domain There is no /var/log/vdsm directory on the hosted-engine. This is from the current host, hosting the engine: aaa.bbb.ccc.100 is the hosted-engine 2021-04-26 19:12:42,760-0500 INFO (jsonrpc/2) [api.host] START getCapabilities() from=::ffff:aaa.bbb.ccc.100,37812 (api:48) 2021-04-26 19:12:42,763-0500 INFO (jsonrpc/2) [api.host] FINISH getCapabilities error=internal error: Duplicate key from=::ffff:168.127.151.100,37812 (api:52) 2021-04-26 19:12:42,763-0500 ERROR (jsonrpc/2) [jsonrpc.JsonRpcServer] Internal server error (__init__:350) Traceback (most recent call last): File "/usr/lib/python2.7/site-packages/yajsonrpc/__init__.py", line 345, in _handle_request res = method(**params) File "/usr/lib/python2.7/site-packages/vdsm/rpc/Bridge.py", line 198, in _dynamicMethod result = fn(*methodArgs) File "<string>", line 2, in getCapabilities File "/usr/lib/python2.7/site-packages/vdsm/common/api.py", line 50, in method ret = func(*args, **kwargs) File "/usr/lib/python2.7/site-packages/vdsm/API.py", line 1371, in getCapabilities c = caps.get() File "/usr/lib/python2.7/site-packages/vdsm/host/caps.py", line 95, in get machinetype.compatible_cpu_models()) File "/usr/lib/python2.7/site-packages/vdsm/common/cache.py", line 43, in __call__ value = self.func(*args) File "/usr/lib/python2.7/site-packages/vdsm/machinetype.py", line 142, in compatible_cpu_models all_models = domain_cpu_models(c, arch, cpu_mode) File "/usr/lib/python2.7/site-packages/vdsm/machinetype.py", line 97, in domain_cpu_models domcaps = conn.getDomainCapabilities(None, arch, None, virt_type, 0) File "/usr/lib/python2.7/site-packages/vdsm/common/libvirtconnection.py", line 131, in wrapper ret = f(*args, **kwargs) File "/usr/lib/python2.7/site-packages/vdsm/common/function.py", line 94, in wrapper return func(inst, *args, **kwargs) File "/usr/lib64/python2.7/site-packages/libvirt.py", line 3844, in getDomainCapabilities if ret is None: raise libvirtError ('virConnectGetDomainCapabilities() failed', conn=self) libvirtError: internal error: Duplicate key 2021-04-26 19:12:42,764-0500 INFO (jsonrpc/2) [jsonrpc.JsonRpcServer] RPC call Host.getCapabilities failed (error -32603) in 0.00 seconds (__init__:312) -----Original Message----- From: Nir Soffer <nsoffer(a)redhat.com&gt; Sent: Monday, April 26, 2021 5:12 PM To: Stier, Matthew <Matthew.Stier(a)fujitsu.com&gt; Cc: Benny Zlotnik <bzlotnik(a)redhat.com>; users(a)ovirt.org Subject: Re: [ovirt-users] Re: Attempting to detach a storage domain On Tue, Apr 27, 2021 at 12:48 AM Matthew.Stier(a)fujitsu.com <Matthew.Stier(a)fujitsu.com&gt; wrote: This looks like bad response from vdsm. Can you share the vdsm log from the host xxxx.yyyy.zzz? /var/log/vdsm/vdsm.log Nir _______________________________________________ Users mailing list -- users(a)ovirt.org To unsubscribe send an email to users-leave(a)ovirt.org Privacy Statement: https://www.ovirt.org/privacy-policy.html oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/ List Archives: https://lists.ovirt.org/archives/list/users@ovirt.org/message/Z2GOGEZ2DZX...