@AlexanderK said: @abudef this causes some vms not to boot You mean that when you enable Nested virtualization in the VM settings under the Advanced tab, the VM then fails to boot?

@yann Ce n'est pas de la PROD. Si ma compréhension est bonne, après recherche, le stockage vers la LUN NetAPP (iSCSI) a été perdu, la mode HA étant actif (les volumes HA n'était plus accessible). [10:05 xcp-ng-poc-1 ~]# xe vm-list The server could not join the liveset because the HA daemon could not access the heartbeat disk. [10:06 xcp-ng-poc-1 ~]# xe host-emergency-ha-disable Error: This operation is dangerous and may cause data loss. This operation must be forced (use --force). [10:06 xcp-ng-poc-1 ~]# xe host-emergency-ha-disable --force [10:06 xcp-ng-poc-1 ~]# xe-toolstack-restart Executing xe-toolstack-restart done. [10:07 xcp-ng-poc-1 ~]# Côté stockage [10:09 xcp-ng-poc-1 ~]# xe pbd-list sr-uuid=16ec6b11-6110-7a27-4d94-dfcc09f34d15 uuid ( RO) : be5ac5cc-bc70-4eef-8b01-a9ed98f83e23 host-uuid ( RO): 0219cb2e-46b8-4657-bfa4-c924b59e373a sr-uuid ( RO): 16ec6b11-6110-7a27-4d94-dfcc09f34d15 device-config (MRO): SCSIid: 3600a098038323566622b5a5977776557; targetIQN: iqn.1992-08.com.netapp:sn.89de0ec3fba011f0be0bd039eae42297:vs.8; targetport: 3260; target: 172.17.10.1; multihomelist: 172.17.10.1:3260,172.17.11.1:3260,172.17.1.1:3260,172.17.0.1:3260 currently-attached ( RO): false uuid ( RO) : a2dd4324-ce32-5a5e-768f-cc0df10dc49a host-uuid ( RO): cb9a2dc3-cc1d-4467-99eb-6896503b4e11 sr-uuid ( RO): 16ec6b11-6110-7a27-4d94-dfcc09f34d15 device-config (MRO): multiSession: 172.17.1.1,3260,iqn.1992-08.com.netapp:sn.89de0ec3fba011f0be0bd039eae42297:vs.8|172.17.0.1,3260,iqn.1992-08.com.netapp:sn.89de0ec3fba011f0be0bd039eae42297:vs.8|; target: 172.17.0.1; targetIQN: *; SCSIid: 3600a098038323566622b5a5977776557; multihomelist: 172.17.1.1:3260,172.17.10.1:3260,172.17.11.1:3260,172.17.0.1:3260 currently-attached ( RO): false [10:09 xcp-ng-poc-1 ~]# xe pbd-plug uuid=be5ac5cc-bc70-4eef-8b01-a9ed98f83e23 Error code: SR_BACKEND_FAILURE_47 Error parameters: , The SR is not available [opterr=no such volume group: VG_XenStorage-16ec6b11-6110-7a27-4d94-dfcc09f34d15], [10:10 xcp-ng-poc-1 ~]# Après ca, XO-Lite s'est correctement relancé.

It looks like "yum remove nut" does the trick.

@olivierlambert done.

Amazing timing. I have been having this issue with a VM I just set up and I came here to find out if this is a known problem, only to discover that the 97 patches I have been planning to install tonight are going to fix it.