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ovirt 4.4 installation issues
by Markus Schaufler 21 Jul '20

21 Jul '20

Hi all, in our environment, CentOS7 and RHEL7 for the most part (Ovirt 4.3 and RHV 4.3), we are able to set a proxy directly in /etc/yum.conf (or on the single repo) to momentarily bypass some network restrictions. The proxy settings looks like this: proxy=http://our-proxy.domain:8080 proxy_username=user proxy_password=password But is also works properly when it is set directly from CLI, and this is the one we use more often: export http_proxy=http://user:password@our-proxy.domain:8080 export https_proxy=https://user:password@our-proxy.domain:8080 We are having difficulties to set the same proxy on CentOS8 / Ovirt 4.4.x. There is no way the proxy settings allows us to run "yum update". Extra Packages for Enterprise Linux 8 - x86_64 0.0 B/s | 0 B 00:00 Errors during downloading metadata for repository 'ovirt-4.4-epel': - Curl error (56): Failure when receiving data from the peer for https://mirrors.fedoraproject.org/metalink?repo=epel-8&arch=x86_64&infra=st… [Received HTTP code 407 from proxy after CONNECT] Error: Failed to download metadata for repo 'ovirt-4.4-epel': Cannot prepare internal mirrorlist: Curl error (56): Failure when receiving data from the peer for https://mirrors.fedoraproject.org/metalink?repo=epel-8&arch=x86_64&infra=st… [Received HTTP code 407 from proxy after CONNECT] Can somebody maybe point us to a solution? The above command is extracted by 'yum update' after a clean installation of Ovirt 4.4.1-2020070811 (but the same issue happened on previous versions and Nightly versions too). Thank you, Markus

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Need Help in setting up oVirt, Looking for some help (From India)
by Dhanasekar Mani 21 Jul '20

21 Jul '20

Hello, We are setting up oVirt and we are having some issues in setting up. Are there any oVirt members who can assist us from India ? We are from Bangalore. Thanks & Regards, Mani *i prefer "i did this & i have done this", rather than "i will do it"*

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Ovirt Hosted Engine Setup
by Vijay Sachdeva 21 Jul '20

21 Jul '20

Hi All, I am trying to deploy hosted engine setup, the setup got stuck at below for hours: Is this is a known bug? Thanks Vijay Sachdeva

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Slow ova export performance
by francesco＠shellrent.com 20 Jul '20

20 Jul '20

Hi All, I'm facing a really slow export ov vms hosted on a single node cluster, in a local storage. The Vm disk is 600 GB and the effective usage is around 300 GB. I estimated that the following process would take up about 15 hours to end: vdsm 25338 25332 99 04:14 pts/0 07:40:09 qemu-img measure -O qcow2 /rhev/data-center/mnt/_data/6775c41c-7d67-451b-8beb-4fd086eade2e/images/a084fa36-0f93-45c2-a323-ea9ca2d16677/55b3eac5-05b2-4bae-be50-37cde7050697 A strace -p of the pid shows a slow progression to reach the effective size. lseek(11, 3056795648, SEEK_DATA) = 3056795648 lseek(11, 3056795648, SEEK_HOLE) = 13407092736 lseek(14, 128637468672, SEEK_DATA) = 128637468672 lseek(14, 128637468672, SEEK_HOLE) = 317708828672 lseek(14, 128646250496, SEEK_DATA) = 128646250496 lseek(14, 128646250496, SEEK_HOLE) = 317708828672 lseek(14, 128637730816, SEEK_DATA) = 128637730816 lseek(14, 128637730816, SEEK_HOLE) = 317708828672 lseek(14, 128646774784, SEEK_DATA) = 128646774784 lseek(14, 128646774784, SEEK_HOLE) = 317708828672 lseek(14, 128646709248, SEEK_DATA) = 128646709248 The process take a single full core, but i don't think this is the problem. The I/O is almost nothing. Any idea/suggestion? Thank you for your time Regards

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VDSM HOST ISSUE - Message timeout which can be caused by communication issues
by lu.alfonsi＠almaviva.it 20 Jul '20

20 Jul '20

Good morning, i have installed a new ovirt 4.3.10 enviroment but sometimes on the events of some hosts i read this error message: VDSM node-1-ra command Get Host Capabilities failed: Message timeout which can be caused by communication issues Due to this issue hosts are in unresponsive state and the only way to resolve this is and activate host in the cluster, is to restart the ovirt engine service. Can anyone help me? Thanks in advance Luigi

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oVirt install questions
by David White 20 Jul '20

20 Jul '20

I'm reading through all of the documentation at https://ovirt.org/documentation/, and am a bit overwhelmed with all of the different options for installing oVirt. My particular use case is that I'm looking for a way to manage VMs on multiple physical servers from 1 interface, and be able to deploy new VMs (or delete VMs) as necessary. Ideally, it would be great if I could move a VM from 1 host to a different host as well, particularly in the event that 1 host becomes degraded (bad HDD, bad processor, etc...) I'm trying to figure out what the difference is between an oVirt Node and the oVirt Engine, and how the engine differs from the Manager. I get the feeling that `Engine` = `Manager`. Same thing. I further think I understand the Engine to be essentially synonymous with a vCenter VM for ESXi hosts. Is this correct? If so, then what's the difference between the `self-hosted` vs the `stand-alone` engines? oVirt Engine requirements look to be a minimum of 4GB RAM and 2CPUs. oVirt Nodes, on the other hand, require only 2GB RAM. Is this a requirement just for the physical host, or is that how much RAM that each oVirt node process requires? In other words, if I have a physical host with 12GB of physical RAM, will I only be able to allocate 10GB of that to guest VMs? How much of that should I dedicated to the oVirt node processes? Can you install the oVirt Engine as a VM onto an existing oVirt Node? And then connect that same node to the Engine, once the Engine is installed? Reading through the documentation, it also sounds like oVirt Engine and oVirt Node require different versions of RHEL or CentOS. I read that the Engine for oVirt 4.4.0 requires RHEL (or CentOS) 8.2, whereas each Node requires 7.x (although I'll plan to just use the oVirt Node ISO). I'm also wondering about storage. I don't really like the idea of using local storage, but a single NFS server would also be a single point of failure, and Gluster would be too expensive to deploy, so at this point, I'm leaning towards using local storage. Any advice or clarity would be greatly appreciated. Thanks, David Sent with ProtonMail Secure Email.

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about ovirt fence
by 崔涛的个人邮箱 20 Jul '20

20 Jul '20

If I configure fence for ovirt hosts, is the fence system used to fence host or to fence the vm running on the host ?

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Info on transporting a gluster storage domain
by Gianluca Cecchi 19 Jul '20

19 Jul '20

Hello, I have env1 and env2, both in 4.3 and both configured as single host HCI environments. On both I have the predefined hosted_storage, data and vmstore gluster storage domains. On env1 I have hosted_storage and data on a disk, and vmstore on a whole different disk. I also have a "big2" gluster storage domain created in another disk in a second time. I want to scratch env1 but preserve and then import vmstore and big2 storage domains in env2 This "big2" is configured as a PV on the whole 4Tb disk on env1. - nvme1n1 4Tb gluster_vg_4t2 serial: BTLF72840DVK4P0DGN eui.01000000010000005cd2e45c02de4d51 dm-3 NVME,INTEL SSDPEDKX040T7 size=3.6T features='1 queue_if_no_path' hwhandler='0' wp=rw `-+- policy='service-time 0' prio=0 status=active `- 1:0:1:0 nvme1n1 259:3 active undef running [root@ovirt ~]# pvs /dev/mapper/eui.01000000010000005cd2e45c02de4d51 PV VG Fmt Attr PSize PFree /dev/mapper/eui.01000000010000005cd2e45c02de4d51 gluster_vg_4t2 lvm2 a-- <3.64t 0 [root@ovirt ~]# [root@ovirt ~]# lvs gluster_vg_4t2 LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert gluster_lv_big2 gluster_vg_4t2 Vwi-aot--- <4.35t my_pool 1.36 my_pool gluster_vg_4t2 twi-aot--- <3.61t 1.64 0.18 [root@ovirt ~]# In similar way the vmstore storage domain has: - nvme2n1 1Tb gluster_vg_nvme1n1 serial: PHLF8125037R1P0GGN eui.01000000010000005cd2e4e359284f51 dm-1 NVME,INTEL SSDPE2KX010T7 size=932G features='1 queue_if_no_path' hwhandler='0' wp=rw `-+- policy='service-time 0' prio=0 status=active `- 2:0:1:0 nvme2n1 259:2 active undef running [root@ovirt ~]# pvs /dev/mapper/eui.01000000010000005cd2e4e359284f51 PV VG Fmt Attr PSize PFree /dev/mapper/eui.01000000010000005cd2e4e359284f51 gluster_vg_nvme1n1 lvm2 a-- 931.51g 0 [root@ovirt ~]# [root@ovirt ~]# lvs gluster_vg_nvme1n1 LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert gluster_lv_vmstore gluster_vg_nvme1n1 Vwi-aot--- 930.00g gluster_thinpool_gluster_vg_nvme1n1 63.99 gluster_thinpool_gluster_vg_nvme1n1 gluster_vg_nvme1n1 twi-aot--- 921.51g 64.58 1.80 [root@ovirt ~]# I presume the correct way is: - env1 delete and detach vmstore and big2 (without formatting/zeroing) - env2 attach the two disks to the system and then? What should I do at gluster commands level to "import" the already setup gluster bricks/volumes and then at oVirt side to import the corresponding storage domain? BTW: can I import the previous storage domain named "vmstore" giving anothe r name such as vmstore2, not to create conflict with already existing "vmstore" storage domain or the name is hard coded when importing and creating possible conflict? Thanks, Gianluca

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Strange SD problem
by Arsène Gschwind 19 Jul '20

19 Jul '20

HI, I'm having a strange behavior with a SD. When trying to manage the SD I see they "Add" button for the LUN which should already be the one use for that SD. In the Logs I see the following: 2020-07-13 17:48:07,292+02 ERROR [org.ovirt.engine.core.dal.dbbroker.BatchProcedureExecutionConnectionCallback] (EE-ManagedThreadFactory-engine-Thread-95) [51091853] Can't execute batch: Batch entry 0 select * from public.insertluns(CAST ('repl_HanaLogs_osd_01' AS varchar),CAST ('DPUtaW-Q5zp-aZos-HriP-5Z0v-hiWO-w7rmwG' AS varchar),CAST ('4TCXZ7-R1l1-xkdU-u0vx-S3n4-JWcE-qksPd1' AS varchar),CAST ('SHUAWEI_XSG1_2102350RMG10HC0000200035' AS varchar),CAST (7 AS int4),CAST ('HUAWEI' AS varchar),CAST ('XSG1' AS varchar),CAST (2548 AS int4),CAST (268435456 AS int8)) as result was aborted: ERROR: duplicate key value violates unique constraint "pk_luns" Detail: Key (lun_id)=(repl_HanaLogs_osd_01) already exists. Where: SQL statement "INSERT INTO LUNs ( LUN_id, physical_volume_id, volume_group_id, serial, lun_mapping, vendor_id, product_id, device_size, discard_max_size ) VALUES ( v_LUN_id, v_physical_volume_id, v_volume_group_id, v_serial, v_lun_mapping, v_vendor_id, v_product_id, v_device_size, v_discard_max_size )" PL/pgSQL function insertluns(character varying,character varying,character varying,character varying,integer,character varying,character varying,integer,bigint) line 3 at SQL statement Call getNextException to see other errors in the batch. 2020-07-13 17:48:07,292+02 ERROR [org.ovirt.engine.core.dal.dbbroker.BatchProcedureExecutionConnectionCallback] (EE-ManagedThreadFactory-engine-Thread-95) [51091853] Can't execute batch. Next exception is: ERROR: duplicate key value violates unique constraint "pk_luns" Detail: Key (lun_id)=(repl_HanaLogs_osd_01) already exists. Where: SQL statement "INSERT INTO LUNs ( LUN_id, physical_volume_id, volume_group_id, serial, lun_mapping, vendor_id, product_id, device_size, discard_max_size ) VALUES ( v_LUN_id, v_physical_volume_id, v_volume_group_id, v_serial, v_lun_mapping, v_vendor_id, v_product_id, v_device_size, v_discard_max_size )" PL/pgSQL function insertluns(character varying,character varying,character varying,character varying,integer,character varying,character varying,integer,bigint) line 3 at SQL statement 2020-07-13 17:48:07,293+02 INFO [org.ovirt.engine.core.utils.transaction.TransactionSupport] (EE-ManagedThreadFactory-engine-Thread-95) [51091853] transaction rolled back 2020-07-13 17:48:07,293+02 ERROR [org.ovirt.engine.core.bll.storage.domain.SyncLunsInfoForBlockStorageDomainCommand] (EE-ManagedThreadFactory-engine-Thread-95) [51091853] Command 'org.ovirt.engine.core.bll.storage.domain.SyncLunsInfoForBlockStorageDomainCommand' failed: ConnectionCallback; ]; ERROR: duplicate key value violates unique constraint "pk_luns" Detail: Key (lun_id)=(repl_HanaLogs_osd_01) already exists. Where: SQL statement "INSERT INTO LUNs ( LUN_id, physical_volume_id, volume_group_id, serial, lun_mapping, vendor_id, product_id, device_size, discard_max_size ) VALUES ( v_LUN_id, v_physical_volume_id, v_volume_group_id, v_serial, v_lun_mapping, v_vendor_id, v_product_id, v_device_size, v_discard_max_size )" It looks like the engine will add a LUN to an SD and it already exist... Any Idea how to resolve that problem? Thanks a lot -- Arsène Gschwind <arsene.gschwind(a)unibas.ch<mailto:arsene.gschwind@unibas.ch>> Universitaet Basel

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ovirt 4.4.1.1 hci and problems with ansible 2.9.10 and/or missing python2
by Gianluca Cecchi 17 Jul '20

17 Jul '20

Hello, today I wanted to test a single host hci install using ovirt-node-ng-installer-4.4.1-2020071311.el8.iso On this same environment 4.4.0 gui wizard worked ok, apart a final problem with cpu flags and final engine boot up, so I wanted to verify if all is ok now, because that problem should have been fixed But I incurred in the same problems recently discussed here: https://lists.ovirt.org/archives/list/users@ovirt.org/message/3AARZD4VBNNHW… The first part failed because of TASK [gluster.infra/roles/backend_setup : Change to Install lvm tools for RHEL systems.] *** fatal: [novirt2st.storage.local]: FAILED! => {"changed": false, "msg": "The Python 2 yum module is needed for this module. If you require Python 3 support use the `dnf` Ansible module instead."} To have the first stage work (now I have to continue with the "Continue to Hosted Engine Deployment" step) I have to modify: - /etc/ansible/roles/gluster.infra/roles/backend_setup/tasks/main.yml force to use dnf as package manager. For some reason not automatically detected by the "package" ansible module from - name: Change to Install lvm tools for RHEL systems. package: name: device-mapper-persistent-data state: present when: ansible_os_family == 'RedHat' to - name: Change to Install lvm tools for RHEL systems. package: name: device-mapper-persistent-data state: present use: dnf when: ansible_os_family == 'RedHat' - /etc/ansible/roles/gluster.infra/roles/backend_setup/tasks/vdo_create.yml change from yum to package and specify to use dnf from: - name: Install VDO dependencies #maybe use package module? yum: name: "{{ packages }}" register: vdo_deps ... to: - name: Install VDO dependencies #maybe use package module? package: name: "{{ packages }}" use: dnf register: vdo_deps ... So in my opinion a bug has to be opened if not already done. The root cause being or for any reason ansible 2.9.10 that recently updated 2.9.9 or having removed python2 modules from the distribution, that before was for some reason silently used with yum, while not using the expected dnf module with package.... I'm going to test if in the next phase any further modification has to be done. Gianluca

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