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Major Performance Issues with gluster
by Jim Kusznir 19 Mar '18

19 Mar '18

Hello: This past week, I created a new gluster store, as I was running out of disk space on my main, SSD-backed storage pool. I used 2TB Seagate FireCuda drives (hybrid SSD/spinning). Hardware is Dell R610's with integral PERC/6i cards. I placed one disk per machine, exported the disk as a single disk volume from the raid controller, formatted it XFS, mounted it, and dedicated it to a new replica 3 gluster volume. Since doing so, I've been having major performance problems. One of my windows VMs sits at 100% disk utilization nearly continously, and its painful to do anything on it. A Zabbix install on CentOS using mysql as the backing has 70%+ iowait nearly all the time, and I can't seem to get graphs loaded from the web console. Its also always spewing errors that ultimately come down to insufficient disk performance issues. All of this was working OK before the changes. There are two: Old storage was SSD backed, Replica 2 + arb, and running on the same GigE network as management and main VM network. New storage was created using the dedicated Gluster network (running on em4 on these servers, completely different subnet (174.x vs 192.x), and was created replica 3 (no arb), on the FireCuda disks (seem to be the fastest I could afford for non-SSD, as I needed a lot more storage). My attempts to watch so far have NOT shown maxed network interfaces (using bwm-ng on the command line); in fact, the gluster interface is usually below 20% utilized. I'm not sure how to meaningfully measure the performance of the disk itself; I'm not sure what else to look at. My cluster is not very usable currently, though. IOWait on my hosts appears to be below 0.5%, usually 0.0 to 0.1. Inside the VMs is a whole different story. My cluster is currently running ovirt 4.1. I'm interested in going to 4.2, but I think I need to fix this first. Thanks! --Jim

3 3

Migration oVirt Engine from Dedicated Host to Self-Hosted Engine
by FERNANDO FREDIANI 19 Mar '18

19 Mar '18

Hello folks I currently have a oVirt Engine which runs in a Dedicated Virtual Machine in another ans separate environment. It is very nice to have it like that because every time I do a oVirt Version Upgrade I take a snapshot before and if it failed (and it did failed in the past several times) I just go back in time before the snapshot and all comes back to normal. Two quick questions: - Going to a Self-Hosted Engine will snapshots or recoverable ways be possible ? - To migrate the Engine from the current environment to the self-hosted engine is it just a question to backup the Database, restore it into the self-hosted engine keeping it with the same IP address ? Are there any special points to take in consideration when doing this migration ? Thanks Fernando

2 3

CD drive not showing
by Junaid Jadoon 19 Mar '18

19 Mar '18

Hi, Cd drive is not showing in windows 7 VM. Please help me out???

2 1

Cannot start VM after live storage migration - Bad volume specification
by Bruckner, Simone 19 Mar '18

19 Mar '18

--_000_2CB4E8C8E00E594EA06D4AC427E429920FE9C36Bfabamailserverf_ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Hi all, we did a live storage migration of one of three disks of a vm that failed= because the vm became not responding when deleting the auto-snapshot: 2018-03-16 15:07:32.084+01 | 0 | Snapshot 'VMNAME_Disk2 Auto-generat= ed for Live Storage Migration' creation for VM 'VMNAME' was initiated by xx= x 2018-03-16 15:07:32.097+01 | 0 | User xxx moving disk VMNAME_Disk2 t= o domain VMHOST_LUN_211. 2018-03-16 15:08:56.304+01 | 0 | Snapshot 'VMNAME_Disk2 Auto-generat= ed for Live Storage Migration' creation for VM 'VMNAME' has been completed. 2018-03-16 16:40:48.89+01 | 0 | Snapshot 'VMNAME_Disk2 Auto-generat= ed for Live Storage Migration' deletion for VM 'VMNAME' was initiated by xx= x. 2018-03-16 16:44:44.813+01 | 1 | VM VMNAME is not responding. 2018-03-18 18:40:51.258+01 | 2 | Failed to delete snapshot 'VMNAME_D= isk2 Auto-generated for Live Storage Migration' for VM 'VMNAME'. 2018-03-18 18:40:54.506+01 | 1 | Possible failure while deleting VMN= AME_Disk2 from the source Storage Domain VMHOST_LUN_211 during the move ope= ration. The Storage Domain may be manually cleaned-up from possible leftove= r s (User:xxx). Now we cannot start the vm anymore as long as this disk is online. Error me= ssage is "VM VMNAME is down with error. Exit message: Bad volume specificat= ion {'index': 2, 'domainID': 'ecc71a64-62c1-43f4-bf1f-3bc1b22c7a8a', 'reqsi= ze': '0', 'name': 'vdc', 'truesize': '2147483648', 'format': 'cow', 'discar= d': False, 'volumeID': '4659b5e0-93c1-478d-97d0-ec1cf4052028', 'apparentsiz= e': '2147483648', 'imageID': 'c1a05108-90d7-421d-a9b4-d4cc65c48429', 'specP= arams': {}, 'iface': 'virtio', 'cache': 'none', 'propagateErrors': 'off', '= poolID': '5849b030-626e-47cb-ad90-3ce782d831b3', 'device': 'disk', 'path': = '/rhev/data-center/mnt/blockSD/ecc71a64-62c1-43f4-bf1f-3bc1b22c7a8a/images/= c1a05108-90d7-421d-a9b4-d4cc65c48429/4659b5e0-93c1-478d-97d0-ec1cf4052028',= 'serial': 'c1a05108-90d7-421d-a9b4-d4cc65c48429', 'diskType': 'block', 'ty= pe': 'block'}." vdsm.log: 2018-03-18 21:53:33,815+0100 ERROR (vm/7d05e511) [storage.TaskManager.Task]= (Task=3D'fc3bac16-64f3-4910-8bc4-6cfdd4d270da') Unexpected error (task:875= ) Traceback (most recent call last): File "/usr/lib/python2.7/site-packages/vdsm/storage/task.py", line 882, i= n _run return fn(*args, **kargs) File "<string>", line 2, in prepareImage File "/usr/lib/python2.7/site-packages/vdsm/common/api.py", line 48, in m= ethod ret =3D func(*args, **kwargs) File "/usr/lib/python2.7/site-packages/vdsm/storage/hsm.py", line 3179, i= n prepareImage raise se.prepareIllegalVolumeError(volUUID) prepareIllegalVolumeError: Cannot prepare illegal volume: ('4c6475b1-352a-4= 114-b647-505cccbe6663',) 2018-03-18 21:53:33,816+0100 INFO (vm/7d05e511) [storage.TaskManager.Task]= (Task=3D'fc3bac16-64f3-4910-8bc4-6cfdd4d270da') aborting: Task is aborted:= "Cannot prepare illegal volume: ('4c6475b1-352a-4114-b647-505cccbe6663',)"= - code 227 (task:1181) 2018-03-18 21:53:33,816+0100 ERROR (vm/7d05e511) [storage.Dispatcher] FINIS= H prepareImage error=3DCannot prepare illegal volume: ('4c6475b1-352a-4114-= b647-505cccbe6663',) (dispatcher:82) 2018-03-18 21:53:33,816+0100 ERROR (vm/7d05e511) [virt.vm] (vmId=3D'7d05e51= 1-2e97-4002-bded-285ec4e30587') The vm start process failed (vm:927) Traceback (most recent call last): File "/usr/lib/python2.7/site-packages/vdsm/virt/vm.py", line 856, in _st= artUnderlyingVm self._run() File "/usr/lib/python2.7/site-packages/vdsm/virt/vm.py", line 2661, in _ru= n self._devices =3D self._make_devices() File "/usr/lib/python2.7/site-packages/vdsm/virt/vm.py", line 2608, in _m= ake_devices self._preparePathsForDrives(disk_params) File "/usr/lib/python2.7/site-packages/vdsm/virt/vm.py", line 1001, in _p= reparePathsForDrives drive['path'] =3D self.cif.prepareVolumePath(drive, self.id) File "/usr/lib/python2.7/site-packages/vdsm/clientIF.py", line 393, in pr= epareVolumePath raise vm.VolumeError(drive) VolumeError: Bad volume specification {'index': 2, 'domainID': 'ecc71a64-62= c1-43f4-bf1f-3bc1b22c7a8a', 'reqsize': '0', 'name': 'vdc', 'truesize': '214= 7483648', 'format': 'cow', 'discard': False, 'volumeID': '4659b5e0-93c1-478= d-97d0-ec1cf4052028', 'apparentsize': '2147483648', 'imageID': 'c1a05108-90= d7-421d-a9b4-d4cc65c48429', 'specParams': {}, 'iface': 'virtio', 'cache': '= none', 'propagateErrors': 'off', 'poolID': '5849b030-626e-47cb-ad90-3ce782d= 831b3', 'device': 'disk', 'path': '/rhev/data-center/mnt/blockSD/ecc71a64-6= 2c1-43f4-bf1f-3bc1b22c7a8a/images/c1a05108-90d7-421d-a9b4-d4cc65c48429/4659= b5e0-93c1-478d-97d0-ec1cf4052028', 'serial': 'c1a05108-90d7-421d-a9b4-d4cc6= 5c48429', 'diskType': 'block', 'type': 'block'} 2018-03-18 21:53:33,817+0100 INFO (vm/7d05e511) [virt.vm] (vmId=3D'7d05e51= 1-2e97-4002-bded-285ec4e30587') Changed state to Down: Bad volume specifica= tion {'index': 2, 'domainID': 'ecc71a64-62c1-43f4-bf1f-3bc1b22c7a8a', 'reqs= ize': '0', 'name': 'vdc', 'truesize': '2147483648', 'format': 'cow', 'disca= rd': False, 'volumeID': '4659b5e0-93c1-478d-97d0-ec1cf4052028', 'apparentsi= ze': '2147483648', 'imageID': 'c1a05108-90d7-421d-a9b4-d4cc65c48429', 'spec= Params': {}, 'iface': 'virtio', 'cache': 'none', 'propagateErrors': 'off', = 'poolID': '5849b030-626e-47cb-ad90-3ce782d831b3', 'device': 'disk', 'path':= '/rhev/data-center/mnt/blockSD/ecc71a64-62c1-43f4-bf1f-3bc1b22c7a8a/images= /c1a05108-90d7-421d-a9b4-d4cc65c48429/4659b5e0-93c1-478d-97d0-ec1cf4052028'= , 'serial': 'c1a05108-90d7-421d-a9b4-d4cc65c48429', 'diskType': 'block', 't= ype': 'block'} (code=3D1) (vm:1646) Is there a way to recover this disk? Thank you, Simone --_000_2CB4E8C8E00E594EA06D4AC427E429920FE9C36Bfabamailserverf_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable <html xmlns:v=3D"urn:schemas-microsoft-com:vml" xmlns:o=3D"urn:schemas-micr= osoft-com:office:office" xmlns:w=3D"urn:schemas-microsoft-com:office:word" = xmlns:m=3D"http://schemas.microsoft.com/office/2004/12/omml" xmlns=3D"http:= //www.w3.org/TR/REC-html40"> <head> <meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3Dus-ascii"= > <meta name=3D"Generator" content=3D"Microsoft Word 15 (filtered medium)"> <style></style> </head> <body lang=3D"DE" link=3D"#0563C1" vlink=3D"#954F72"> <div class=3D"WordSection1"> Hi all,<o:p></o:p> <o:p> </o:p>   we did a live storage mi= gration of one of three disks of a vm that failed because the vm became not= responding when deleting the auto-snapshot:<o:p></o:p> <o:p> </o:p> 2018-03-16 15:07:32.084+01 |  =       0 | Snapshot 'VMNAME_Disk2 Auto-generated fo= r Live Storage Migration' creation for VM 'VMNAME' was initiated by xxx<o:p= ></o:p> 2018-03-16 15:07:32.097+01 |  =       0 | User xxx moving disk VMNAME_Disk2 to dom= ain VMHOST_LUN_211.<o:p></o:p> 2018-03-16 15:08:56.304+01 |  =       0 | Snapshot 'VMNAME_Disk2 Auto-generated fo= r Live Storage Migration' creation for VM 'VMNAME' has been completed.<o:p>= </o:p> 2018-03-16 16:40:48.89+01  | &= nbsp;      0 | Snapshot 'VMNAME_Disk2 Auto-generat= ed for Live Storage Migration' deletion for VM 'VMNAME' was initiated by xx= x.<o:p></o:p> 2018-03-16 16:44:44.813+01 |  =       1 | VM VMNAME is not responding.<o:p></o:p><= /span> 2018-03-18 18:40:51.258+01 |  =       2 | Failed to delete snapshot 'VMNAME_Disk2 = Auto-generated for Live Storage Migration' for VM 'VMNAME'.<o:p></o:p></spa= n> 2018-03-18 18:40:54.506+01 |  =       1 | Possible failure while deleting VMNAME_D= isk2 from the source Storage Domain VMHOST_LUN_211 during the move operatio= n. The Storage Domain may be manually cleaned-up from possible leftover<o:p></o:p>= s (User:xxx).<o:p></o:p> <o:p> </o:p> Now we cannot start the vm anym= ore as long as this disk is online. Error message is “VM VMNAME is down with error. Exit message: Bad volum= e specification {'index': 2, 'domainID': 'ecc71a64-62c1-43f4-bf1f-3bc1b22c7= a8a', 'reqsize': '0', 'name': 'vdc', 'truesize': '2147483648', 'format': 'cow', 'discard': False, 'volumeID': '4659b5e0-93c1-478d-97d0-ec= 1cf4052028', 'apparentsize': '2147483648', 'imageID': 'c1a05108-90d7-421d-a= 9b4-d4cc65c48429', 'specParams': {}, 'iface': 'virtio', 'cache': 'none', 'p= ropagateErrors': 'off', 'poolID': '5849b030-626e-47cb-ad90-3ce782d831b3', 'device': 'disk', 'path': '/rhev/d= ata-center/mnt/blockSD/ecc71a64-62c1-43f4-bf1f-3bc1b22c7a8a/images/c1a05108= -90d7-421d-a9b4-d4cc65c48429/4659b5e0-93c1-478d-97d0-ec1cf4052028', 'serial= ': 'c1a05108-90d7-421d-a9b4-d4cc65c48429', 'diskType': 'block', 'type': 'block'}.”<= o:p></o:p> <o:p> </o:p> vdsm.log:<o:p></o:p> 2018-03-18 21:53:33,815+0100 ERROR (vm/7= d05e511) [storage.TaskManager.Task] (Task=3D'fc3bac16-64f3-4910-8bc4-6cfdd4= d270da') Unexpected error (task:875)<o:p></o:p> Traceback (most recent call last):<o:p></o:p= >   File "/usr/lib/python2.7/site-pa= ckages/vdsm/storage/task.py", line 882, in _run<o:p></o:p>     return fn(*args, **kargs)= <o:p></o:p>   File "<string>", line= 2, in prepareImage<o:p></o:p>   File "/usr/lib/python2.7/site-pa= ckages/vdsm/common/api.py", line 48, in method<o:p></o:p>     ret =3D func(*args, **kwa= rgs)<o:p></o:p>   File "/usr/lib/python2.7/site-pa= ckages/vdsm/storage/hsm.py", line 3179, in prepareImage<o:p></o:p></sp= an>     raise se.prepareIllegalVo= lumeError(volUUID)<o:p></o:p> prepareIllegalVolumeError: Cannot prepare il= legal volume: ('4c6475b1-352a-4114-b647-505cccbe6663',)<o:p></o:p></= p> 2018-03-18 21:53:33,816+0100 INFO  = (vm/7d05e511) [storage.TaskManager.Task] (Task=3D'fc3bac16-64f3-4910-8bc4-6= cfdd4d270da') aborting: Task is aborted: "Cannot prepare illegal volume: ('4c6475b1-352a-4114-b647-505cccbe6663',)" - code 227 (task:1= 181)<o:p></o:p> 2018-03-18 21:53:33,816+0100 ERROR (vm/7= d05e511) [storage.Dispatcher] FINISH prepareImage error=3DCannot prepare il= legal volume: ('4c6475b1-352a-4114-b647-505cccbe6663',) (dispatcher:82)<o:p></o:p> 2018-03-18 21:53:33,816+0100 ERROR (vm/7= d05e511) [virt.vm] (vmId=3D'7d05e511-2e97-4002-bded-285ec4e30587') The vm s= tart process failed (vm:927)<o:p></o:p> Traceback (most recent call last):<o:p></o:p= >   File "/usr/lib/python2.7/site-pa= ckages/vdsm/virt/vm.py", line 856, in _startUnderlyingVm<o:p></o:p></s= pan>     self._run()<o:p></o:p></s= pan>  File "/usr/lib/python2.7/site-pac= kages/vdsm/virt/vm.py", line 2661, in _run<o:p></o:p>     self._devices =3D self._m= ake_devices()<o:p></o:p>   File "/usr/lib/python2.7/site-pa= ckages/vdsm/virt/vm.py", line 2608, in _make_devices<o:p></o:p>=     self._preparePathsForDriv= es(disk_params)<o:p></o:p>   File "/usr/lib/python2.7/site-pa= ckages/vdsm/virt/vm.py", line 1001, in _preparePathsForDrives<o:p></o:= p>     drive['path'] =3D self.ci= f.prepareVolumePath(drive, self.id)<o:p></o:p>   File "/usr/lib/python2.7/site-pa= ckages/vdsm/clientIF.py", line 393, in prepareVolumePath<o:p></o:p></s= pan>     raise vm.VolumeError(driv= e)<o:p></o:p> VolumeError: Bad volume specification {'inde= x': 2, 'domainID': 'ecc71a64-62c1-43f4-bf1f-3bc1b22c7a8a', 'reqsize': '0', = 'name': 'vdc', 'truesize': '2147483648', 'format': 'cow', 'discard': False, 'volumeID': '4659b5e0-93c1-478d-97d0-ec1cf4052028= ', 'apparentsize': '2147483648', 'imageID': 'c1a05108-90d7-421d-a9b4-d4cc65= c48429', 'specParams': {}, 'iface': 'virtio', 'cache': 'none', 'propagateEr= rors': 'off', 'poolID': '5849b030-626e-47cb-ad90-3ce782d831b3', 'device': 'disk', 'path': '/rhev/data-center/mnt/blockSD/ecc71a64-62c1-43f= 4-bf1f-3bc1b22c7a8a/images/c1a05108-90d7-421d-a9b4-d4cc65c48429/4659b5e0-93= c1-478d-97d0-ec1cf4052028', 'serial': 'c1a05108-90d7-421d-a9b4-d4cc65c48429= ', 'diskType': 'block', 'type': 'block'}<o:p></o:p> 2018-03-18 21:53:33,817+0100 INFO  = (vm/7d05e511) [virt.vm] (vmId=3D'7d05e511-2e97-4002-bded-285ec4e30587') Cha= nged state to Down: Bad volume specification {'index': 2, 'domainID': 'ecc71a64-62c1-43f4-bf1f-3bc1b22c7a8a', 'reqsize': '0', 'name': 'vdc', 'tr= uesize': '2147483648', 'format': 'cow', 'discard': False, 'volumeID': '4659= b5e0-93c1-478d-97d0-ec1cf4052028', 'apparentsize': '2147483648', 'imageID':= 'c1a05108-90d7-421d-a9b4-d4cc65c48429', 'specParams': {}, 'iface': 'virtio', 'cache': 'none', 'propagateErrors': '= off', 'poolID': '5849b030-626e-47cb-ad90-3ce782d831b3', 'device': 'disk', '= path': '/rhev/data-center/mnt/blockSD/ecc71a64-62c1-43f4-bf1f-3bc1b22c7a8a/= images/c1a05108-90d7-421d-a9b4-d4cc65c48429/4659b5e0-93c1-478d-97d0-ec1cf40= 52028', 'serial': 'c1a05108-90d7-421d-a9b4-d4cc65c48429', 'diskType': 'block', 'ty= pe': 'block'} (code=3D1) (vm:1646)<o:p></o:p> <o:p> </o:p> Is there a way to recover this = disk?<o:p></o:p> <o:p> </o:p> Thank you,<o:p></o:p> Simone<o:p></o:p> <o:p> </o:p> </div> </body> </html> --_000_2CB4E8C8E00E594EA06D4AC427E429920FE9C36Bfabamailserverf_--

1 1

Ovirt with ZFS+ Gluster
by Tal Bar-Or 19 Mar '18

19 Mar '18

Hello, I started to do new modest system planing and the system will be mounted on top of 3~4 Dell r720 with each 2xe5-2640 v2 and 128GB memory and 12xsas 10k 1.2tb and 3x ssd's my plan is to use zfs on top of glusterfs , and my question is since i didn't saw any doc on it Is this kind of deployment is done in the past and recommended. any way if yes is there any doc how to ? Thanks -- Tal Bar-or

3 3

VM has been paused due to NO STORAGE SPACE ERROR ?!?!?!?!
by Enrico Becchetti 19 Mar '18

19 Mar '18

Dear All, Does someone had seen that error ? When I run this command from my virtual machine: # time dd if=/dev/zero of=enrico.dd bs=4k count=10000000 VM was paused due to kind a storage error/problem. Strange message because tell about "no storage space error" but ovirt puts virtual machine in a paused state. Inside events from ovirt web interface I see this: "VM has been paused due to lack of storage space" but no ERROR found in /var/log/vdsm.log. My oVirt enviroment 4.2.1 has three hypervivosr with FC storage and before now I haven't see any other problem during the normal functioning of the vm , it's seem that this error occurs only when there is massive I/O. Any ideas ? Thanks a lot. Best Regards Enrico -- _______________________________________________________________________ Enrico Becchetti Servizio di Calcolo e Reti Istituto Nazionale di Fisica Nucleare - Sezione di Perugia Via Pascoli,c/o Dipartimento di Fisica 06123 Perugia (ITALY) Phone:+39 075 5852777 Mail: Enrico.Becchetti<at>pg.infn.it ______________________________________________________________________

5 7

Open source backup!
by Nasrum Minallah Manzoor 19 Mar '18

19 Mar '18

--_000_HK2PR0401MB21648712398E942EAA9C52C1E2DA0HK2PR0401MB2164_ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable HI, Can you please suggest me any open source backup solution for ovirt Virtual= machines. My backup media is FC tape library which is directly attached to my ovirt n= ode. I really appreciate your help Regards, --_000_HK2PR0401MB21648712398E942EAA9C52C1E2DA0HK2PR0401MB2164_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable <html xmlns:v=3D"urn:schemas-microsoft-com:vml" xmlns:o=3D"urn:schemas-micr= osoft-com:office:office" xmlns:w=3D"urn:schemas-microsoft-com:office:word" = xmlns:m=3D"http://schemas.microsoft.com/office/2004/12/omml" xmlns=3D"http:= //www.w3.org/TR/REC-html40"> <head> <meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3Dus-ascii"= > <meta name=3D"Generator" content=3D"Microsoft Word 15 (filtered medium)"> <style></style> </head> <body lang=3D"EN-GB" link=3D"#0563C1" vlink=3D"#954F72"> <div class=3D"WordSection1"> HI, Can you please suggest me any open source = backup solution for ovirt Virtual machines. My backup media is FC tape library which i= s directly attached to my ovirt node. I really appreciate your help<= br style=3D"font-variant-ligatures: normal;font-variant-caps: normal;orphan= s: 2;text-align:start;widows: 2;-webkit-text-stroke-width: 0px;text-decorat= ion-style: initial;text-decoration-color: initial;word-spacing:0px"> <o:p></o:p> <o:p> </o:p><= /span> <o:p> </o:p><= /span> <o:p> </o:p><= /span> Regards,<o:= p></o:p> </div> </body> </html> --_000_HK2PR0401MB21648712398E942EAA9C52C1E2DA0HK2PR0401MB2164_--

4 4

How to disable the QoS settings (go back to 'Unlimited' state) in the vNIC profile by using oVirt REST API?
by Shao-Da Huang 19 Mar '18

19 Mar '18

Hi, I have a vNIC profile with a QoS object: <vnic_profile> <name>vnic_test</name> <network id="00000000-0000-0000-0000-000000000009"/> <qos id="74de92de-3cea-449c-b82e-4655802698c5"/> <pass_through> <mode>disabled</mode> </pass_through> <port_mirroring>false</port_mirroring> </vnic_profile> Now I try to update this object using PUT method and set the 'pass_through' mode to 'enabled', But I always got the error message "Cannot edit VM network interface profile. 'Port Mirroring' and 'Qos' are not supported on passthrough profiles." no matter I send the request body like: <vnic_profile> <name>vnic_test</name> <network id="00000000-0000-0000-0000-000000000009"/> <pass_through> <mode>enabled</mode> </pass_through> <port_mirroring>false</port_mirroring> </vnic_profile> OR <vnic_profile> <name>vnic_test</name> <network id="00000000-0000-0000-0000-000000000009"/> <pass_through> <mode>enabled</mode> </pass_through> </vnic_profile> Could anyone tell me how to disable the related QoS settings (namely go back to 'Unlimited' state) in a vNIC profile by using REST API?

1 0

Query about running ovirt-4.2.1 engine support 3.x nodes ?
by Joseph Kelly 19 Mar '18

19 Mar '18

--_000_DM5PR1601MB1307870A4A315F7E754AD0F688D10DM5PR1601MB1307_ Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Hello All, I have two hopefully easy questions regarding an ovirt-4.2.1 engine support= and 3.x nodes ? 1) Does an ovirt-4.2.x engine support 3.x nodes ? As This page states: "The cluster compatibility is set according to the version of the least cap= able host operating system in the cluster." https://www.ovirt.org/documentation/upgrade-guide/chap-Post-Upgrade_Tasks/ Which seems to indicate that you can run say a 4.2.1 engine with lower vers= ion nodes, but is that correct ? 2) And can you just upgrade the nodes directly from 3.x to 4.2.x as per the= se steps ? 1. Move the node to maintenance 2. Add 4.2.x repos 3. yum update 4. reboot 5. Activate (exit maintenance) I've looked in the release notes but wasn't able to find much detail on ovi= rt-nodes upgrades. Thanks, Joe. -- J. Kelly Infrastructure Engineer TradingScreen www.tradingscreen.com<http://www.tradingscreen.com/> Follow TradingScreen on Twitter<http://twitter.com/#%21/TradingScreen>, Fac= ebook<http://www.facebook.com/pages/TradingScreen/214046251945650>, or our = blog, Trading Smarter<http://tradingsmarter.tradingscreen.com/> This message is intended only for the recipient(s) named above and may cont= ain confidential information. If you are not an intended recipient, you sho= uld not review, distribute or copy this message. Please notify the sender i= mmediately by e-mail if you have received this message in error and delete = it from your system. --_000_DM5PR1601MB1307870A4A315F7E754AD0F688D10DM5PR1601MB1307_ Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable <html> <head> <meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3Diso-8859-= 1"> <style type=3D"text/css" style=3D"display:none;"></style> </head> <body dir=3D"ltr"> <div id=3D"divtagdefaultwrapper" style=3D"font-size:10pt;color:#000000;font= -family:Verdana,Geneva,sans-serif;" dir=3D"ltr"> Hello All, I have two hopefully easy questio= ns regarding an ovirt-4.2.1 engine support and 3.x nodes ?&= nbsp; 1) Does an ovirt-4.2.x= engine support 3.x nodes ? As This page states: "The cluster compatibi= lity is set according to the version of the least capable host operating sy= stem in the cluster." <a href=3D"https://www.ovirt.org/= documentation/upgrade-guide/chap-Post-Upgrade_Tasks/" class=3D"OWAAutoLink"= >https://www.ovirt.org/documentation/upgrade-guide/chap-Post-Upgrade_Tasks/= </a> = Which seems to indicate that you can run say a 4.2.1 engine with lower= version nodes, but is that correct ? = = 2) And can you just upgrade the nodes directly from 3.x to 4.2.x as per the= se steps ? = = <div>1. Move the node to maintenance 2. Add 4.2.x repos 3. yum update 4. reboot 5. Activate (exit maintenance)</div> = I've looked in the release notes but wasn't able to find much detail o= n ovirt-nodes upgrades. = = Thanks, = Joe. = <div id=3D"Signature"> <div id=3D"divtagdefaultwrapper" dir=3D"ltr" style=3D"font-size:12pt; color= :rgb(0,0,0); font-family:Calibri,Arial,Helvetica,sans-serif,"EmojiFont= ","Apple Color Emoji","Segoe UI Emoji",NotoColorEm= oji,"Segoe UI Symbol","Android Emoji",EmojiSymbols,&quo= t;EmojiFont","Apple Color Emoji","Segoe UI Emoji",= NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiS= ymbols,"EmojiFont","Apple Color Emoji","Segoe UI E= moji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji&q= uot;,EmojiSymbols"> <div style=3D"font-family:Tahoma; font-size:13px"> <table class=3D"" cellspacing=3D"0" cellpadding=3D"0" width=3D"100%" style= =3D"font-family:Cantarell; letter-spacing:normal; orphans:auto; text-indent= :0px; text-transform:none; widows:auto; word-spacing:0px"> <tbody> <tr class=3D""> <td class=3D""> <div>-- J. Kelly = Infrastructure Engineer TradingScreen = <a href=3D"http://www.tradingscreen.com/" id=3D"LPNoLP">www.tradingscreen.c= om</a> </div> </td> </tr> <tr class=3D""> <td rowspan=3D"1" class=3D"">F= ollow TradingScreen on <a href=3D"http://twitter.com/#%21/TradingScreen" id=3D"LPNoLP">Twitter</a>= , <a href=3D"http://www.facebook.com/pages/TradingScreen/214046251945650" i= d=3D"LPNoLP"> Facebook</a>, or our blog, <a href=3D"http://tradingsmarter.tradingscreen.c= om/" id=3D"LPNoLP"> Trading Smarter</a> This message is intended only f= or the recipient(s) named above and may contain confidential information. I= f you are not an intended recipient, you should not review, distribute or c= opy this message. Please notify the sender immediately by e-mail if you have received this message in error an= d delete it from your system. </td> </tr> <tr class=3D""> <td rowspan=3D"1" class=3D""> </td> </tr> </tbody> </table> </div> </div> </div> </div> </body> </html> --_000_DM5PR1601MB1307870A4A315F7E754AD0F688D10DM5PR1601MB1307_--

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change CD not working
by Junaid Jadoon 19 Mar '18

19 Mar '18

hi, when i tried to change CD within a Windows VM and getting following error message. Ovirt engine and node version are 4.2. "Error while executing action Change CD: Failed to perform "Change CD" operation, CD might be still in use by the VM. Please try to manually detach the CD from withing the VM: 1. Log in to the VM 2 For Linux VMs, un-mount the CD using umount command; For Windows VMs, right click on the CD drive and click 'Eject';" Initially its working fine suddenly it giving above error. please help me out Regards, Junaid

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