Re: [ovirt-users] 回复:Re: 回复:Re: ovirt engine HA

2018-04-10 Thread FERNANDO FREDIANI
ostedEngine) and then you can add an additional host with hosted engine > bits directly from the webadmin UI (HostedEngine side tab of Add new host > dialog, select Deploy). > > Best regards > > Martin Sivak > > On Mon, Apr 9, 2018 at 6:21 PM, FERNANDO FREDIANI < > fern

Re: [ovirt-users] 回复:Re: 回复:Re: ovirt engine HA

2018-04-09 Thread FERNANDO FREDIANI
Stage: Termination >> [ ERROR ] Hosted Engine deployment failed >> Log file is located at /var/log/ovirt-hosted-engine-s >> etup/ovirt-hosted-engine-setup-20180408214515-4vofq6.log >> >> >> >> - 原始邮件 - >> 发件人:Alex K <rightki

Re: [ovirt-users] Hardware critique

2018-04-06 Thread FERNANDO FREDIANI
It's likely possibile you will get more performance from a NFS server compared to Gluster. Specially if on your NFS server you have something like ZFS + SSD for L2ARC or ext4 + Bcache, but you get not redundancy. If you NFS server dies everything stops working, which is not the case with

Re: [ovirt-users] Hardware critique

2018-04-05 Thread FERNANDO FREDIANI
I always found replica 3 a complete overkill. Don't know people made that up that was necessary. Just looks good and costs a lot with little benefit. Normally when using magnetic disks 2 copies are fine for most scenarios, but if using SSDs for similar scenarios depending on the configuration of

Re: [ovirt-users] ovirt engine HA

2018-04-03 Thread FERNANDO FREDIANI
Is it enough to deploy the Self-Hosted engine in just one Host of the cluster or is it necessary to repeat the process in each of the nodes that must be able to run it ? Thanks Fernando 2018-04-03 2:01 GMT-03:00 Vincent Royer : > Same thing, the engine in this case is

[ovirt-users] Deploy Self-Hosted Engine in a Active Host

2018-03-28 Thread FERNANDO FREDIANI
Hello As I mentioned in another thread I am migrating a 'Bare-metal' oVirt-Engine to a Self-Hosted Engine. For that I am following this documentation: https://ovirt.org/documentation/self-hosted/chap-Migrating_from_Bare_Metal_to_an_EL-Based_Self-Hosted_Environment/ However I think called me

Re: [ovirt-users] Snapshot of the Self-Hosted Engine

2018-03-28 Thread FERNANDO FREDIANI
at function once the engine > is stopped. It’s the easiest way I can think of right now. What kind of > storage are you using ? > > > > Sven > > > > *Von:* users-boun...@ovirt.org [mailto:users-boun...@ovirt.org] *Im > Auftrag von *FERNANDO FREDIANI > *Gesendet:*

[ovirt-users] Snapshot of the Self-Hosted Engine

2018-03-27 Thread FERNANDO FREDIANI
Hello Is it possible to snapshot the Self-Hosted Engine before an Upgrade ? If so how ? Thanks Fernando ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users

Re: [ovirt-users] Juniper vSRX Cluster on oVirt/RHEV

2018-03-26 Thread FERNANDO FREDIANI
not take in to account such things as ovirt > or proxmox or any linux overlay to hypervisors like it does for vmware / > vcenter which is no fault of their own. They assume flat KVM host (or 2 if > clustered) whereas stuff like ovirt can introduce variables (eg: no MAC > spoofing) >

Re: [ovirt-users] Juniper vSRX Cluster on oVirt/RHEV

2018-03-23 Thread FERNANDO FREDIANI
Out of curiosity how much traffic can it handle running in these Virtual Machines on the top of reasonable hardware ? Fernando 2018-03-23 4:58 GMT-03:00 Joop : > On 22-3-2018 10:17, Yaniv Kaul wrote: > > > > On Wed, Mar 21, 2018 at 10:37 PM, Charles Kozler <

Re: [ovirt-users] Ovirt nodes NFS connection

2018-03-22 Thread FERNANDO FREDIANI
Hello Tal It seems you have a very big overkill on your environment. I would say that normally 2 x 10Gb interfaces can do A LOT for nodes with proper redundancy. Just creating Vlans you can separate traffic and apply, if necessary, QoS per Vlan to guarantee which one is more priority. If you

Re: [ovirt-users] Migration oVirt Engine from Dedicated Host to Self-Hosted Engine

2018-03-19 Thread FERNANDO FREDIANI
what happens next? > > As an option you can buy a couple of fanless Celeron mini PCs (1 active + > 2nd backup with 8GB RAM and 128 - 256 GB SSD) and run host engine here > under KVM, so image can be easily cloned/restored/moved if necessary. > > > > On 03/19/2018 06:41 PM, F

Re: [ovirt-users] Migration oVirt Engine from Dedicated Host to Self-Hosted Engine

2018-03-19 Thread FERNANDO FREDIANI
there. Thanks Fernando 2018-03-19 13:38 GMT-03:00 FERNANDO FREDIANI <fernando.fredi...@upx.com>: > 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

[ovirt-users] Migration oVirt Engine from Dedicated Host to Self-Hosted Engine

2018-03-19 Thread FERNANDO FREDIANI
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

Re: [ovirt-users] Very Slow Console Performance - Windows 10

2018-03-08 Thread FERNANDO FREDIANI
enough and have seen it crashing several times as well. Fernando On 07/03/2018 16:59, Gianluca Cecchi wrote: On Wed, Mar 7, 2018 at 7:43 PM, Michal Skrivanek <michal.skriva...@redhat.com <mailto:michal.skriva...@redhat.com>> wrote: On 7 Mar 2018, at 14:03, FERNA

Re: [ovirt-users] Very Slow Console Performance - Windows 10

2018-03-07 Thread FERNANDO FREDIANI
, or am I missing anything ? Fernando On 07/03/2018 15:43, Michal Skrivanek wrote: On 7 Mar 2018, at 14:03, FERNANDO FREDIANI <fernando.fredi...@upx.com <mailto:fernando.fredi...@upx.com>> wrote: Hello Gianluca Resurrecting this topic. I made the changes as per your instruc

Re: [ovirt-users] Very Slow Console Performance - Windows 10

2018-03-07 Thread FERNANDO FREDIANI
memory. Let me know. Thanks Fernando Frediani On 24/11/2017 20:45, Gianluca Cecchi wrote: On Fri, Nov 24, 2017 at 5:50 PM, FERNANDO FREDIANI <fernando.fredi...@upx.com <mailto:fernando.fredi...@upx.com>> wrote: I have made a Export of the same VM created in oVirt to a server

Re: [ovirt-users] oVirt 2018 Survey

2018-01-17 Thread FERNANDO FREDIANI
Yeah, I noticied the same thing and almost didn't select anyone of these which are already pretty old. On 17/01/2018 05:03, Barak Korren wrote: On 17 January 2018 at 01:02, ~Stack~ wrote: Greetings, FYI, your Ubuntu options are antiquated. 12.10, 13.04, 13.10 are all

[ovirt-users] Persistence on oVirt-Nodes

2018-01-11 Thread FERNANDO FREDIANI
Quick questions about Nodes (in order to not hijack the other thread). As they don't have much notion of persistence how can I: - To have a simple configuration backup in order for, if the Operating System disk fails I reinstall the Node, restore the config and everything comes back up fine ?

Re: [ovirt-users] Storage Hardware for Hyperconverged oVirt: Gluster best practice

2018-01-10 Thread FERNANDO FREDIANI
I really don't see much need of using hardware raid if you have a SSD-only environment. You will get little benefit from hardware cache memory and to guarantee the writes you may having the filesystem doing always sync operations, similar to what ZFS does. You just need to use a HBA to

Re: [ovirt-users] Live migration without Shared Storage

2017-12-28 Thread FERNANDO FREDIANI
: On 28 Dec 2017, at 19:56, FERNANDO FREDIANI <fernando.fredi...@upx.com <mailto:fernando.fredi...@upx.com>> wrote: Has anyone tried the command below under the hood between two oVirt Node (in the same Datacenter or between two different (local) ones) ? Does it work ?

[ovirt-users] Live migration without Shared Storage

2017-12-28 Thread FERNANDO FREDIANI
Has anyone tried the command below under the hood between two oVirt Node (in the same Datacenter or between two different (local) ones) ? Does it work ? virsh migrate --live --persistent --undefinesource --copy-storage-all \     --verbose --desturi This is such a fantastic features for

Re: [ovirt-users] Update to 4.2.0 failing in db check

2017-12-21 Thread FERNANDO FREDIANI
Should not this type of content not come from the dev team before the product is in GA ? On 21/12/2017 15:53, Yaniv Kaul wrote: On Dec 21, 2017 6:17 PM, "FERNANDO FREDIANI" <fernando.fredi...@upx.com <mailto:fernando.fredi...@upx.com>> wrote: Sure Sandro, b

Re: [ovirt-users] Update to 4.2.0 failing in db check

2017-12-21 Thread FERNANDO FREDIANI
Sure Sandro, but I was talking about documentation which lacks for certain procedures that are very common. Regards Fernando On 21/12/2017 12:32, Sandro Bonazzola wrote: 2017-12-21 12:55 GMT+01:00 FERNANDO FREDIANI <fernando.fredi...@upx.com <mailto:fernando.fredi...@u

Re: [ovirt-users] Live migration without shared storage

2017-12-21 Thread FERNANDO FREDIANI
That is going certainly to be a very welcome feature and if not yet should be on the top of th roadmap. For planned maintenances it solves mostly all downtime problems. Fernando On 21/12/2017 12:19, Pujan Shah wrote: We have a bit odd setup where some of our clients have dedicated hosts and

Re: [ovirt-users] [ovirt-announce] [Call for feedback] share also your successful upgrades experience

2017-12-21 Thread FERNANDO FREDIANI
Seems an upgrade guide is more than needed for a 4.1 to 4.2 upgrade. Perhaps with all the feedback comming that can be done. On 21/12/2017 11:55, Misak Khachatryan wrote: Did upgrade to 4.2 yesterday. Everything wen smoothly except few glitches. I have 4 host install - 3 gluster and one

Re: [ovirt-users] Update to 4.2.0 failing in db check

2017-12-21 Thread FERNANDO FREDIANI
Updates are often problematic. Whenever someone manages to do a 4.1 to 4.2 upgrade could possibility post it to the Wiki. That will help a lot of people. Fernando On 21/12/2017 08:24, Sandro Bonazzola wrote: 2017-12-21 11:03 GMT+01:00 Giorgio Biacchi

Re: [ovirt-users] bonding mode-alb

2017-12-11 Thread FERNANDO FREDIANI
Hello If you have 10Gb ports you hardly need to use these aggregation in order to have more bandwidth. 10Gb is enough for A LOT of things. Just use bonding mode=1 (active/backup) if your switches don't support stacking. Doing mode-tlb and alb is not always straight forward as mode 1 or mode

Re: [ovirt-users] Best practice for iSCSI storage domains

2017-12-07 Thread FERNANDO FREDIANI
That's one of the reasons I prefer File storage (like NFS) than iSCSI or Fiberchannel. A lot more flexible and manageable. In the past for VMFS5 I used to work with 4TB LUNs. Now a days something between 4TB and 8TB may be ok given the bigger size of VMs, depending on your enviroment of

Re: [ovirt-users] [ANN] oVirt 4.1.8 Fourth Release Candidate is now available

2017-12-01 Thread FERNANDO FREDIANI
only in the 4.2. Thanks in advance, On Fri, Dec 1, 2017 at 1:58 PM, FERNANDO FREDIANI <fernando.fredi...@upx.com <mailto:fernando.fredi...@upx.com>> wrote: Thanks Simone. Let me ask about a two bugfixes I am eagerly waiting for 4.1.x and they are already on the 4.2.0 rel

Re: [ovirt-users] [ANN] oVirt 4.1.8 Fourth Release Candidate is now available

2017-12-01 Thread FERNANDO FREDIANI
Thanks Simone. Let me ask about a two bugfixes I am eagerly waiting for 4.1.x and they are already on the 4.2.0 release notes. BZ 1448831 - Issues with automating the configuration of VMs (cloud-init) - https://bugzilla.redhat.com/show_bug.cgi?id=1448831 BZ 1464043 - Cloud-init network

[ovirt-users] Hosts been evacuated unnecessarily

2017-11-28 Thread FERNANDO FREDIANI
Hello folks. Ou oVirt (4.1.7.3-1.el7.centos) which runs in one Datacenter and controls Nodes locally and also remotelly lost communication with the remote Nodes in another Datacenter. To this point nothing wrong as the Nodes can continue working as expected and running their Virtual Machines

Re: [ovirt-users] OVS DPDK Performance

2017-11-28 Thread FERNANDO FREDIANI
gains. Do you think that is feasible ? Fernando On 28/11/2017 06:12, Irit Goihman wrote: Hi Fernando, On Mon, Nov 27, 2017 at 9:25 PM, FERNANDO FREDIANI <fernando.fredi...@upx.com <mailto:fernando.fredi...@upx.com>> wrote: Hello As some may have seen recently OVS D

[ovirt-users] OVS DPDK Performance

2017-11-27 Thread FERNANDO FREDIANI
Hello As some may have seen recently OVS DPDK has been introduced to oVirt (https://ovirt.org/blog/2017/09/ovs-dpdk/). This is very interesting feature which can make a huge performance difference in terms of network performance. Just wanted to ask if anyone has tested it in any environment

Re: [ovirt-users] Very Slow Console Performance - Windows 10

2017-11-24 Thread FERNANDO FREDIANI
confident once vram is increased that should resolve the issue with not only Windows 10 VMs, but other as well. Anyone can give a hint about the correct procedure to apply this change ? Thanks in advance. Fernando On 23/11/2017 10:46, FERNANDO FREDIANI wrote: Hello Has anyone installed

Re: [ovirt-users] Shared vs Local Storage for Datacenters

2017-11-23 Thread FERNANDO FREDIANI
I hope the same as well. Actually I hope this concept could be retired and be able to add any type of storage in any type of DC either it has 1 host or multiple. Regards Fernando On 23/11/2017 17:22, Matt . wrote: Hi Guys, I'm wondering at the moment what the actual difference is between

[ovirt-users] Very Slow Console Performance - Windows 10

2017-11-23 Thread FERNANDO FREDIANI
Hello Has anyone installed a Windows 10 Virtual Machine ? I am having serious Console Performance issues even after installing the Ted Hat QXL controller from the virtio-win ISO. Someone informed in a forum having similar issues and have resolved by increasing the graphics card memory to

Re: [ovirt-users] recommendations for best performance and reliability

2017-11-13 Thread FERNANDO FREDIANI
(over LVM?), as I don't have dedicated hardware RAID cards, would mdraid add any benefit? On Mon, Nov 13, 2017 at 1:47 PM, FERNANDO FREDIANI <fernando.fredi...@upx.com <mailto:fernando.fredi...@upx.com>> wrote: Helli Rudi Nice specs. I wouldn't use GlusterFS fo

Re: [ovirt-users] recommendations for best performance and reliability

2017-11-13 Thread FERNANDO FREDIANI
Helli Rudi Nice specs. I wouldn't use GlusterFS for this setup with the third server in a different location. Just have this server as an Standalone and replicate the VMs there. You won't have real time replication, but much less hassle and probably to have constant failures, specially

Re: [ovirt-users] Fixed ovirt-node-ng packages

2017-11-09 Thread FERNANDO FREDIANI
So it doesn't look related, but regardless if the issue returns can you please open a bug with all the details? Thanks in advance, On Thu, Nov 9, 2017 at 6:14 PM, FERNANDO FREDIANI <fernando.fredi...@upx.com <mailto:fernando.fredi...@upx.com>> wrote: Thanks Lev. Could you pl

Re: [ovirt-users] Fixed ovirt-node-ng packages

2017-11-09 Thread FERNANDO FREDIANI
Thanks Lev. Could you please mention in a short sentence what this critical issue is related to ? Coincidently or not today I had a major issue in our node related to network which only resolved after I live migrated all VMs out from a node and rebooted it. It seems this network issue was

Re: [ovirt-users] [ANN] oVirt 4.2.0 First Beta Release is now available for testing

2017-11-07 Thread FERNANDO FREDIANI
Fantastic Greg and thanks for the feedback about this as well. Keep up the good work. Fernando On 07/11/2017 16:45, Greg Sheremeta wrote: On Wed, Nov 1, 2017 at 3:19 PM, Yaniv Kaul <yk...@redhat.com <mailto:yk...@redhat.com>> wrote: On Wed, Nov 1, 2017 at 7:36 PM, FERNA

Re: [ovirt-users] Messed up upgrade to 4.2. Solution badly needed.

2017-11-03 Thread FERNANDO FREDIANI
early adopters. Regards Fernando Frediani On 03/11/2017 10:21, Marcin Jessa wrote: Hi guys. I have VM with hosted engine and a two node setup. When beta came out I was “OH! New shiny tech! Let’s try it!”. You all know the feeling. Unfortunately the upgrade process did not go as expected. I

Re: [ovirt-users] [ANN] oVirt 4.2.0 First Beta Release is now available for testing

2017-11-03 Thread FERNANDO FREDIANI
nterface, but I’m never going to use it for primary work. Please prioritize ease of use on Desktop over Mobile! ---- *From:* FERNANDO FREDIANI <fernando.fredi...@upx.com <mailto:fernando.fredi...@up

Re: [ovirt-users] [ANN] oVirt 4.2.0 First Beta Release is now available for testing

2017-11-01 Thread FERNANDO FREDIANI
Agreed. Otherwise it would apply 'one size fits all' as mentioned and that is not the case. Applying guidelines is something very good to do, by removing stuff that may only be 'recent trend' or 'buzz stuff' considering the audience that will use it is even better practice. I don't think

Re: [ovirt-users] [ANN] oVirt 4.2.0 First Beta Release is now available for testing

2017-10-31 Thread FERNANDO FREDIANI
on Desktop over Mobile! ---- *From:* FERNANDO FREDIANI <fernando.fredi...@upx.com <mailto:fernando.fredi...@upx.com>> *Subject:* Re: [ovirt-users] [ANN] oVirt 4.2.0 First Beta Release is now available

Re: [ovirt-users] [ANN] oVirt 4.2.0 First Beta Release is now available for testing

2017-10-31 Thread FERNANDO FREDIANI
On 31/10/2017 13:43, Alexander Wels wrote: Will the right click dialog be available in the final release? Because, currently in 4.2 we need to go at the up right corner to interact with object (migrate, maintenance...) Short answer: No, we removed it on purpose. Long answer: No, here are

Re: [ovirt-users] How to start oVirt in GUI

2017-10-31 Thread FERNANDO FREDIANI
Just a note about this topic. I miss a TUI. I knew it existed before and it's something pretty handy when adding new hosts and some trobleshooting. Fernando On 31/10/2017 13:12, Nathanaël Blanchet wrote: Le 31/10/2017 à 15:52, Stephen Liu a écrit : Ryan, Thanks for your advice. My

Re: [ovirt-users] [ANN] oVirt 4.2.0 First Beta Release is now available for testing

2017-10-31 Thread FERNANDO FREDIANI
Great. Much better Admin Portal than the usual one. Congratulations. Hope it  keeps getting improvements as itś very much welcome and needed. Fernando On 31/10/2017 10:13, Sandro Bonazzola wrote: The oVirt Project is pleased to announce the availability of the First Beta Release of oVirt

Re: [ovirt-users] New post on oVirt blog: Introducing High Performance Virtual Machines

2017-10-31 Thread FERNANDO FREDIANI
On 31/10/2017 11:11, Yaniv Kaul wrote: DPDK for sure is a fantastic feature for networking environments. A bit over-rated, for most workloads, if you ask me... Currently requires a bit too much configuration (in my opinion), but certainly there are workloads who critically need it.

Re: [ovirt-users] New post on oVirt blog: Introducing High Performance Virtual Machines

2017-10-31 Thread FERNANDO FREDIANI
Hi. Does the virtualization layer causes any significant impact in the VM performance, even a high CPU VM that justify the use of this feature ? DPDK for sure is a fantastic feature for networking environments. Fernando On 31/10/2017 05:56, Yaniv Kaul wrote: On Mon, Oct 30, 2017 at 9:33

Re: [ovirt-users] How is everyone performing backups?

2017-10-27 Thread FERNANDO FREDIANI
Thanks for that. Does anyone know any way to backup VMs in OVF format like or even output to a .zip .gz, etc ? Any way a server which is not necessarily in the same LAN (a offsite backup storage) receive these VMs compressed in a single file ? In other words any way to perform these backups

Re: [ovirt-users] Storage Performance

2017-10-26 Thread FERNANDO FREDIANI
That was my impression too, but unfortunately someone told in this mail list recently that Gluster isn't that clever to work without RAID Controllers and when disks fail it imposes some difficulties for replacement. Perhaps someone with more knowledge could clarify this point which certainly

[ovirt-users] Node Upgrade failing

2017-10-24 Thread FERNANDO FREDIANI
How upgrades as done and testes for oVirt Node NG ? Every time I have tried to use it on the Engine interface it failed somehow. The last image I have installed was ovirt-node-ng-installer-ovirt-4.1-2017091913 and I after installing I basically do two things before adding it to the Engine: 1)

[ovirt-users] Install oVirt in CentOS 7 Node

2017-10-18 Thread FERNANDO FREDIANI
Hi. I have a host which I installed a Minimal CentOS 7 and turned into a oVirt Node therefore it didn't come with Cockpit installed and configured as it does in the oVirt-Node-NG. Comparing both types of Hosts I have the following packages below in each scenario. The only package missing

Re: [ovirt-users] [ovirt-devel] Cockpit oVirt support

2017-10-18 Thread FERNANDO FREDIANI
This is pretty intresting and nice to have. I tried to find the screenshots and new features to see what the new webadmin UI looks like, but not sure if I am searching in the right place. https://github.com/oVirt/cockpit-machines-ovirt-provider or

Re: [ovirt-users] oVirt's VM backup

2017-09-21 Thread FERNANDO FREDIANI
Is it just me just finds strange the way oVirt/RHEV does backup ? At the present you have to snapshot the VM (fine by that), but them you have to clone AND export it to an Export Domain, then delete the cloned VM. That means three copies of the same VM somewhere. Wouldn't it be more logical

Re: [ovirt-users] PFSense VLAN Trunking

2017-09-18 Thread FERNANDO FREDIANI
I also wanted to know this which is pretty useful for these scenario. Great question ! Fernando Frediani On 17/09/2017 23:33, LukeFlynn wrote: Hello, I'm wondering if there is a way to trunk all VLANs to a PFSense VM similar to using the "4095" tag in ESXi. I've tried using a

Re: [ovirt-users] Manual transfer of VMs from DC to DC

2017-09-17 Thread FERNANDO FREDIANI
Alex, porting VMs in oVirt is not very flexible as some may expect or commonly look for. Perhaps in future versions there will be things like Host to Host transfer and not need to run commands to convert VMs For now you need to use Exports (mount, umount, mount aigain) and so on. 2017-09-17 18:18

Re: [ovirt-users] update to centos 7.4

2017-09-14 Thread FERNANDO FREDIANI
It has been released yesterday. I don't thing such a quick upgrade is recommended. It might work well but I wouldn't find strange if there are issues until this is fully tested with current oVirt versions. Fernando On 14/09/2017 11:01, Nathanaël Blanchet wrote: Hi all, Now centos 7.4 is

Re: [ovirt-users] hyperconverged question

2017-09-04 Thread FERNANDO FREDIANI
I had the very same impression. It doesn't look like that it works then. So for a fully redundant where you can loose a complete host you must have at least 3 nodes then ? Fernando On 01/09/2017 12:53, Jim Kusznir wrote: Huh...Ok., how do I convert the arbitrar to full replica, then? I was

Re: [ovirt-users] Inter Cluster Traffic

2017-08-22 Thread FERNANDO FREDIANI
How do you make the new cluster to use the same storage domain as the original one ? Storage Domains in oVirt are a bit confusing and less flexible and I am not sure it allows it, does it ? On 22/08/2017 12:23, Alan Griffiths wrote: Hi, I'm in the process of building a second ovirt cluster

[ovirt-users] oVirt Node with bcache

2017-08-16 Thread FERNANDO FREDIANI
Hello I just wanted to share a scenario with you and perhaps exchange more information with other people that may also have a similar scenario. For a couple of months I have been running a oVirt Node (CentOS 7.3 Minimal) with bcache (https://bcache.evilpiepirate.org/) for caching a SSD with

Re: [ovirt-users] Communication Problems between Engine and Hosts

2017-08-16 Thread FERNANDO FREDIANI
On Wed, Aug 2, 2017 at 5:11 PM, FERNANDO FREDIANI <fernando.fredi...@upx.com> wrote: Hello. Yesterday I had a pretty strange problem in one of our architectures. My oVirt which runs in one Datacenter and controls Nodes locally and also remotelly lost communication with the remote Nodes in a

Re: [ovirt-users] Issues getting agent working on Ubuntu 17.04

2017-08-08 Thread FERNANDO FREDIANI
Wesley, it doesn't work at all. Seems to do something with Python, not sure. Has been reported here before and the person who maintains it has been involved but didn't reply. Fernando On 08/08/2017 16:59, Wesley Stewart wrote: I am having trouble getting the ovirt agent working on Ubuntu

Re: [ovirt-users] Good practices

2017-08-08 Thread FERNANDO FREDIANI
n make any number of copies you want, it does not make sense using a RAIDed brick, what it makes sense is to use JBOD. Moacir *From:* fernando.fredi...@upx.com.br <fernando.fredi...@upx.com.br> on behalf of F

Re: [ovirt-users] Good practices

2017-08-08 Thread FERNANDO FREDIANI
your hardware controller can do write-back. Also I agree the 40Gb NICs may not be used fully and 10Gb can do the job well, but if they were available at the begining, why not use them. Fernando On 08/08/2017 03:16, Fabrice Bacchella wrote: Le 8 août 2017 à 04:08, FERNANDO FREDIANI

Re: [ovirt-users] Good practices

2017-08-07 Thread FERNANDO FREDIANI
Moacir, I understand that if you do this type of configuration you will be severely impacted on storage performance, specially for writes. Even if you have a Hardware RAID Controller with Writeback cache you will have a significant performance penalty and may not fully use all the resources you

Re: [ovirt-users] Problemas with ovirtmgmt network used to connect VMs

2017-08-07 Thread FERNANDO FREDIANI
the Hypervisor back to default kernel (3.10) the problem didn't happen anymore. If anyone ever faces this or anything similar please let me know as I am always interested to find out the root of this issue. Regards Fernando On 28/07/2017 15:01, FERNANDO FREDIANI wrote: Hello Edwardh and all. I

Re: [ovirt-users] Good practices

2017-08-07 Thread FERNANDO FREDIANI
to the operations of gluster not installation or deployment, i.e. not the conceptual understanding of gluster (conceptually it's a JBOD system). On 08/07/2017 05:41 PM, FERNANDO FREDIANI wrote: Thanks for the clarification Erekle. However I get surprised with this way of operating from GlusterFS

Re: [ovirt-users] Good practices

2017-08-07 Thread FERNANDO FREDIANI
2017 à 17:41, FERNANDO FREDIANI <fernando.fredi...@upx.com <mailto:fernando.fredi...@upx.com>> a écrit : Yet another downside of having a RAID (specially RAID 5 or 6) is that it reduces considerably the write speeds as each group of disks will end up having the write speed of a

Re: [ovirt-users] Good practices

2017-08-07 Thread FERNANDO FREDIANI
it and rebuild the RAID without going offline, i.e switching off the volume doing brick manipulations and switching it back on. Cheers Erekle On 08/07/2017 03:04 PM, FERNANDO FREDIANI wrote: For any RAID 5 or 6 configuration I normally follow a simple gold rule which gave good results so far: - up

Re: [ovirt-users] Good practices

2017-08-07 Thread FERNANDO FREDIANI
Moacir, I beleive for using the 3 servers directly connected to each others without switch you have to have a Bridge on each server for every 2 physical interfaces to allow the traffic passthrough in layer2 (Is it possible to create this from the oVirt Engine Web Interface?). If your ovirtmgmt

Re: [ovirt-users] Good practices

2017-08-07 Thread FERNANDO FREDIANI
For any RAID 5 or 6 configuration I normally follow a simple gold rule which gave good results so far: - up to 4 disks RAID 5 - 5 or more disks RAID 6 However I didn't really understand well the recommendation to use any RAID with GlusterFS. I always thought that GlusteFS likes to work in

[ovirt-users] Communication Problems between Engine and Hosts

2017-08-02 Thread FERNANDO FREDIANI
Hello. Yesterday I had a pretty strange problem in one of our architectures. My oVirt which runs in one Datacenter and controls Nodes locally and also remotelly lost communication with the remote Nodes in another Datacenter. To this point nothing wrong as the Nodes can continue working as

Re: [ovirt-users] Problemas with ovirtmgmt network used to connect VMs

2017-07-28 Thread FERNANDO FREDIANI
address. I have also even rebuilt the VM completely changing its operating system from Ubuntu 16.04 to CentOS 7.3 and the same problem happened. Fernando On 24/07/2017 18:20, FERNANDO FREDIANI wrote: Hello Edward, this happened again today and I was able to check more details. So: - The VM

Re: [ovirt-users] oVirt VM backups

2017-07-27 Thread FERNANDO FREDIANI
One thing that I cannot conceive when doing oVirt backups is the need to clone the VM in order to copy it. Why, as in VMware, isn't possible to just Snapshot and copy the read-only disk ? Fernando On 27/07/2017 07:14, Abi Askushi wrote: Hi All, For VM backups I am using some python script

Re: [ovirt-users] Ovirt Node

2017-07-25 Thread FERNANDO FREDIANI
Josep, these Hosts was CentOS Minimal Install or were oVirt-Node-NG images ? If they were CentOS Minimal install you must install vsdm before adding the host to oVirt Engine. Fernando On 25/07/2017 14:13, Jose Vicente Rosello Vila wrote: Hello users, I installed ovirt engine

Re: [ovirt-users] Problemas with ovirtmgmt network used to connect VMs

2017-07-24 Thread FERNANDO FREDIANI
way ? Thanks Fernando On 24/07/2017 09:47, FERNANDO FREDIANI wrote: Not tried this yet Edwardh, but will do at next time it happens. THe source mac address should be the mac as the VM. I don't see any reason for it to change from within the VM ou outside. What type of things would make

Re: [ovirt-users] Problemas with ovirtmgmt network used to connect VMs

2017-07-24 Thread FERNANDO FREDIANI
/2017 07:51, Edward Haas wrote: Have you tried to use tcpdump at the VM vNIC to examine if there is traffic trying to get out from there? And with what source mac address? Thanks, Edy, On Fri, Jul 21, 2017 at 5:36 PM, FERNANDO FREDIANI <fernando.fredi...@upx.com <mailto:fernando.fredi...@u

[ovirt-users] Problemas with ovirtmgmt network used to connect VMs

2017-07-21 Thread FERNANDO FREDIANI
Has anyone had problem when using the ovirtmgmt bridge to connect VMs ? I am still facing a bizarre problem where some VMs connected to this bridge stop passing traffic. Checking the problem further I see its mac address stops being learned by the bridge and the problem is resolved only with

Re: [ovirt-users] ovirt on sdcard?

2017-07-20 Thread FERNANDO FREDIANI
The proposed seems to be something interesting but is manual and susceptible to errors. I would much rather if this would come out of the box as it is VMware ESXi. A 'squashfs' type of image boots up and runs completely in memory. Any logging is written and rotated also in memory which keeps

[ovirt-users] Backup oVirt Node configuration

2017-07-18 Thread Fernando Frediani
Folks. I had a need to reinstall a oVirt Node a few times these days. This imposed reconfigure it all in order to add it back to oVirt Engine. What is a better way to backup a oVirt Node configuration, for when you reinstall it or if it fail completelly you just reinstall it and restore the

Re: [ovirt-users] Bizzare oVirt network problem

2017-07-12 Thread FERNANDO FREDIANI
, It looks like you have another oVirt instance in the same network segment(s). Don’t you? *From: *<users-boun...@ovirt.org> on behalf of FERNANDO FREDIANI <fernando.fredi...@upx.com> *Date: *Wednesday, 12 July 2017 at 16:21 *To: *"users@ovirt.org" <users@ovirt.org> *Sub

[ovirt-users] Bizzare oVirt network problem

2017-07-12 Thread FERNANDO FREDIANI
Hello. I am facing a pretty bizzare problem in two of my Nodes running oVirt. A given VM running a few hundred Mbps of traffic simply stops passing traffic and only recovers after a reboot. Checking the bridge with 'brctl showmacs BRIDGE' I see the VM's MAC address missing during this event.

Re: [ovirt-users] ovirt-guest-agent - Ubuntu 16.04

2017-07-04 Thread FERNANDO FREDIANI
ntu/ubuntu/ubuntu/pool/universe/o/ovirt-guest-agent/ovirt-guest-agent_1.0.13.dfsg-1.dsc On Wed, Jun 28, 2017 at 5:37 PM, FERNANDO FREDIANI <fernando.fredi...@upx.com <mailto:fernando.fredi...@upx.com>> wrote: Hello Is the maintainer of ovirt-guest-agent for Ubuntu on th

Re: [ovirt-users] download/export a VM image

2017-07-03 Thread FERNANDO FREDIANI
Have exactlly the same doubt here as well. On 03/07/2017 12:05, aduckers wrote: Running a 4.1 cluster with FC SAN storage. I’ve got a VM that I’ve customized, and would now like to pull that out of oVirt in order to share with folks outside the environment. What’s the easiest way to do

[ovirt-users] Virtual Machine looses connectivity with no clear explanation

2017-07-03 Thread FERNANDO FREDIANI
I have a rather strange issue which is affecting one of my last deployed Hypervisors. It is a CentOS 7 (not a oVirt Node) which runs only 3 Virtual Machines. One of these VMs have a reasonable output traffic at peaks (500 - 700Mbps) and the hypervisor underneath is connected to the switch via

[ovirt-users] ovirt-guest-agent - Ubuntu 16.04

2017-06-28 Thread FERNANDO FREDIANI
Hello Is the maintainer of ovirt-guest-agent for Ubuntu on this mail list ? I have noticed that if you install ovirt-guest-agent package from Ubuntu repositories it doesn't start. Throws an error about python and never starts. Has anyone noticied the same ? OS in this case is a clean minimal

Re: [ovirt-users] oVirt storage best practise

2017-06-14 Thread FERNANDO FREDIANI
I normally assume that any performance gain from directlly attaching a LUN to a Virtual Machine then using it in the traditional way are so little to compensate the extra hassle to do that. I would avoid as much as I cacn use it, unless it is for some very special reason where you cannot do in

Re: [ovirt-users] Host name already in use in oVirt Engine

2017-06-13 Thread FERNANDO FREDIANI
up in the Database ? Fernando On 13/06/2017 10:04, FERNANDO FREDIANI wrote: Hello. I had a previous Datacenter and Cluster with a Host in it which I have removed completelly from oVirt Engine. In order to remove I did the following steps: - Removed all Virtual Machines on the top of the Host -

[ovirt-users] Host name already in use in oVirt Engine

2017-06-13 Thread FERNANDO FREDIANI
Hello. I had a previous Datacenter and Cluster with a Host in it which I have removed completelly from oVirt Engine. In order to remove I did the following steps: - Removed all Virtual Machines on the top of the Host - Put the only Local Datastore in Maintenence mode (It didn't allow to

[ovirt-users] Question about Clusters and Storage usage

2017-06-12 Thread FERNANDO FREDIANI
Hello folks. I have here a scenario where I have one Datacenter and inside it I have one Cluster which has multiple hosts with Shared storage between them. Now I am willing to add another standalone host with Local Storage only and logic tells me to add to the same Datacenter created as they

[ovirt-users] Host install common error

2017-06-08 Thread FERNANDO FREDIANI
Hello folks. One of the most (if not the more) annoying problems of oVirt is the known message "... installation failed. Command returned failure code 1 during SSH session ..." which happens quiet often in several situations. Scrubbing installation logs it seems that most stuff goes well,

Re: [ovirt-users] Performance differences between ext4 and XFS

2017-06-08 Thread FERNANDO FREDIANI
://blog.codecentric.de/en/2017/04/xfs-possible-memory-allocation-deadlock-kmem_alloc/ Markus *Von:* users-boun...@ovirt.org [users-boun...@ovirt.org]" im Auftrag von "FERNANDO FREDIANI [fernando.fredi...@upx.com] *Gesendet:* Mittwoc

[ovirt-users] Performance differences between ext4 and XFS

2017-06-07 Thread FERNANDO FREDIANI
Just wanted to find out what filesystem people are using to host Virtual Machines in qcow2 files in a filesystem in Localstorage, ext4 or XFS ? I normally like XFS for big files which is the case fo VMs, but wondered if anyone could see any performance advantage when compared with ext4.

Re: [ovirt-users] Hyperconverged Setup and Gluster healing

2017-04-25 Thread FERNANDO FREDIANI
Hello! On Mon, Apr 24, 2017 at 5:08 PM, FERNANDO FREDIANI <fernando.fredi...@upx.com <mailto:fernando.fredi...@upx.com>> wrote: Hi Denis, understood. What if in the case of adding a fourth host to the running cluster, will the copy of data be kept only twice

Re: [ovirt-users] Hyperconverged Setup and Gluster healing

2017-04-24 Thread FERNANDO FREDIANI
a replica 3 volume, meaning that you have three participants in your quorum. But only two of those participants keep the actual data. Third one, the arbiter, stores only some metadata, not the files content, so data is not replicated 3 times. On Mon, Apr 24, 2017 at 3:33 PM, FERNANDO FREDIANI

Re: [ovirt-users] Hyperconverged Setup and Gluster healing

2017-04-24 Thread FERNANDO FREDIANI
Hello. Out of curiosity, why do you and people in general use more replica 3 than replica 2 ? If I understand correctly this seems overkill and waste of storage as 2 copies of data (replica 2) seems pretty reasonable similar to RAID 1 and still in the worst case the data can be replicated

[ovirt-users] CentOS 7 and kernel 4.x

2017-04-19 Thread FERNANDO FREDIANI
Hi folks Is anyone using KVM Nodes running CentOS with upgraded Kernel like Elrepo to either 4.5 (lt) or 4.10(ml) and noticed any improvements due that ? What about oVirt-Node-NG ? I don't really like to make much changes on oVirt-Node image, but wanted to hear from whoever may have done

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