[ovirt-users] Re: Hyperconverged Ovirt + ZFS

[Thomas Simmons]

Hello Donny,

I also am familiar with ZFS and am not familiar with VDO at all. I took a
quick look at VDO, but it's something to look into. It sounds like VDO is
more of a layer above RAID, whereas I'm looking for something to implement
the RAID. Apart from all of the other features provided by ZFS, I was
looking for a specific solution - I have 3 "large" spinning disks and 1
smaller ssd in each of my 3 nodes. I would like to "combine" the 3 spinning
disks (while providing some redundancy) and use the SSD as a cache device.
I can't buy more hardware right now so this need to be done in software.
The obvious choices for me would be Linux MD software RAID + LVM cache or
ZFS. I personally prefer ZFS due to it's feature-set and simplicity.

On Fri, Nov 16, 2018 at 9:22 PM Darrell Budic 
wrote:

> Well, personally I know ZFS and I don’t know VDO. Going to have to check
> it out now that I know it exists, sounds interesting to have it at the dm
> layer. I don’t use it exclusively either, but have been finding it useful
> for compression.
>
> What is your source for the statement that COW filesystems have downsides
> over time for VM workloads?
>
> On Nov 16, 2018, at 3:11 PM, Donny Davis  wrote:
>
> Why not just use the built in stuff like VDO. What benefits does ZFS bring
> for the use case?
> For most vm based workloads ZFS is the opposite of ideal over the
> lifecycle of a VM. COW filesystems have downsides over time.
>
>
>
>
> On Thu, Nov 15, 2018 at 6:09 PM Darrell Budic 
> wrote:
>
>> I did this in the past and didn’t have any trouble with gluster/ZFS, but
>> 4.2.x probably does more validation.
>>
>> I recommend these settings on your zfs volumes, I set mine at the root(v0
>> here) and let them inherit:
>>
>> required:
>> v0xattr sa local
>> v0acltype   posixacl   local
>> optional but I recommend them:
>> v0relatime  on local
>> v0compression   lz4local
>>
>> For gluster, I think it checks that it’s been “optimized for virt
>> storage”. Either apply the virt group or set the options you’ll find in
>> /var/lib/glusterd/groups/virt.
>>
>> Note that I don’t recommend the default settings for
>> cluster.shd-max-threads & cluster.shd-wait-qlength. They can swamp your
>> machines during heals unless you have a lot of cores and ram. You get a
>> slightly faster heal, but often have VMs pausing for storage or other odd
>> ball storage related errors. I prefer max-threads = 1 or maybe 2,
>> and wait-qlength=1024 or 2048. These are per volume, so they hit harder
>> than you think they will if you have a lot of volumes running.
>>
>> Also make sure the gluster volumes themselves got set to 36.36 for
>> owner.group, doesn’t matter for the bricks. Can do it with volume settings
>> or mount the volume and set it manually.
>>
>> Hope it helps!
>>
>>   -Darrell
>>
>>
>> On Nov 15, 2018, at 6:28 AM, Thomas Simmons  wrote:
>>
>> Hello All,
>>
>> I recently took a new job in a RedHat shop and I'd like to move all of my
>> homelab systems to RedHat upstream products to better align with what I
>> manage at work. I had a "custom" (aka - hacked together) 3-node
>> Hyperconverged XenServer cluster and would like to get this moved over to
>> Ovirt (I'm currently testing with 4.2.7). Unfortunately, my storage is
>> limited to software RAID with a 128GB SSD for cache. If at all possible, I
>> would prefer to use ZFS (RAIDZ+ZIL+L2ARC) instead of MD RAID + lvmcache,
>> however I'm not able to get this working and I'm not sure why. My ZFS and
>> Gluster configuration is working - at least where I can manually mount all
>> of my gluster volumes from all of my nodes, however, hosted-engine --deploy
>> fails. I understand this isn't an out of the box configuration for Ovirt,
>> however I see no reason why this shouldn't work. I would think this would
>> be no different than using any other Gluster volume for the engine
>> datastore, Am I missing something that would prevent this from working?
>>
>> [ INFO  ] TASK [Add glusterfs storage domain]
>> [ ERROR ] Error: Fault reason is "Operation Failed". Fault detail is
>> "[Storage Domain target is unsupported]". HTTP response code is 400.
>> [ ERROR ] fatal: [localhost]: FAILED! => {"changed": false,
>> "deprecations": [{"msg": "The 'ovirt_storage_domains' module is being
>> renamed 'ovirt_storage_domain'", "version": 2.8}], "msg": "Fault reason is
>> \"Operation Failed\". Fault detail is \"[Storage Domain target is
>> unsupported]\". HTTP response code is 400."}
>>
>> Even though it fails, it appears to have mounted and written
>> __DIRECT_IO_TEST__ to my Gluster volume:
>>
>> [root@vmh1 ~]# mount -t glusterfs localhost:/engine /mnt/engine/
>> [root@vmh1 ~]# ls /mnt/engine/
>> __DIRECT_IO_TEST__
>>
>> If I cancel and try to run the deploy again, I get a different failure:
>>
>> [ ERROR ] Error: Fault reason is "Operation Failed". Fault detail is
>> 

[ovirt-users] Re: Hyperconverged Ovirt + ZFS

[Thomas Simmons]

Hello Darrell,

I can report back that after making all of the config changes you noted,
deployment completed and hosted engine is up and running! Hyperconverged
Ovirt 4.2 on ZFS! Thank you sir!

On Thu, Nov 15, 2018 at 6:09 PM Darrell Budic 
wrote:

> I did this in the past and didn’t have any trouble with gluster/ZFS, but
> 4.2.x probably does more validation.
>
> I recommend these settings on your zfs volumes, I set mine at the root(v0
> here) and let them inherit:
>
> required:
> v0xattr sa local
> v0acltype   posixacl   local
> optional but I recommend them:
> v0relatime  on local
> v0compression   lz4local
>
> For gluster, I think it checks that it’s been “optimized for virt
> storage”. Either apply the virt group or set the options you’ll find in
> /var/lib/glusterd/groups/virt.
>
> Note that I don’t recommend the default settings for
> cluster.shd-max-threads & cluster.shd-wait-qlength. They can swamp your
> machines during heals unless you have a lot of cores and ram. You get a
> slightly faster heal, but often have VMs pausing for storage or other odd
> ball storage related errors. I prefer max-threads = 1 or maybe 2,
> and wait-qlength=1024 or 2048. These are per volume, so they hit harder
> than you think they will if you have a lot of volumes running.
>
> Also make sure the gluster volumes themselves got set to 36.36 for
> owner.group, doesn’t matter for the bricks. Can do it with volume settings
> or mount the volume and set it manually.
>
> Hope it helps!
>
>   -Darrell
>
>
> On Nov 15, 2018, at 6:28 AM, Thomas Simmons  wrote:
>
> Hello All,
>
> I recently took a new job in a RedHat shop and I'd like to move all of my
> homelab systems to RedHat upstream products to better align with what I
> manage at work. I had a "custom" (aka - hacked together) 3-node
> Hyperconverged XenServer cluster and would like to get this moved over to
> Ovirt (I'm currently testing with 4.2.7). Unfortunately, my storage is
> limited to software RAID with a 128GB SSD for cache. If at all possible, I
> would prefer to use ZFS (RAIDZ+ZIL+L2ARC) instead of MD RAID + lvmcache,
> however I'm not able to get this working and I'm not sure why. My ZFS and
> Gluster configuration is working - at least where I can manually mount all
> of my gluster volumes from all of my nodes, however, hosted-engine --deploy
> fails. I understand this isn't an out of the box configuration for Ovirt,
> however I see no reason why this shouldn't work. I would think this would
> be no different than using any other Gluster volume for the engine
> datastore, Am I missing something that would prevent this from working?
>
> [ INFO  ] TASK [Add glusterfs storage domain]
> [ ERROR ] Error: Fault reason is "Operation Failed". Fault detail is
> "[Storage Domain target is unsupported]". HTTP response code is 400.
> [ ERROR ] fatal: [localhost]: FAILED! => {"changed": false,
> "deprecations": [{"msg": "The 'ovirt_storage_domains' module is being
> renamed 'ovirt_storage_domain'", "version": 2.8}], "msg": "Fault reason is
> \"Operation Failed\". Fault detail is \"[Storage Domain target is
> unsupported]\". HTTP response code is 400."}
>
> Even though it fails, it appears to have mounted and written
> __DIRECT_IO_TEST__ to my Gluster volume:
>
> [root@vmh1 ~]# mount -t glusterfs localhost:/engine /mnt/engine/
> [root@vmh1 ~]# ls /mnt/engine/
> __DIRECT_IO_TEST__
>
> If I cancel and try to run the deploy again, I get a different failure:
>
> [ ERROR ] Error: Fault reason is "Operation Failed". Fault detail is
> "[Error creating a storage domain]". HTTP response code is 400.
> [ ERROR ] fatal: [localhost]: FAILED! => {"changed": false,
> "deprecations": [{"msg": "The 'ovirt_storage_domains' module is being
> renamed 'ovirt_storage_domain'", "version": 2.8}], "msg": "Fault reason is
> \"Operation Failed\". Fault detail is \"[Error creating a storage
> domain]\". HTTP response code is 400."}
>
> Gluster seems ok...
>
> [root@vmh1 /]# gluster volume info engine
>
> Volume Name: engine
> Type: Replicate
> Volume ID: 2e34f8f5-0129-4ba5-983f-1eb5178deadc
> Status: Started
> Snapshot Count: 0
> Number of Bricks: 1 x 3 = 3
> Transport-type: tcp
> Bricks:
> Brick1: vmh1-ib:/zpool1/engine
> Brick2: vmh2-ib:/zpool1/engine
> Brick3: vmh3-ib:/zpool1/engine
> Options Reconfigured:
> transport.address-family: inet
> nfs.disable: on
> performance.client-io-threads: off
>
> ZFS looks good too...
>
> [root@vmh1 ~]# ansible ovirthosts -m shell -a 'zpool status' -b
> vmh1 | CHANGED | rc=0 >>
>   pool: zpool1
>  state: ONLINE
>   scan: none requested
> config:
>
> NAMESTATE READ WRITE CKSUM
> zpool1  ONLINE   0 0 0
>   sdc   ONLINE   0 0 0
>   sdd   ONLINE   0 0 0
>   sde   ONLINE   0 0 0
> logs
>   sdb2  ONLINE   0 0 0
> cache
>   sdb1  ONLINE

[ovirt-users] Re: Hyperconverged Ovirt + ZFS

[Darrell Budic]

Well, personally I know ZFS and I don’t know VDO. Going to have to check it out 
now that I know it exists, sounds interesting to have it at the dm layer. I 
don’t use it exclusively either, but have been finding it useful for 
compression.

What is your source for the statement that COW filesystems have downsides over 
time for VM workloads?

> On Nov 16, 2018, at 3:11 PM, Donny Davis  wrote:
> 
> Why not just use the built in stuff like VDO. What benefits does ZFS bring 
> for the use case? 
> For most vm based workloads ZFS is the opposite of ideal over the lifecycle 
> of a VM. COW filesystems have downsides over time. 
> 
> 
> 
> 
> On Thu, Nov 15, 2018 at 6:09 PM Darrell Budic  > wrote:
> I did this in the past and didn’t have any trouble with gluster/ZFS, but 
> 4.2.x probably does more validation.
> 
> I recommend these settings on your zfs volumes, I set mine at the root(v0 
> here) and let them inherit:
> 
> required:
> v0xattr sa local
> v0acltype   posixacl   local
> optional but I recommend them:
> v0relatime  on local
> v0compression   lz4local
> 
> For gluster, I think it checks that it’s been “optimized for virt storage”. 
> Either apply the virt group or set the options you’ll find in 
> /var/lib/glusterd/groups/virt.
> 
> Note that I don’t recommend the default settings for cluster.shd-max-threads 
> & cluster.shd-wait-qlength. They can swamp your machines during heals unless 
> you have a lot of cores and ram. You get a slightly faster heal, but often 
> have VMs pausing for storage or other odd ball storage related errors. I 
> prefer max-threads = 1 or maybe 2, and wait-qlength=1024 or 2048. These are 
> per volume, so they hit harder than you think they will if you have a lot of 
> volumes running.
> 
> Also make sure the gluster volumes themselves got set to 36.36 for 
> owner.group, doesn’t matter for the bricks. Can do it with volume settings or 
> mount the volume and set it manually.
> 
> Hope it helps!
> 
>   -Darrell
> 
> 
>> On Nov 15, 2018, at 6:28 AM, Thomas Simmons > > wrote:
>> 
>> Hello All,
>> 
>> I recently took a new job in a RedHat shop and I'd like to move all of my 
>> homelab systems to RedHat upstream products to better align with what I 
>> manage at work. I had a "custom" (aka - hacked together) 3-node 
>> Hyperconverged XenServer cluster and would like to get this moved over to 
>> Ovirt (I'm currently testing with 4.2.7). Unfortunately, my storage is 
>> limited to software RAID with a 128GB SSD for cache. If at all possible, I 
>> would prefer to use ZFS (RAIDZ+ZIL+L2ARC) instead of MD RAID + lvmcache, 
>> however I'm not able to get this working and I'm not sure why. My ZFS and 
>> Gluster configuration is working - at least where I can manually mount all 
>> of my gluster volumes from all of my nodes, however, hosted-engine --deploy 
>> fails. I understand this isn't an out of the box configuration for Ovirt, 
>> however I see no reason why this shouldn't work. I would think this would be 
>> no different than using any other Gluster volume for the engine datastore, 
>> Am I missing something that would prevent this from working?
>> 
>> [ INFO  ] TASK [Add glusterfs storage domain]
>> [ ERROR ] Error: Fault reason is "Operation Failed". Fault detail is 
>> "[Storage Domain target is unsupported]". HTTP response code is 400.
>> [ ERROR ] fatal: [localhost]: FAILED! => {"changed": false, "deprecations": 
>> [{"msg": "The 'ovirt_storage_domains' module is being renamed 
>> 'ovirt_storage_domain'", "version": 2.8}], "msg": "Fault reason is 
>> \"Operation Failed\". Fault detail is \"[Storage Domain target is 
>> unsupported]\". HTTP response code is 400."}
>> 
>> Even though it fails, it appears to have mounted and written 
>> __DIRECT_IO_TEST__ to my Gluster volume:
>> 
>> [root@vmh1 ~]# mount -t glusterfs localhost:/engine /mnt/engine/
>> [root@vmh1 ~]# ls /mnt/engine/
>> __DIRECT_IO_TEST__
>> 
>> If I cancel and try to run the deploy again, I get a different failure:
>> 
>> [ ERROR ] Error: Fault reason is "Operation Failed". Fault detail is "[Error 
>> creating a storage domain]". HTTP response code is 400.
>> [ ERROR ] fatal: [localhost]: FAILED! => {"changed": false, "deprecations": 
>> [{"msg": "The 'ovirt_storage_domains' module is being renamed 
>> 'ovirt_storage_domain'", "version": 2.8}], "msg": "Fault reason is 
>> \"Operation Failed\". Fault detail is \"[Error creating a storage domain]\". 
>> HTTP response code is 400."}
>> 
>> Gluster seems ok...
>> 
>> [root@vmh1 /]# gluster volume info engine
>>  
>> Volume Name: engine
>> Type: Replicate
>> Volume ID: 2e34f8f5-0129-4ba5-983f-1eb5178deadc
>> Status: Started
>> Snapshot Count: 0
>> Number of Bricks: 1 x 3 = 3
>> Transport-type: tcp
>> Bricks:
>> Brick1: vmh1-ib:/zpool1/engine
>> Brick2: 

[ovirt-users] Engine ISO Uploader - SSL Peer Not Trusted

[Shawn Weeks]

Trying to upload an iso using engine-iso-uploader on a hosted-engine instance 
and I'm getting an SSL Error.  I followed the directions at 
https://www.ovirt.org/documentation/admin-guide/appe-oVirt_and_SSL/ to setup 
SSL and am able to login to the Admin console without an issue. Also checked 
that things like curl recognize the CA correctly. Not sure where 
engine-iso-uploader is getting it's trust store.

[root@cloud ~]# engine-iso-uploader list
Please provide the REST API password for the admin@internal oVirt Engine user 
(CTRL+D to abort):
ERROR: Unable to connect to REST API at 
https://cloud.dev.example.com:443/ovirt-engine/api due to SDK error
Message: Error while sending HTTP request: (60, "Peer's certificate issuer has 
been marked as not trusted by the user.")

What am I missing?

Thanks
Shawn
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[ovirt-users] Increasing an Existing iSCSI Storage Domain

[Brian Wilson]

My Question is not so much in how to do this as i have been able to take an 
existing Storage domain and increase its size with adding another LUN.   My 
Question is how will a failure of one of the LUNs be handled by the engine and 
how will it effect the VMs running on it.   

Let me setup an example to better illustrate.

Ovirt Node has ISCSI storage domain comprised of 1 Lun from 1 ISCSI based SAN 
and 2 LUNs from another.  So a total of 3 Luns making up the one storage domain.

Now there is an issue with the Storage array providing the single lun.   What 
happens?   How do you know what VMs are running on each extent?


TIA 
Brian
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[ovirt-users] How to do per-datacenter/cluster permissions?

[nyhagen]

Hello!

I'm evaluating oVirt for our company, and one thing we need to verify is that 
users only have access to virtual machines/clusters that they should have 
access to. I have the users set up from LDAP, and I added the UserRole to them, 
however it seems like they, by default, have access to every VM available. How 
do I go about limiting what VMs they have access to? I'd assume I'd have to 
limit access on a datacenter or cluster level, but I can't seem to find any 
documentation as to how to do this.
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[ovirt-users] Re: Hyperconverged Ovirt + ZFS

[Donny Davis]

Why not just use the built in stuff like VDO. What benefits does ZFS bring
for the use case?
For most vm based workloads ZFS is the opposite of ideal over the lifecycle
of a VM. COW filesystems have downsides over time.




On Thu, Nov 15, 2018 at 6:09 PM Darrell Budic 
wrote:

> I did this in the past and didn’t have any trouble with gluster/ZFS, but
> 4.2.x probably does more validation.
>
> I recommend these settings on your zfs volumes, I set mine at the root(v0
> here) and let them inherit:
>
> required:
> v0xattr sa local
> v0acltype   posixacl   local
> optional but I recommend them:
> v0relatime  on local
> v0compression   lz4local
>
> For gluster, I think it checks that it’s been “optimized for virt
> storage”. Either apply the virt group or set the options you’ll find in
> /var/lib/glusterd/groups/virt.
>
> Note that I don’t recommend the default settings for
> cluster.shd-max-threads & cluster.shd-wait-qlength. They can swamp your
> machines during heals unless you have a lot of cores and ram. You get a
> slightly faster heal, but often have VMs pausing for storage or other odd
> ball storage related errors. I prefer max-threads = 1 or maybe 2,
> and wait-qlength=1024 or 2048. These are per volume, so they hit harder
> than you think they will if you have a lot of volumes running.
>
> Also make sure the gluster volumes themselves got set to 36.36 for
> owner.group, doesn’t matter for the bricks. Can do it with volume settings
> or mount the volume and set it manually.
>
> Hope it helps!
>
>   -Darrell
>
>
> On Nov 15, 2018, at 6:28 AM, Thomas Simmons  wrote:
>
> Hello All,
>
> I recently took a new job in a RedHat shop and I'd like to move all of my
> homelab systems to RedHat upstream products to better align with what I
> manage at work. I had a "custom" (aka - hacked together) 3-node
> Hyperconverged XenServer cluster and would like to get this moved over to
> Ovirt (I'm currently testing with 4.2.7). Unfortunately, my storage is
> limited to software RAID with a 128GB SSD for cache. If at all possible, I
> would prefer to use ZFS (RAIDZ+ZIL+L2ARC) instead of MD RAID + lvmcache,
> however I'm not able to get this working and I'm not sure why. My ZFS and
> Gluster configuration is working - at least where I can manually mount all
> of my gluster volumes from all of my nodes, however, hosted-engine --deploy
> fails. I understand this isn't an out of the box configuration for Ovirt,
> however I see no reason why this shouldn't work. I would think this would
> be no different than using any other Gluster volume for the engine
> datastore, Am I missing something that would prevent this from working?
>
> [ INFO  ] TASK [Add glusterfs storage domain]
> [ ERROR ] Error: Fault reason is "Operation Failed". Fault detail is
> "[Storage Domain target is unsupported]". HTTP response code is 400.
> [ ERROR ] fatal: [localhost]: FAILED! => {"changed": false,
> "deprecations": [{"msg": "The 'ovirt_storage_domains' module is being
> renamed 'ovirt_storage_domain'", "version": 2.8}], "msg": "Fault reason is
> \"Operation Failed\". Fault detail is \"[Storage Domain target is
> unsupported]\". HTTP response code is 400."}
>
> Even though it fails, it appears to have mounted and written
> __DIRECT_IO_TEST__ to my Gluster volume:
>
> [root@vmh1 ~]# mount -t glusterfs localhost:/engine /mnt/engine/
> [root@vmh1 ~]# ls /mnt/engine/
> __DIRECT_IO_TEST__
>
> If I cancel and try to run the deploy again, I get a different failure:
>
> [ ERROR ] Error: Fault reason is "Operation Failed". Fault detail is
> "[Error creating a storage domain]". HTTP response code is 400.
> [ ERROR ] fatal: [localhost]: FAILED! => {"changed": false,
> "deprecations": [{"msg": "The 'ovirt_storage_domains' module is being
> renamed 'ovirt_storage_domain'", "version": 2.8}], "msg": "Fault reason is
> \"Operation Failed\". Fault detail is \"[Error creating a storage
> domain]\". HTTP response code is 400."}
>
> Gluster seems ok...
>
> [root@vmh1 /]# gluster volume info engine
>
> Volume Name: engine
> Type: Replicate
> Volume ID: 2e34f8f5-0129-4ba5-983f-1eb5178deadc
> Status: Started
> Snapshot Count: 0
> Number of Bricks: 1 x 3 = 3
> Transport-type: tcp
> Bricks:
> Brick1: vmh1-ib:/zpool1/engine
> Brick2: vmh2-ib:/zpool1/engine
> Brick3: vmh3-ib:/zpool1/engine
> Options Reconfigured:
> transport.address-family: inet
> nfs.disable: on
> performance.client-io-threads: off
>
> ZFS looks good too...
>
> [root@vmh1 ~]# ansible ovirthosts -m shell -a 'zpool status' -b
> vmh1 | CHANGED | rc=0 >>
>   pool: zpool1
>  state: ONLINE
>   scan: none requested
> config:
>
> NAMESTATE READ WRITE CKSUM
> zpool1  ONLINE   0 0 0
>   sdc   ONLINE   0 0 0
>   sdd   ONLINE   0 0 0
>   sde   ONLINE   0 0 0
> logs
>   sdb2  ONLINE   0 0 0
> 

[ovirt-users] Re: VMs import over slow 1gig interface instead of fast 10gig interface?

[Nir Soffer]

On Fri, Nov 16, 2018, 21:51 Jacob Green  Ok, so I want to try and more thoroughly explain my situation. I want
> to better understand what is happening, and if there is a way to force
> import over the faster connection.
>
> Today I have two Ovirt environments, one on 4.1 and one on 4.2, on the
> new environment we have migrated to new VLANs for Management and Data.
>
> The export domain is a NFS domain hosted on a Trunas device that has
> an ip address of X.X.12.100.
>
> Our host has multiple Ethernet connections, one Bonded 20Gigabit
> interface. That is where we have the ovirtmgmt profile. And a secondary 1
> Gigabit interface that we call our VLAN12 profile or server VLAN.
>
>  *The problem *When importing a VM from the export domain, the import
> is happening over the 1Gigabit interface on the VLAN12 profile. Instead of
> the 20gigabit Bonded interface on VLAN 100.
>
> *My understanding *So I probably just misunderstand how this works,
> but here is what I thought should happen, in the *Setup Host Network*
> screen for this host I have the ovirtmgmt on VLAN100 with the bonded
> 20Gigabit interface performing the following. "*Management, Display,
> Migration, VM and Default Route*." Then I have the secondary 1 Gigabit
> interface just doing "*VM*" on VLAN12. What I thought should happen is
> that anything Migration related "*Includes importing from export domain?*"
>
Importing vms from export domain is a storage operation, and it is nor
related to migration.

Maybe Dan can explain why accessing storage is done on the wrong network.

Nir

> shouldd happen on the Migration interface, which in my case is the
> ovritmgmt interface on VLAN100.
>
> I have also confirmed that I can ping from the VLAN100 ovirtmgmt interface
> to the storage on VLAN12. So there is connectivity from that interface to
> the storage. What I am trying to figure out is there a way to force it to
> do imports over the 20Gigabit interface that resides on VLAN100 instead of
> the slower VLAN12 interface, that is just there for general VM connectivity.
>
>
> Thank you for any advice or guidance on this matter.
>
>
>
> --
> Jacob Green
>
> Systems Admin
>
> American Alloy Steel
>
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[ovirt-users] VMs import over slow 1gig interface instead of fast 10gig interface?

[Jacob Green]

Ok, so I want to try and more thoroughly explain my situation. I 
want to better understand what is happening, and if there is a way to 
force import over the faster connection.


Today I have two Ovirt environments, one on 4.1 and one on 4.2, on 
the new environment we have migrated to new VLANs for Management and Data.


The export domain is a NFS domain hosted on a Trunas device that 
has an ip address of X.X.12.100.


Our host has multiple Ethernet connections, one Bonded 20Gigabit 
interface. That is where we have the ovirtmgmt profile. And a secondary 
1 Gigabit interface that we call our VLAN12 profile or server VLAN.


*The problem *When importing a VM from the export domain, the import 
is happening over the 1Gigabit interface on the VLAN12 profile. Instead 
of the 20gigabit Bonded interface on VLAN 100.


*My understanding *So I probably just misunderstand how this works, 
but here is what I thought should happen, in the *Setup Host Network* 
screen for this host I have the ovirtmgmt on VLAN100 with the bonded 
20Gigabit interface performing the following. "*Management, Display, 
Migration, VM and Default Route*." Then I have the secondary 1 Gigabit 
interface just doing "*VM*" on VLAN12. What I thought should happen is 
that anything Migration related "*/Includes importing from export 
domain?/*" should happen on the Migration interface, which in my case is 
the ovritmgmt interface on VLAN100.


I have also confirmed that I can ping from the VLAN100 ovirtmgmt 
interface to the storage on VLAN12. So there is connectivity from that 
interface to the storage. What I am trying to figure out is there a way 
to force it to do imports over the 20Gigabit interface that resides on 
VLAN100 instead of the slower VLAN12 interface, that is just there for 
general VM connectivity.



Thank you for any advice or guidance on this matter.



--
Jacob Green

Systems Admin

American Alloy Steel

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[ovirt-users] Re: yum error

[Fernando Fuentes]

Valentin,

Thanks for your prompt reply.
I makes sense as I just set this server up and just installed the fcoe
modules... I am a bit confused though... We have FCOE (flexlom) in our
env, As per HP we need the kmod-hpqlgc-qla2xxx.x86_64 which brought down
the mlnx kernel module. It seems like it is but I am still going to
ask... can safely delete the module?:)

Regards,

--
Fernando Fuentes
ffuen...@txweather.org
http://www.txweather.org



On Fri, Nov 16, 2018, at 8:45 AM, Valentin Bajrami wrote:
> Hi Fernando,


> The issue occurred to me a few days ago. To mitigate this I performed
> the following> rpm -e --nodeps mlnx-ofa_kernel
>  yum install
>  http://resources.ovirt.org/pub/yum-repo/ovirt-release42.rpm> This was a side 
> effect of HP repositories we used in the passed to
> install hpssacli and stuff.> HTH


> On 11/16/18 3:14 PM, Fernando Fuentes wrote:
>> Team,  This just started happening.  Error: Package: ovirt-host-4.2.3-
>> 1.el7.x86_64 (@ovirt-4.2) Requires: glusterfs-rdma Removing: 
>> glusterfs-rdma-3.12.15-
>> 1.el7.x86_64 (@ovirt-4.2-centos-gluster312) glusterfs-rdma = 3.12.15-
>> 1.el7 Obsoleted By: mlnx-ofa_kernel-4.3-
>> OFED.4.3.1.0.1.1.g8509e41.3.rhel7u4.x86_64 (spp) Not found Available:
>> glusterfs-rdma-3.8.4-53.el7.centos.x86_64 (base) glusterfs-rdma = 3.8.4-
>> 53.el7.centos Available: glusterfs-rdma-3.8.4-54.15.el7.centos.x86_64
>> (updates) glusterfs-rdma = 3.8.4-54.15.el7.centos Available: 
>> glusterfs-rdma-3.12.0-
>> 1.el7.x86_64 (ovirt-4.2-centos-gluster312)  I cant seem to update.
>> Any ideas why this is happening?  Regards,

>>
> -- Met vriendelijke groeten,  Valentin Bajrami Target Holding> 
> _
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[ovirt-users] Re: yum error

[Valentin Bajrami]

Hi Fernando,

The issue occurred to me a few days ago. To mitigate this I performed
the following

rpm -e --nodeps mlnx-ofa_kernel
yum install http://resources.ovirt.org/pub/yum-repo/ovirt-release42.rpm

This was a side effect of HP repositories we used in the passed to
install hpssacli and stuff.

HTH

On 11/16/18 3:14 PM, Fernando Fuentes wrote:
> Team,
>
> This just started happening.
>
> Error: Package: ovirt-host-4.2.3-1.el7.x86_64 (@ovirt-4.2)
>Requires: glusterfs-rdma
>Removing: glusterfs-rdma-3.12.15-1.el7.x86_64 
> (@ovirt-4.2-centos-gluster312)
>glusterfs-rdma = 3.12.15-1.el7
>Obsoleted By: 
> mlnx-ofa_kernel-4.3-OFED.4.3.1.0.1.1.g8509e41.3.rhel7u4.x86_64 (spp)
>Not found
>Available: glusterfs-rdma-3.8.4-53.el7.centos.x86_64 (base)
>glusterfs-rdma = 3.8.4-53.el7.centos
>Available: glusterfs-rdma-3.8.4-54.15.el7.centos.x86_64 (updates)
>glusterfs-rdma = 3.8.4-54.15.el7.centos
>Available: glusterfs-rdma-3.12.0-1.el7.x86_64 
> (ovirt-4.2-centos-gluster312)
>
> I cant seem to update. Any ideas why this is happening?
>
> Regards,
>
-- 
Met vriendelijke groeten,

Valentin Bajrami
Target Holding 

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[ovirt-users] yum error

[Fernando Fuentes]

Team,

This just started happening.

Error: Package: ovirt-host-4.2.3-1.el7.x86_64 (@ovirt-4.2)
   Requires: glusterfs-rdma
   Removing: glusterfs-rdma-3.12.15-1.el7.x86_64 
(@ovirt-4.2-centos-gluster312)
   glusterfs-rdma = 3.12.15-1.el7
   Obsoleted By: 
mlnx-ofa_kernel-4.3-OFED.4.3.1.0.1.1.g8509e41.3.rhel7u4.x86_64 (spp)
   Not found
   Available: glusterfs-rdma-3.8.4-53.el7.centos.x86_64 (base)
   glusterfs-rdma = 3.8.4-53.el7.centos
   Available: glusterfs-rdma-3.8.4-54.15.el7.centos.x86_64 (updates)
   glusterfs-rdma = 3.8.4-54.15.el7.centos
   Available: glusterfs-rdma-3.12.0-1.el7.x86_64 
(ovirt-4.2-centos-gluster312)

I cant seem to update. Any ideas why this is happening?

Regards,

-- 
Fernando Fuentes
ffuen...@txweather.org
http://www.txweather.org
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[ovirt-users] Re: how to allow VM to query external DHCP server

[Jarosław Prokopowski]

It came out it was the OS fault. Some Linux distributions do not send
correct DHCP client identifier.

To fix this I had to create /etc/dhcp/dhclient.conf file with:
send dhcp-client-identifier = hardware;

Jarek


On Thu, Nov 15, 2018 at 3:39 PM Jarosław Prokopowski 
wrote:

> Hi,
>
> It seems my VMs are not able to send DHCP requests to external DHCP server
> located in the same network as oVirt hosts. Can anyone tell me how I can
> enable this?
>
> Thanks
> Jarek
>
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[ovirt-users] Re: oVirt monitoring

[Staniforth, Paul]

Hello George,
   you should be able to query the DWH, depending how 
it's configured you should be able to query hourly/daily statistics for up to 5 
years.
https://www.ovirt.org/documentation/data-warehouse/chap-About_History_Database_Reports_and_Dashboards/
There are also a number of monitoring options including the new metrics store.
https://www.ovirt.org/documentation/metrics-user-guide/metrics-user-guide/

Regards,
  Paul S.


From: b.yu...@gmail.com 
Sent: 16 November 2018 10:01
To: users@ovirt.org
Subject: [ovirt-users] oVirt monitoring

Hello,

I'm trying to do some performance monitoring on our oVirt and want to ask if 
someone has any experience with it? Currently I'm trying Red Hat Virutalization 
tool which has REST API, where you can get statistics per host, vm, disk and 
nic. Problem is that you cannot get any historical data via rest api (at least 
I didn't find any way to do it) and almost all metrics are gauge values over 
some interval (couldn't find it documentation, but it looks like they are 
updated every 15 s). I surely don't want to query whole environment every 15 
seconds and missing some values is also not an option since I could miss some 
spikes in performance.

Any help is appreciated!
George
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[ovirt-users] Re: Ovirt VNC Server

[Karli Sjöberg]

Den 2018-11-16 kl. 11:18, skrev Hari Prasanth Loganathan:
> Hi all,
>
> I installed the VNC server in one of the VM created via Ovirt.
> Now when I try to take the remote for it, It is showing only a blank
> black screen.


Maybe a dumb question, but have you tried to press any buttons on the
keyboard or move the mouse around inside the VM? Maybe the screen has
just gone to sleep?

/K


>
> Could someone help me with this?
>
> image.png
>
> Thanks,
> Hari
>
>
> On Fri, Nov 16, 2018 at 2:48 AM Hari Prasanth Loganathan
>  > wrote:
>
> Hi Wesley,
>
> I described my query clearly here,
> https://stackoverflow.com/questions/53328028/tight-vnc-server-and-gucamole
>
> Please check this.
>
> Thanks,
> Hari
>
> On Fri, Nov 16, 2018 at 2:30 AM Hari Prasanth Loganathan
>  > wrote:
>
> Thanks Wesley,
>
> I followed the step:
> 
> https://www.digitalocean.com/community/tutorials/how-to-install-and-configure-vnc-on-ubuntu-18-04
> provided in this link to install tight VNC.
> I can see the 5901 port is used for VNC server in my VM
>
> Now As per the link you provided, I tried
>
> |ssh -L 5901:127.0.0.1 :5901 -C -N -l test
> 172.1.1.1 |
>
> |Now when I tried with Remmina Desktop client (VNC), It is
> showing only a blank page. |
>
> |Also after this bonding, Do I need to use the IP address as
> 127.0.0.1 and port as 5901 in guacamole? |
>
> |Thanks, |
>
> |Hari |
>
> ||
>
> ||
>
>
>
>
>
> On Fri, Nov 16, 2018 at 12:45 AM Wesley Stewart
> mailto:wstewa...@gmail.com>> wrote:
>
> Whoops, I realize now that you are trying to connect to
> the oVirt VNC server to see the guest?
>
> Maybe it would be easier to just run VNC on the server you
> want?
> 
> https://www.digitalocean.com/community/tutorials/how-to-install-and-configure-vnc-on-ubuntu-18-04
>
>
> On Thu, Nov 15, 2018 at 2:13 PM Wesley Stewart
> mailto:wstewa...@gmail.com>> wrote:
>
> So your VM has IP address 172.1.1.1 and it is running
> a VNC server?  I do not believe this is an oVirt
> issue, it sounds like a VNC issue.
>
> On the VM hosting the VNC server, try checking Netstat
> to make sure that VNC is listening.
>
> netstat -tulpn
>
>
> Once you get the port number, make sure your firewall
> is allowing the port as well.
>
> You can also setup the VNC configuration in
> Guacamole's web interface.  I run CoreOS as a guest
> and I have a guacamole instance setup in docker that I
> use.
>
>
> On Thu, Nov 15, 2018 at 2:05 PM Hari Prasanth
> Loganathan  > wrote:
>
> Hi Team,
>
> I have a VM for which I applied the console
> configuration as VNC.
> Now I have installed a tool Guacamole to connect
> to this VM from outside.
> As per Guacamole, It expects the following
> parameter to connect to the VM using VNC,
>
> 
> vnc
> 172.1.1.1
> /|5901|/
> 
>
> I understand that the IP Address is VM's IP address but 
> what is the port I need to use for connecting to the VM? What is the  VNC 
> server port in ovirt?
>
> Anyhelp is appreciated. 
>
> Thanks,
>
> Hari
>
>
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[ovirt-users] Re: OVS and Ovirt integration questions

[Marcin Mirecki]

On Fri, Nov 16, 2018 at 10:26 AM Ales Musil  wrote:

>
>
> On Thu, Nov 15, 2018 at 10:17 AM <0pk...@riseup.net> wrote:
>
>> Hello,
>>
>> After having integrated OVS with Ovirt and enabled it as default network
>> provider I am facing the following issues.
>>
>
> We are using OVN as network provider.
>
>
>>
>> I can see with "ovs-vsctl show" that the virtual switch / bridge called
>> "br-int" is created. I can see interfaces being added / removed to it as I
>> start / stop VMs.
>>
>> [root@*** ~]# ovs-vsctl show
>> 78e883f9-f074-4292-afce-bb829ded856b
>> Bridge br-int
>> fail_mode: secure
>> Port "vnet6"
>> Interface "vnet6"
>> Port br-int
>> Interface br-int
>> type: internal
>> Port "vnet4"
>> Interface "vnet4"
>> ovs_version: "2.9.0"
>>
>> Now I for example want to create a new interface as shown:
>>
>> ip tuntap add mode tap sniff0
>> ovs-vsctl add-port br-int sniff0 -- --id=@p get port sniff0 -- --id=@m
>> create mirror name=m0 select-all=true output-port=@p -- set bridge br-int
>> mirrors=@m
>> fae36943-2ca7-4914-9679-0b881cd062d8
>>
>> Its created, but how do I assign this sniffing interface to a ovirt VM?
>
>
> If I understand your intentions correctly from now on you just need to add
> OVN network connected to physical 'sniff0'. This can be done via UI in
> Networks -> New network -> Check "Create on physical network" -> Select
> correct provider -> Change to "Custom" and type the 'sniff0' in the
> textbox. From now on you can use vNIC profile of this network and assign it
> to desired VM.
>
>
>
>> also, how can I create sniffing ports listening only on a subset of
>> interfaces if they get dynamically created / removed? vnet6 points to host
>> A now, but after shutting it down starting a few other VMs it will point to
>> host B...
>
>
Matching the interfaces by name is problematic, but I assume you are more
interested about sniffing a specific vm, or a specific interface (with a
known mac)

You could use the vdsm hooks for this.

Every time you plug/unplug an interface, the vdsm host will look for hook
scripts inside:
   /usr/libexec/vdsm/hooks/after_nic_hotplug
   /usr/libexec/vdsm/hooks/after_nic_hotunplug
and execute them after the nic is plugged/unplugged.

Inside the scripts you can retrieve the information about the vm, and the
plugged nic.
A sample script would look as follows:
-
#!/usr/bin/python
import os
vm_id = os.environ['vmId']
nic_xml_file = os.environ['_hook_domxml']
--
with the vm_id being the vm uuid:

and the nic xml file containing something like:


You could identify you port by mac or interfaceid (id of the ovn logical
port).

You could now use this information to adjust your mirror entries.


>
> Adding @Dominik 
>
>
>> How do I control to what vm the vnetX nic gets assigned?
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>
> Hopefully this helps.
>
> Regards,
> Ales Musil
> --
>
> ALES MUSIL
> Associate Software Engineer - rhv network
>
> Red Hat EMEA 
>
>
> amu...@redhat.com   IM: amusil
> 
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[ovirt-users] Re: Ovirt VNC Server

[Hari Prasanth Loganathan]

Hi all,

I installed the VNC server in one of the VM created via Ovirt.
Now when I try to take the remote for it, It is showing only a blank black
screen.

Could someone help me with this?

[image: image.png]

Thanks,
Hari


On Fri, Nov 16, 2018 at 2:48 AM Hari Prasanth Loganathan <
hariprasant...@msystechnologies.com> wrote:

> Hi Wesley,
>
> I described my query clearly here,
> https://stackoverflow.com/questions/53328028/tight-vnc-server-and-gucamole
>
> Please check this.
>
> Thanks,
> Hari
>
> On Fri, Nov 16, 2018 at 2:30 AM Hari Prasanth Loganathan <
> hariprasant...@msystechnologies.com> wrote:
>
>> Thanks Wesley,
>>
>> I followed the step:
>> https://www.digitalocean.com/community/tutorials/how-to-install-and-configure-vnc-on-ubuntu-18-04
>> provided in this link to install tight VNC.
>> I can see the 5901 port is used for VNC server in my VM
>>
>> Now As per the link you provided, I tried
>>
>> ssh -L 5901:127.0.0.1:5901 -C -N -l test 172.1.1.1
>>
>> Now when I tried with Remmina Desktop client (VNC), It is showing only a 
>> blank page.
>>
>> Also after this bonding, Do I need to use the IP address as 127.0.0.1 and 
>> port as 5901 in guacamole?
>>
>> Thanks,
>>
>> Hari
>>
>>
>>
>>
>>
>>
>>
>> On Fri, Nov 16, 2018 at 12:45 AM Wesley Stewart 
>> wrote:
>>
>>> Whoops, I realize now that you are trying to connect to the oVirt VNC
>>> server to see the guest?
>>>
>>> Maybe it would be easier to just run VNC on the server you want?
>>>
>>> https://www.digitalocean.com/community/tutorials/how-to-install-and-configure-vnc-on-ubuntu-18-04
>>>
>>>
>>> On Thu, Nov 15, 2018 at 2:13 PM Wesley Stewart 
>>> wrote:
>>>
 So your VM has IP address 172.1.1.1 and it is running a VNC server?  I
 do not believe this is an oVirt issue, it sounds like a VNC issue.

 On the VM hosting the VNC server, try checking Netstat to make sure
 that VNC is listening.

 netstat -tulpn


 Once you get the port number, make sure your firewall is allowing the
 port as well.

 You can also setup the VNC configuration in Guacamole's web interface.
 I run CoreOS as a guest and I have a guacamole instance setup in docker
 that I use.


 On Thu, Nov 15, 2018 at 2:05 PM Hari Prasanth Loganathan <
 hariprasant...@msystechnologies.com> wrote:

> Hi Team,
>
> I have a VM for which I applied the console configuration as VNC.
> Now I have installed a tool Guacamole to connect to this VM from
> outside.
> As per Guacamole, It expects the following parameter to connect to the
> VM using VNC,
>
> 
> vnc
> 172.1.1.1
> *5901*
> 
>
> I understand that the IP Address is VM's IP address but what is the port 
> I need to use for connecting to the VM? What is the  VNC server port in 
> ovirt?
>
> Anyhelp is appreciated.
>
>
> Thanks,
>
> Hari
>
>
> DISCLAIMER - *MSysTechnologies LLC*
>
> This email message, contents and its attachments may contain
> confidential, proprietary or legally privileged information and is 
> intended
> solely for the use of the individual or entity to whom it is actually
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[ovirt-users] Foreman integration / Network integration (storage)

[jeanbaptiste]

Hello everybody,

I use oVirt with Foreman to bare metal provision hypervisor.
On foreman side,  I use excellent Discovery plugin firstly. Afterthat I 
configure a "bond0" lagg on Network host tab.
Into this bond0, I create some "virtual interface" (bond0.15 for example) with 
a static IP assignation via integrated Foreman IPAM.

All is pretty cool, but after oVirt installation is done, I'm "forced" via 
postinstall to apply:
Add "NM_Controlled=no" to all my bond0.* interfaces. 
Afterthat on oVirt , Host, "Setup Host Network", I'm able to move my network to 
the host and have automatically the IP address "configured" since read from the 
ifcfg file.
This method seem to work but only in "one time mode". There is no real link 
between oVirt and Foreman for IP assignement. 

Do you use anothers way to provision bare metal hypervisor and have automatic 
IP assignement (for storage network for ex) between these two excellent tools ?

thanks !
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[ovirt-users] oVirt monitoring

[b . yuri8]

Hello,

I'm trying to do some performance monitoring on our oVirt and want to ask if 
someone has any experience with it? Currently I'm trying Red Hat Virutalization 
tool which has REST API, where you can get statistics per host, vm, disk and 
nic. Problem is that you cannot get any historical data via rest api (at least 
I didn't find any way to do it) and almost all metrics are gauge values over 
some interval (couldn't find it documentation, but it looks like they are 
updated every 15 s). I surely don't want to query whole environment every 15 
seconds and missing some values is also not an option since I could miss some 
spikes in performance.

Any help is appreciated!
George
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[ovirt-users] Re: OVS and Ovirt integration questions

[Ales Musil]

On Thu, Nov 15, 2018 at 10:17 AM <0pk...@riseup.net> wrote:

> Hello,
>
> After having integrated OVS with Ovirt and enabled it as default network
> provider I am facing the following issues.
>

We are using OVN as network provider.


>
> I can see with "ovs-vsctl show" that the virtual switch / bridge called
> "br-int" is created. I can see interfaces being added / removed to it as I
> start / stop VMs.
>
> [root@*** ~]# ovs-vsctl show
> 78e883f9-f074-4292-afce-bb829ded856b
> Bridge br-int
> fail_mode: secure
> Port "vnet6"
> Interface "vnet6"
> Port br-int
> Interface br-int
> type: internal
> Port "vnet4"
> Interface "vnet4"
> ovs_version: "2.9.0"
>
> Now I for example want to create a new interface as shown:
>
> ip tuntap add mode tap sniff0
> ovs-vsctl add-port br-int sniff0 -- --id=@p get port sniff0 -- --id=@m
> create mirror name=m0 select-all=true output-port=@p -- set bridge br-int
> mirrors=@m
> fae36943-2ca7-4914-9679-0b881cd062d8
>
> Its created, but how do I assign this sniffing interface to a ovirt VM?


If I understand your intentions correctly from now on you just need to add
OVN network connected to physical 'sniff0'. This can be done via UI in
Networks -> New network -> Check "Create on physical network" -> Select
correct provider -> Change to "Custom" and type the 'sniff0' in the
textbox. From now on you can use vNIC profile of this network and assign it
to desired VM.



> also, how can I create sniffing ports listening only on a subset of
> interfaces if they get dynamically created / removed? vnet6 points to host
> A now, but after shutting it down starting a few other VMs it will point to
> host B...


Adding @Dominik 


> How do I control to what vm the vnetX nic gets assigned?
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Hopefully this helps.

Regards,
Ales Musil
-- 

ALES MUSIL
Associate Software Engineer - rhv network

Red Hat EMEA 


amu...@redhat.com   IM: amusil

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[ovirt-users] Re: OVS and Ovirt integration questions

[Staniforth, Paul]

Maybe you can create a host hook, if you find a solution I'd be really 
interested as it would solve a lot of problems for us.

Regards,
  Paul S.

From: 0pk...@riseup.net <0pk...@riseup.net>
Sent: 15 November 2018 09:16
To: users@ovirt.org
Subject: [ovirt-users] OVS and Ovirt integration questions

Hello,

After having integrated OVS with Ovirt and enabled it as default network 
provider I am facing the following issues.

I can see with "ovs-vsctl show" that the virtual switch / bridge called 
"br-int" is created. I can see interfaces being added / removed to it as I 
start / stop VMs.

[root@*** ~]# ovs-vsctl show
78e883f9-f074-4292-afce-bb829ded856b
Bridge br-int
fail_mode: secure
Port "vnet6"
Interface "vnet6"
Port br-int
Interface br-int
type: internal
Port "vnet4"
Interface "vnet4"
ovs_version: "2.9.0"

Now I for example want to create a new interface as shown:

ip tuntap add mode tap sniff0
ovs-vsctl add-port br-int sniff0 -- --id=@p get port sniff0 -- --id=@m create 
mirror name=m0 select-all=true output-port=@p -- set bridge br-int mirrors=@m
fae36943-2ca7-4914-9679-0b881cd062d8

Its created, but how do I assign this sniffing interface to a ovirt VM? also, 
how can I create sniffing ports listening only on a subset of interfaces if 
they get dynamically created / removed? vnet6 points to host A now, but after 
shutting it down starting a few other VMs it will point to host B...

How do I control to what vm the vnetX nic gets assigned?
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