Re: [ovirt-users] 3.6 : iSCSI LUN not detected

[Alexis HAUSER]

> Yes, you cannot remove the master storage domain, so you need to create 
> another
> domain and make it the master. Then you will be able to detach the
> original storage
> domain properly.

> Nir

I would love to do that...But it's not possible as long as the master data 
domain is in maintenance mode. And it doesn't activate...

I'm now stuck with second data domain with unknown status, same for 
hosted_storage and master data domain still in maintenance mode.

I can't activate any of the storage and can't reinitialize data center...
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Re: [ovirt-users] 3.6 : iSCSI LUN not detected

[Nir Soffer]

On Thu, Aug 11, 2016 at 12:27 PM, Alexis HAUSER
 wrote:
>
>> Hi Alexis
>
>> Were you able to resolve your storage LUN issue?
>
>> Regards,
>
>
>> Kevin
>
>
> I am trying the suggested solution on this post by Nir Soffer : reconnect the 
> storage to the older hypervisor and detach it correctly...But it doesn't work 
> :
>
> From the DC :
> 1. I set the storage (which is master data domain) to maintenance mode
> 2. I try to detach it. I get this error message :
>
>  "Error while executing action: Cannot remove the master Storage Domain from 
> the Data Center without another active Storage Domain to take its place.
> -Either activate another Storage Domain in the Data Center, or remove the 
> Data Center.
>
> 3. If I go in the storage domain menu, I get only the "destroy option", not 
> "remove", which is maybe not what I want. I'd like to be able to keep the 
> data on it.
> 4. If I try to remove the datacenter as suggested in the error message I get 
> this error (as the hosted-engine storage is still up) :
>
> "Error while executing action: Cannot remove Data Center which contains 
> active/locked Storage Domains.
> -Please deactivate all domains and wait for tasks to finish before removing 
> the Data Center."
>
> 5. I can't set the hosted engine storage to maintenance
>
> What should I do ?

Yes, you cannot remove the master storage domain, so you need to create another
domain and make it the master. Then you will be able to detach the
original storage
domain properly.

Nir
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Re: [ovirt-users] 3.6 : iSCSI LUN not detected

[Alexis HAUSER]

> Hi Alexis

> Were you able to resolve your storage LUN issue?

> Regards,


> Kevin


I am trying the suggested solution on this post by Nir Soffer : reconnect the 
storage to the older hypervisor and detach it correctly...But it doesn't work :

>From the DC :
1. I set the storage (which is master data domain) to maintenance mode
2. I try to detach it. I get this error message :

 "Error while executing action: Cannot remove the master Storage Domain from 
the Data Center without another active Storage Domain to take its place.
-Either activate another Storage Domain in the Data Center, or remove the Data 
Center.

3. If I go in the storage domain menu, I get only the "destroy option", not 
"remove", which is maybe not what I want. I'd like to be able to keep the data 
on it.
4. If I try to remove the datacenter as suggested in the error message I get 
this error (as the hosted-engine storage is still up) :

"Error while executing action: Cannot remove Data Center which contains 
active/locked Storage Domains.
-Please deactivate all domains and wait for tasks to finish before removing the 
Data Center."

5. I can't set the hosted engine storage to maintenance

What should I do ?
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Re: [ovirt-users] 3.6 : iSCSI LUN not detected

[Kevin Goldblatt]

Hi Alexis

Were you able to resolve your storage LUN issue?

Regards,


Kevin

On Wed, Aug 10, 2016 at 11:38 AM, Alexis HAUSER <
alexis.hau...@telecom-bretagne.eu> wrote:

> Hi,
>
> I am reinstalling a new Node with a new hosted-engine and I would like to
> import an iSCSI storage from a previous ovirt installation.
> However, I can see all LUN present on that iSCSI but the one I want... I
> checked from the iSCSI array and this disk still exists, it's just not
> detected from Ovirt (3.6)...
> I tried to make a new data domain and chosed that same iSCSI and it's also
> not detected.
>
> Any ideas ?
>
> I didn't remove the storage from the Engine interface on the previous
> installation, just just turned off all VMs accessing the iSCSI and
> unplugged the cable. Is it possible there is still a lock file or something
> from the previous hypervisor ?
>
>
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Re: [ovirt-users] 3.6 : iSCSI LUN not detected

[Alexis HAUSER]

> Did you deployed the engine from scratch or did your restored there a backup?

From scratch

> In 3.5 we were registering an hosted-engine iSCSI storage domain as a
> (fake) direct LUN into the engine to prevent any misuse.

I have this problem for a data domain but not for the hosted_storage :)


- Mail original -
De: "Simone Tiraboschi" <stira...@redhat.com>
À: "Alexis HAUSER" <alexis.hau...@telecom-bretagne.eu>
Cc: "users" <users@ovirt.org>
Envoyé: Mercredi 10 Août 2016 11:37:15
Objet: Re: [ovirt-users] 3.6 : iSCSI LUN not detected

On Wed, Aug 10, 2016 at 10:38 AM, Alexis HAUSER
<alexis.hau...@telecom-bretagne.eu> wrote:
> Hi,
>
> I am reinstalling a new Node with a new hosted-engine and I would like to 
> import an iSCSI storage from a previous ovirt installation.
> However, I can see all LUN present on that iSCSI but the one I want... I 
> checked from the iSCSI array and this disk still exists, it's just not 
> detected from Ovirt (3.6)...
> I tried to make a new data domain and chosed that same iSCSI and it's also 
> not detected.
>
> Any ideas ?

Did you deployed the engine from scratch or did your restored there a backup?
In 3.5 we were registering an hosted-engine iSCSI storage domain as a
(fake) direct LUN into the engine to prevent any misuse.

> I didn't remove the storage from the Engine interface on the previous 
> installation, just just turned off all VMs accessing the iSCSI and unplugged 
> the cable. Is it possible there is still a lock file or something from the 
> previous hypervisor ?
>
>
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Re: [ovirt-users] 3.6 : iSCSI LUN not detected

[Nir Soffer]

On Wed, Aug 10, 2016 at 11:38 AM, Alexis HAUSER
 wrote:
> Hi,
>
> I am reinstalling a new Node with a new hosted-engine and I would like to 
> import an iSCSI storage from a previous ovirt installation.
> However, I can see all LUN present on that iSCSI but the one I want... I 
> checked from the iSCSI array and this disk still exists, it's just not 
> detected from Ovirt (3.6)...
> I tried to make a new data domain and chosed that same iSCSI and it's also 
> not detected.

You should see the lun in engine if you are logged in to the iscsi target.

Are you sure this lun is configured properly so the new host can access it?

Do you have correct /etc/iscsi/initiatorname.iscsi on the host?

> I didn't remove the storage from the Engine interface on the previous 
> installation, just just turned off all VMs accessing the iSCSI and unplugged 
> the cable.

This is not a good idea, not sure that it is related to your problem,
but what you should do is:

1. Shutdown vms using this storage domain
2. Put storage domain to maintenance
3. Detach storage domain
4. Import storage domain on the other setup - this will work only
after you see the lun on the other setup

Nir
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Re: [ovirt-users] 3.6 : iSCSI LUN not detected

[Simone Tiraboschi]

On Wed, Aug 10, 2016 at 10:38 AM, Alexis HAUSER
 wrote:
> Hi,
>
> I am reinstalling a new Node with a new hosted-engine and I would like to 
> import an iSCSI storage from a previous ovirt installation.
> However, I can see all LUN present on that iSCSI but the one I want... I 
> checked from the iSCSI array and this disk still exists, it's just not 
> detected from Ovirt (3.6)...
> I tried to make a new data domain and chosed that same iSCSI and it's also 
> not detected.
>
> Any ideas ?

Did you deployed the engine from scratch or did your restored there a backup?
In 3.5 we were registering an hosted-engine iSCSI storage domain as a
(fake) direct LUN into the engine to prevent any misuse.

> I didn't remove the storage from the Engine interface on the previous 
> installation, just just turned off all VMs accessing the iSCSI and unplugged 
> the cable. Is it possible there is still a lock file or something from the 
> previous hypervisor ?
>
>
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[ovirt-users] 3.6 : iSCSI LUN not detected

[Alexis HAUSER]

Hi,

I am reinstalling a new Node with a new hosted-engine and I would like to 
import an iSCSI storage from a previous ovirt installation.
However, I can see all LUN present on that iSCSI but the one I want... I 
checked from the iSCSI array and this disk still exists, it's just not detected 
from Ovirt (3.6)...
I tried to make a new data domain and chosed that same iSCSI and it's also not 
detected.

Any ideas ?

I didn't remove the storage from the Engine interface on the previous 
installation, just just turned off all VMs accessing the iSCSI and unplugged 
the cable. Is it possible there is still a lock file or something from the 
previous hypervisor ?


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