--_7e02baf6-8c8d-4620-8b46-c1ba13791b29_ Content-Type: multipart/alternative; boundary="_e809d2e5-0b80-4b2a-8403-1a83cdc445c0_" --_e809d2e5-0b80-4b2a-8403-1a83cdc445c0_ Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable I have a specific interface set up for migrations. Why do disk migrations n= ot use the interface that I have set for migrations? Is that by design? Sho= uldnt it use the interfaces that I have set aside for migrations? VM migrat= ions work as they should but not disk migrations =20 =20 = --_e809d2e5-0b80-4b2a-8403-1a83cdc445c0_ Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable <html> <head> <style><!-- .hmmessage P { margin:0px=3B padding:0px } body.hmmessage { font-size: 12pt=3B font-family:Calibri } --></style></head> <body class=3D'hmmessage'><div dir=3D'ltr'>I have a specific interface set = up for migrations. Why do disk migrations not use the interface that I have= set for migrations? Is that by design? Shouldnt it use the interfaces that= I have set aside for migrations? VM migrations work as they should but not= disk migrations<div style=3D"display: inline-block" id=3D"inlineImage0"><!= --tmpl() _48--><span contenteditable=3D"true"> =3B</span><div style=3D"= display: inline-block" contenteditable=3D"false" class=3D"inlineImage" init= height=3D"135" initwidth=3D"1244"><img src=3D"cid:inlineImage0" height=3D"1= 35" width=3D"1244"></div><span contenteditable=3D"true"> =3B</span></di= v><div><br></div><div><div style=3D"display: inline-block" id=3D"inlineImag= e1"><!--tmpl() _48--><span contenteditable=3D"true"> =3B</span><div sty= le=3D"display: inline-block" contenteditable=3D"false" class=3D"inlineImage= " initheight=3D"329" initwidth=3D"595"><img src=3D"cid:inlineImage1" height= =3D"329" width=3D"595"></div><span contenteditable=3D"true"> =3B</span>= <!--/tmpl--></div><br><div style=3D"display: inline-block"><!--/tmpl--></di= v><div><br></div><div><br></div><div><br></div></div> </div></bo= dy> </html>= --_e809d2e5-0b80-4b2a-8403-1a83cdc445c0_-- 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I don't think that you can configure interface for disk migration. Disk migration is actually copy of information from the original disk to a new disk created on a new domain + delete of the original disk once that is done. it's not actually a migration and so I am not sure you can actually configure an interface for that. adding ofer - perhpas he has a solution or it's possible and I am not aware of it. Dafna On 02/26/2014 05:24 PM, Maurice James wrote:
I have a specific interface set up for migrations. Why do disk migrations not use the interface that I have set for migrations? Is that by design? Shouldnt it use the interfaces that I have set aside for migrations? VM migrations work as they should but not disk migrations
_______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
-- Dafna Ron
IIUC, since disk migrations are, as Dafna said, essentially a storage operation, the 'vm migration network' interface is not used for it. However, if the storage is iSCSI, on 3.4 you can set up 'iSCSI Bond' interfaces and define which interface is used to access which target. This would essentially allow you to create a bond that is used to access only the storage, and disk migrations should use that. Gadi Ickowicz ----- Original Message ----- From: "Dafna Ron" <dron@redhat.com> To: "Maurice James" <midnightsteel@msn.com> Cc: "Ofer Blaut" <oblaut@redhat.com>, users@ovirt.org Sent: Wednesday, February 26, 2014 7:34:11 PM Subject: Re: [Users] Disk Migration I don't think that you can configure interface for disk migration. Disk migration is actually copy of information from the original disk to a new disk created on a new domain + delete of the original disk once that is done. it's not actually a migration and so I am not sure you can actually configure an interface for that. adding ofer - perhpas he has a solution or it's possible and I am not aware of it. Dafna On 02/26/2014 05:24 PM, Maurice James wrote:
I have a specific interface set up for migrations. Why do disk migrations not use the interface that I have set for migrations? Is that by design? Shouldnt it use the interfaces that I have set aside for migrations? VM migrations work as they should but not disk migrations
_______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
-- Dafna Ron _______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
----- Original Message -----
From: "Dafna Ron" <dron@redhat.com> To: "Maurice James" <midnightsteel@msn.com> Cc: "Ofer Blaut" <oblaut@redhat.com>, users@ovirt.org Sent: Wednesday, February 26, 2014 7:34:11 PM Subject: Re: [Users] Disk Migration
On 02/26/2014 05:24 PM, Maurice James wrote:
I have a specific interface set up for migrations. Why do disk migrations not use the interface that I have set for migrations? Is that by design? Shouldnt it use the interfaces that I have set aside for migrations? VM migrations work as they should but not disk migrations
I don't think that you can configure interface for disk migration. Disk migration is actually copy of information from the original disk to a new disk created on a new domain + delete of the original disk once that is done. it's not actually a migration and so I am not sure you can actually configure an interface for that. adding ofer - perhpas he has a solution or it's possible and I am not aware of it.
I guess that *not* using the migration network for storage operation is the expected behavior, to make migration faster and safer. Michal, Dan, can you elaborate on this? Nir
On Feb 27, 2014, at 08:15 , Nir Soffer <nsoffer@redhat.com> wrote:
----- Original Message -----
From: "Dafna Ron" <dron@redhat.com> To: "Maurice James" <midnightsteel@msn.com> Cc: "Ofer Blaut" <oblaut@redhat.com>, users@ovirt.org Sent: Wednesday, February 26, 2014 7:34:11 PM Subject: Re: [Users] Disk Migration
On 02/26/2014 05:24 PM, Maurice James wrote:
I have a specific interface set up for migrations. Why do disk migrations not use the interface that I have set for migrations? Is that by design? Shouldnt it use the interfaces that I have set aside for migrations? VM migrations work as they should but not disk migrations
I don't think that you can configure interface for disk migration. Disk migration is actually copy of information from the original disk to a new disk created on a new domain + delete of the original disk once that is done. it's not actually a migration and so I am not sure you can actually configure an interface for that. adding ofer - perhpas he has a solution or it's possible and I am not aware of it.
I guess that *not* using the migration network for storage operation is the expected behavior, to make migration faster and safer.
Michal, Dan, can you elaborate on this?
with storage offloading it's probably not going to be significant, however today it likely is. Nir, why would not using migration network make it better? Won't we have the same problem as before without migration network at all, i.e. choking the management channel? Should we maybe consider a dedicated "storage" network? Thanks, michal
Nir
That sounds like a good idea. That is exactly what happens in my setup. Whenever I move a disk it chokes out the management network -----Original Message----- From: Michal Skrivanek [mailto:mskrivan@redhat.com] Sent: Thursday, February 27, 2014 3:12 AM To: Nir Soffer Cc: dron@redhat.com; Dan Kenigsberg; Maurice James; Ofer Blaut; Users@ovirt.org Users Subject: Re: [Users] Disk Migration On Feb 27, 2014, at 08:15 , Nir Soffer <nsoffer@redhat.com> wrote:
----- Original Message -----
From: "Dafna Ron" <dron@redhat.com> To: "Maurice James" <midnightsteel@msn.com> Cc: "Ofer Blaut" <oblaut@redhat.com>, users@ovirt.org Sent: Wednesday, February 26, 2014 7:34:11 PM Subject: Re: [Users] Disk Migration
On 02/26/2014 05:24 PM, Maurice James wrote:
I have a specific interface set up for migrations. Why do disk migrations not use the interface that I have set for migrations? Is that by design? Shouldnt it use the interfaces that I have set aside for migrations? VM migrations work as they should but not disk migrations
I don't think that you can configure interface for disk migration. Disk migration is actually copy of information from the original disk to a new disk created on a new domain + delete of the original disk once that is done. it's not actually a migration and so I am not sure you can actually configure an interface for that. adding ofer - perhpas he has a solution or it's possible and I am not aware of it.
I guess that *not* using the migration network for storage operation is the expected behavior, to make migration faster and safer.
Michal, Dan, can you elaborate on this?
with storage offloading it's probably not going to be significant, however today it likely is. Nir, why would not using migration network make it better? Won't we have the same problem as before without migration network at all, i.e. choking the management channel? Should we maybe consider a dedicated "storage" network? Thanks, michal
Nir
On Thu, Feb 27, 2014 at 09:12:26AM +0100, Michal Skrivanek wrote:
On Feb 27, 2014, at 08:15 , Nir Soffer <nsoffer@redhat.com> wrote:
----- Original Message -----
From: "Dafna Ron" <dron@redhat.com> To: "Maurice James" <midnightsteel@msn.com> Cc: "Ofer Blaut" <oblaut@redhat.com>, users@ovirt.org Sent: Wednesday, February 26, 2014 7:34:11 PM Subject: Re: [Users] Disk Migration
On 02/26/2014 05:24 PM, Maurice James wrote:
I have a specific interface set up for migrations. Why do disk migrations not use the interface that I have set for migrations? Is that by design? Shouldnt it use the interfaces that I have set aside for migrations? VM migrations work as they should but not disk migrations
I don't think that you can configure interface for disk migration. Disk migration is actually copy of information from the original disk to a new disk created on a new domain + delete of the original disk once that is done. it's not actually a migration and so I am not sure you can actually configure an interface for that. adding ofer - perhpas he has a solution or it's possible and I am not aware of it.
I guess that *not* using the migration network for storage operation is the expected behavior, to make migration faster and safer.
Michal, Dan, can you elaborate on this?
with storage offloading it's probably not going to be significant, however today it likely is. Nir, why would not using migration network make it better? Won't we have the same problem as before without migration network at all, i.e. choking the management channel? Should we maybe consider a dedicated "storage" network?
As far as I understand Nir, you are saying the same thing: it's better to separate management, migration, and storage to separate networks, so that one does not choke the other. When we get host network QoS done (hopefully ovirt-3.5) we can do this quite cheaply, over vlans. Dan.
----- Original Message -----
From: "Michal Skrivanek" <mskrivan@redhat.com> To: "Nir Soffer" <nsoffer@redhat.com> Cc: dron@redhat.com, "Dan Kenigsberg" <danken@redhat.com>, "Maurice James" <midnightsteel@msn.com>, "Ofer Blaut" <oblaut@redhat.com>, "Users@ovirt.org Users" <users@ovirt.org> Sent: Thursday, February 27, 2014 10:12:26 AM Subject: Re: [Users] Disk Migration
On Feb 27, 2014, at 08:15 , Nir Soffer <nsoffer@redhat.com> wrote:
----- Original Message -----
From: "Dafna Ron" <dron@redhat.com> To: "Maurice James" <midnightsteel@msn.com> Cc: "Ofer Blaut" <oblaut@redhat.com>, users@ovirt.org Sent: Wednesday, February 26, 2014 7:34:11 PM Subject: Re: [Users] Disk Migration
On 02/26/2014 05:24 PM, Maurice James wrote:
I have a specific interface set up for migrations. Why do disk migrations not use the interface that I have set for migrations? Is that by design? Shouldnt it use the interfaces that I have set aside for migrations? VM migrations work as they should but not disk migrations
I don't think that you can configure interface for disk migration. Disk migration is actually copy of information from the original disk to a new disk created on a new domain + delete of the original disk once that is done. it's not actually a migration and so I am not sure you can actually configure an interface for that. adding ofer - perhpas he has a solution or it's possible and I am not aware of it.
I guess that *not* using the migration network for storage operation is the expected behavior, to make migration faster and safer.
Michal, Dan, can you elaborate on this?
with storage offloading it's probably not going to be significant, however today it likely is. Nir, why would not using migration network make it better? Won't we have the same problem as before without migration network at all, i.e. choking the management channel?
Gigs of data sent of the same netowrk used for migarations would make migration slower when the network is saturated.
Should we maybe consider a dedicated "storage" network?
This can be setup now in 3.4. Sergey, can you explain how this is configured now in 3.4?
On 28 Feb 2014, at 15:27, Nir Soffer wrote:
----- Original Message -----
From: "Michal Skrivanek" <mskrivan@redhat.com> To: "Nir Soffer" <nsoffer@redhat.com> Cc: dron@redhat.com, "Dan Kenigsberg" <danken@redhat.com>, "Maurice James" <midnightsteel@msn.com>, "Ofer Blaut" <oblaut@redhat.com>, "Users@ovirt.org Users" <users@ovirt.org> Sent: Thursday, February 27, 2014 10:12:26 AM Subject: Re: [Users] Disk Migration
On Feb 27, 2014, at 08:15 , Nir Soffer <nsoffer@redhat.com> wrote:
----- Original Message -----
From: "Dafna Ron" <dron@redhat.com> To: "Maurice James" <midnightsteel@msn.com> Cc: "Ofer Blaut" <oblaut@redhat.com>, users@ovirt.org Sent: Wednesday, February 26, 2014 7:34:11 PM Subject: Re: [Users] Disk Migration
On 02/26/2014 05:24 PM, Maurice James wrote:
I have a specific interface set up for migrations. Why do disk migrations not use the interface that I have set for migrations? Is that by design? Shouldnt it use the interfaces that I have set aside for migrations? VM migrations work as they should but not disk migrations
I don't think that you can configure interface for disk migration. Disk migration is actually copy of information from the original disk to a new disk created on a new domain + delete of the original disk once that is done. it's not actually a migration and so I am not sure you can actually configure an interface for that. adding ofer - perhpas he has a solution or it's possible and I am not aware of it.
I guess that *not* using the migration network for storage operation is the expected behavior, to make migration faster and safer.
Michal, Dan, can you elaborate on this?
with storage offloading it's probably not going to be significant, however today it likely is. Nir, why would not using migration network make it better? Won't we have the same problem as before without migration network at all, i.e. choking the management channel?
Gigs of data sent of the same netowrk used for migarations would make migration slower when the network is saturated.
well, you saturate one or the other…still from the functional perspective it's better to not choke the management…so either use the migration network (and the migrations will compete with disk moves) or a separate network. I'd be tempted to say that typically having too many different networks might be an overkill and difficult to set up/maintain
Should we maybe consider a dedicated "storage" network?
This can be setup now in 3.4.
Sergey, can you explain how this is configured now in 3.4?
----- Original Message -----
From: "Nir Soffer" <nsoffer@redhat.com> To: dron@redhat.com Cc: "Maurice James" <midnightsteel@msn.com>, "Ofer Blaut" <oblaut@redhat.com>, users@ovirt.org, "Michal Skrivanek" <mskrivan@redhat.com>, "Dan Kenigsberg" <danken@redhat.com> Sent: Thursday, February 27, 2014 9:15:24 AM Subject: Re: [Users] Disk Migration
----- Original Message -----
From: "Dafna Ron" <dron@redhat.com> To: "Maurice James" <midnightsteel@msn.com> Cc: "Ofer Blaut" <oblaut@redhat.com>, users@ovirt.org Sent: Wednesday, February 26, 2014 7:34:11 PM Subject: Re: [Users] Disk Migration
On 02/26/2014 05:24 PM, Maurice James wrote:
I have a specific interface set up for migrations. Why do disk migrations not use the interface that I have set for migrations? Is that by design? Shouldnt it use the interfaces that I have set aside for migrations? VM migrations work as they should but not disk migrations
I don't think that you can configure interface for disk migration. Disk migration is actually copy of information from the original disk to a new disk created on a new domain + delete of the original disk once that is done. it's not actually a migration and so I am not sure you can actually configure an interface for that. adding ofer - perhpas he has a solution or it's possible and I am not aware of it.
I guess that *not* using the migration network for storage operation is the expected behavior, to make migration faster and safer.
This seems to be the only documentation for the migration network: www.ovirt.org/Features/Migration_Network And it seems that it works as intended. Nir
participants (6)
-
Dafna Ron -
Dan Kenigsberg -
Gadi Ickowicz -
Maurice James -
Michal Skrivanek -
Nir Soffer