[ovirt-devel] adding new paths to iscsi data storage domains

[Nir Soffer]

Adding Elad who tested this feature lately to add more info.

----- Original Message -----
> From: "Paul Dyer" <pmdyermms at gmail.com>
> To: "Nir Soffer" <nsoffer at redhat.com>
> Cc: devel at ovirt.org
> Sent: Friday, March 13, 2015 6:25:05 PM
> Subject: Re: [ovirt-devel] adding new paths to iscsi data storage domains
> 
> Nir,
> 
> we have added 2 more nics to each virtualization host.    In order to get
> this working, I had to add an after_network_setup hook.   The shell script
> simply does "/sbin/iscsiadm  -m node -L all", to get the extra targets
> login after reboot.
> 
> I looked in the engine table storage_server_connections and found that only
> the iscsi targets selected during the original storage domain create were
> present.   If ovirt-engine added rows here, then most of the work would
> have been done.
> 
> I say mostly, because the Dell MD3200i did not return exactly the correct
> portal target values.   The device has 2 controllers, with 4 nics each.
> Controller 0, ports 0,1,2,3 uses portal target 1.    Controller 1, the
> ports uses portal target 2.   After iscsiadm discovery, the portal targets
> for ports 1,2,3 were all 1.    Ports 0 had targets 1 and 2, correctly.    I
> adjusted the values saved on the filesystem, and login/logoff works fine.
> 
> Paul
> 
> 
> 
> On Fri, Feb 6, 2015 at 11:57 AM, Paul Dyer <pmdyermms at gmail.com> wrote:
> 
> > First of all, thank you for your time.   I must apologize that in this
> > install, I am using RHEV 3.4.5.    I will try to reproduce this on an ovirt
> > install.   I just need to create some paths to iscsi targets.
> >
> > 1.   This configuration has 2 physical hosts, Dell PE-R715 servers, with a
> > Dell PowerVault MD3200i iSCSI data storage domain.   The EM3 nic was the
> > original link.   EM4 was the new connection to storage.
> >
> > 2.   From the manager interface, I selected Storage tab, then the
> > kvm5DataDomain, then edit.   From the popup, I added the IP address under
> > Discovery Targets, then clicked the Discover button.    Then, clicked the
> > login arrow on the new targets discovered.
> >
> > I have attached the engine and vdsm logs.   I was working on this at about
> > 11:40am Feb 4th.
> >
> > When setting the host in maintenance mode, then reboot, and Activate, the
> > new paths do not get a login.
> >
> > Thanks,
> > Paul
> >
> >
> >
> > On Fri, Feb 6, 2015 at 5:38 AM, Nir Soffer <nsoffer at redhat.com> wrote:
> >
> >> ----- Original Message -----
> >> > From: "Paul Dyer" <pmdyermms at gmail.com>
> >> > To: devel at ovirt.org
> >> > Sent: Friday, February 6, 2015 12:20:23 AM
> >> > Subject: [ovirt-devel] adding new paths to iscsi data storage domains
> >> >
> >> > Hi,
> >> >
> >> > I have been reading the devel list for months now, and would like to
> >> ask a
> >> > question.
> >> >
> >> > In version 3.4.5, adding new paths to an existing iSCSI data storage
> >> domain
> >> > does not work from the manager.
> >>
> >> It works on ovirt 3.5 and master and it should work also in all previous
> >> versions.
> >>
> >> Please open a bug for this:
> >> 1. Describe the configuration you are modifying
> >> 2. Describe the steps you take
> >> 3. Include engine log
> >> 4. Include vdsm log from the host trying to add new devices
> >>
> >> > I have been able to add the paths with
> >> > command line "iscsiadm -m discovery -t st" and "iscsiadm -m node -L
> >> all".
> >> >
> >> > Is there any plan to allow for adding new storage paths after the data
> >> domain
> >> > has been created?
> >> >
> >> > Thanks,
> >> > Paul
> >> >
> >> >
> >> > --
> >> > Paul Dyer,
> >> > Mercury Consulting Group, RHCE
> >> > 504-302-8750
> >> >
> >> > _______________________________________________
> >> > Devel mailing list
> >> > Devel at ovirt.org
> >> > http://lists.ovirt.org/mailman/listinfo/devel
> >>
> >
> >
> >
> > --
> > Paul Dyer,
> > Mercury Consulting Group, RHCE
> > 504-302-8750
> >
> 
> 
> 
> --
> Paul Dyer,
> Mercury Consulting Group, RHCE
> 504-302-8750
>