The "(multiple)" string/code was added by a equallogic engineer. It just
means that iscsid is going to allow multiple sessions to the same target
portal if requested.

Some multipath/failover tools will basically create a secondary session
to the same target portal dynamically. We used to not allow that if it
was using the same iface.



On 10/23/2014 04:55 PM, Donald Williams wrote:
> Bonjour, 
> 
>  I'm not sure why it's saying (multiple).  But you notice it does that
> on each separate login session.  Possibly Mike Christie will chime in
> with an answer.   It isn't anything I would worry about. 
> 
> Run this to see the existing sessions.
>  
> #iscsiadm -m session 
> 
> e.g.  My environment is using MPIO and IPv4/IPv6 at same time.   You
> should just see one entry per EQL volume. 
> 
> tcp: [1] [2001:db8:00:00:10:126:204:10]:3260,1
> iqn.2001-05.com.equallogic:4-52aed6-a813e0689-e2f004a89e651b0e-linux-iscsi-test-vol0
> (non-flash)
> tcp: [10] [2001:db8:00:00:10:126:204:10]:3260,1
> iqn.2001-05.com.equallogic:4-52aed6-a813e0689-e2f004a89e651b0e-linux-iscsi-test-vol0
> (non-flash)
> tcp: [2] 10.126.204.10:3260 <http://10.126.204.10:3260>,1
> iqn.2001-05.com.equallogic:4-52aed6-a813e0689-e2f004a89e651b0e-linux-iscsi-test-vol0
> (non-flash)
> tcp: [3] 10.126.204.10:3260 <http://10.126.204.10:3260>,1
> iqn.2001-05.com.equallogic:4-52aed6-a813e0689-e2f004a89e651b0e-linux-iscsi-test-vol0
> (non-flash)
> tcp: [4] 10.126.204.10:3260 <http://10.126.204.10:3260>,1
> iqn.2001-05.com.equallogic:0-1cb196-c2c0def3d-7a613a8fd9d53da8-ois-chaptest-vol
> (non-flash)
> tcp: [5] 10.126.204.10:3260 <http://10.126.204.10:3260>,1
> iqn.2001-05.com.equallogic:0-1cb196-c2c0def3d-7a613a8fd9d53da8-ois-chaptest-vol
> (non-flash)
> tcp: [6] 10.126.205.110:3260 <http://10.126.205.110:3260>,1
> iqn.2001-05.com.equallogic:0-af1ff6-03b521dd7-b550051e2d854404-rhelv6-mpio-test-dw-vol
> (non-flash)
> tcp: [7] 10.126.205.110:3260 <http://10.126.205.110:3260>,1
> iqn.2001-05.com.equallogic:0-af1ff6-03b521dd7-b550051e2d854404-rhelv6-mpio-test-dw-vol
> (non-flash)
> tcp: [8] 10.126.202.240:3260 <http://10.126.202.240:3260>,1
> iqn.2001-05.com.equallogic:4-52aed6-08a90c064-074004f1fb153daa-ois-chaptest-vol-dw
> (non-flash)
> tcp: [9] 10.126.202.240:3260 <http://10.126.202.240:3260>,1
> iqn.2001-05.com.equallogic:4-52aed6-08a90c064-074004f1fb153daa-ois-chaptest-vol-dw
> (non-flash)
> 
> And for more detail: 
> 
> #iscsiadm -m session -P 1
> 
> 
>  Out of curiosity, why don't you want to use MPIO, possibly getting
> better performance and get redundancy as well? 
> 
>  Cordialement 
> 
>  Don 
>  
> 
> On Thu, Oct 23, 2014 at 5:46 AM, Laurent HENRY <laurent.he...@ehess.fr
> <mailto:laurent.he...@ehess.fr>> wrote:
> 
>     Thank you both Donald and Paul.
> 
>     That's it, i have 2 "ifaces" in my isci/ifaces:
>     libvirt-iface-08bf216d
>     libvirt-iface-33d9c275
> 
>     I don't know how they appear there.
>     deleting them and all my nodes config and rebooting, i am getting
>     just one new:
>     libvirt-iface-3e97ef13
> 
>     discory seems to work fine now.
>     login mount the resource just once, but i still see something about
>     "multiple"
>     mentionned while loggin in (see bellow)
> 
>     #iscsiadm -m node -T
>     iqn.2001-05.com.equallogic:4-52aed6-65a51e6aa-5157080d44c5447a-slash -p
>     192.168.99.55:3260 <http://192.168.99.55:3260> --login
> 
>     Logging in to [iface: libvirt-iface-3e97ef13, target:
>     iqn.2001-05.com.equallogic:4-52aed6-65a51e6aa-5157080d44c5447a-slash, 
> portal:
>     192.168.99.55,3260] (multiple)
> 
>     Login to [iface: libvirt-iface-3e97ef13, target:
>     iqn.2001-05.com.equallogic:4-52aed6-65a51e6aa-5157080d44c5447a-slash, 
> portal:
>     192.168.99.55,3260] successful.
> 
> 
>     Le mercredi 22 octobre 2014, 13:01:30 Donald Williams a écrit :
>     > Hello,
>     >
>     >  The issue isn't on the Equallogic side, you have "Interface" AKA 
> "IFACE"
>     > files, configured in open-iscsi.   This does discovery out each defined
>     > physical interface and logins as well.
>     >
>     > They are located in the open-iscsi directory in the "iface" 
> subdirectory.
>     >
>     > Logging in to [*iface: libvirt-iface-33d9c275*, target:
>     > 
> iqn.2001-05.com.equallogic:4-52aed6-a9251e6aa-f437080d41b5434f-13-1-orig,
>     > portal: 192.168.99.55,3260] (multiple)
>     >
>     > Logging in to *[iface: libvirt-iface-08bf216d*, target:
>     >
>     iqn.2001-05.com.equallogic:4-52aed6-a9251e6aa-f437080d41b5434f-13-1-orig,
>     > portal: 192.168.99.55,3260] (multiple)
>     >
>     >  If you have multipathd installed it will create an MPIO device
>     allowing
>     > you to use multiple paths to reach the SAN, providing better
>     performance
>     > and redundancy  Typically /dev/mapper/mpath0  /dev/mapper/mpath1,
>     etc...
>     >
>     >  This Tech Report covers how to configure MPIO for RedHat.   The basic
>     > process is the same for SuSE.   Files might be located in different
>     > directories.
>     >
>     >
>     
> http://en.community.dell.com/cfs-filesystemfile/__key/communityserver-compon
>     >
>     ents-postattachments/00-19-86-14-22/TR1062_2D00_LinuxDeploy_2D00_v1-2.pdf
>     >
>     >
>     >  Regards,
>     >
>     >  Don
>     >
>     >
>     >
>     > On Wed, Oct 22, 2014 at 12:49 PM, Paul Koning
>     <paulkon...@comcast.net <mailto:paulkon...@comcast.net>>
>     >
>     > wrote:
>     > > On Oct 22, 2014, at 12:39 PM, Laurent HENRY
>     <laurent.he...@ehess.fr <mailto:laurent.he...@ehess.fr>>
>     > >
>     > > wrote:
>     > > > Hello,
>     > > >
>     > > >      I am noticing a strange behavior with one of my Linux server
>     > >
>     > > (Opensuse
>     > >
>     > > > 13.1 with open-iscsi)
>     > > >
>     > > > While connecting manually to a iscsi node, my lun is getting
>     mounted
>     > >
>     > > twice.
>     > >
>     > > > This produce troubles on my iscsi disk array, which refuse a
>     multihost
>     > >
>     > > request
>     > >
>     > > > (and i don't want to allow it either).
>     > > >
>     > > > I think the reason is my disk array (dell equallogic) announce
>     every lun
>     > > > twice, i don't know why.
>     > >
>     > > That would certainly be unexpected, if it is really doing that.
>     > >
>     > > > Here is an example:
>     > > >
>     > > > # iscsiadm -m discovery -t sendtargets -p 192.168.99.55|grep
>     13.1-orig
>     > > >
>     > > > 192.168.99.55:3260 <http://192.168.99.55:3260>,1
>     iqn.2001-05.com.equallogic:4-52aed6-a9251e6aa-
>     > > > f437080d41b5434f-13-1-orig
>     > > > 192.168.99.55:3260 <http://192.168.99.55:3260>,1
>     iqn.2001-05.com.equallogic:4-52aed6-a9251e6aa-
>     > > > f437080d41b5434f-13-1-orig
>     > >
>     > > That means either it was announced twice, or it was announced
>     once but the
>     > > Linux end turned it into two records.  To determine which is
>     correct, you
>     > > might use Wireshark or equivalent to capture the iSCSI discovery
>     session.
>     > > I expect you'll see the target announced once; if so then the
>     issue is at
>     > > the initiator end.  If you do see the target announced twice,
>     that would
>     > > be
>     > > something to investigate more in detail because the system isn't
>     supposed
>     > > to do that.
>     > >
>     > >         paul
>     > >
>     > > --
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