Thank you very much for this precision. Things seems to work fine now !
Le vendredi 24 octobre 2014, 14:53:54 Mike Christie a écrit : > 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-chaptes > > t-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-chaptes > > t-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-chaptes > > t-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-chaptes > > t-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 <[email protected] > > > > <mailto:[email protected]>> 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-or > > ig, > > > > > 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 > > > > <[email protected] <mailto:[email protected]>> > > > > > wrote: > > > > On Oct 22, 2014, at 12:39 PM, Laurent HENRY > > > > <[email protected] <mailto:[email protected]>> > > > > > > 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 > > > > > > > > -- > > > > You received this message because you are subscribed to the > > > > Google Groups > > > > > > "open-iscsi" group. > > > > To unsubscribe from this group and stop receiving emails from > > > > it, send an > > > > > > email to [email protected] > > > > <mailto:open-iscsi%[email protected]>. > > > > > > To post to this group, send email to [email protected] > > > > <mailto:[email protected]>. > > > > > > Visit this group at http://groups.google.com/group/open-iscsi. > > > > For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups "open-iscsi" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/open-iscsi. For more options, visit https://groups.google.com/d/optout.
