Re: [ovirt-users] iSCSI Discovery cannot detetect LUN

On Fri, Mar 31, 2017 at 3:43 PM, Lukáš Kaplan <lkaplan(a)dragon.cz&gt; wrote: > I solved this issue now. > > I thought till today, that iSCSI LUN ID (WWN or WWID) is globaly unique. > It is not true! > If you power on two identical linux machines and create iSCSI target on > them, their LUN IDs will be same... > > 360000000000000000e00000000010001 - for first LUN > 360000000000000000e00000000010002 - for second LUN etc > How did you get to such a number with so many zero's? Usually, there's some vendor ID and so on there... What target are you using? Y. > > You have to change LUN ID manualy (and take care of that uniqueness in > your domain) in /etc/tgtd/targets.conf for example: > > <target iqn.2017-03.com.example.domain> > <backing-store /dev/md124> > scsi_id 00020001 > </backing-store> > <backing-store /dev/md125> > scsi_id 00020002 > </backing-store> > initiator-address 192.168.1.0/24 > </target> > > > > -- > Lukas Kaplan > > > > 2017-03-31 9:06 GMT+02:00 Lukáš Kaplan <lkaplan(a)dragon.cz&gt;: > >> Is it possible that problem can be in conflicting LUN IDs? >> I see that first LUN from both storage servers have same LUN ID >> 360000000000000000e00000000010001. One storage server is connected to >> ovirt and second is not connected because of described problem (ovirt dont >> show lun after login and discovery). >> >> I am using tgtd as iscsi target server on both servers. Both have same >> configuration (same disks, md raid6), but different iqn and ip address... >> >> -- >> Lukas Kaplan >> >> Dragon Internet a.s. >> > > >> 2017-03-29 12:12 GMT+02:00 Liron Aravot <laravot(a)redhat.com&gt;: >> >>> >>> >>> On Wed, Mar 29, 2017 at 12:59 PM, Eduardo Mayoral <emayoral(a)arsys.es&gt; >>> wrote: >>> >>>> I had a similar problem, in my case this was related to multipath, it >>>> was not masking the LUNs correctly, it was seeing it multiple times (one >>>> per path), and I could not select the LUNs in the oVirt interface. >>>> >>>> Once I configured multipath correctly, everything worked like a charm. >>>> >>>> Best regards, >>>> >>>> -- >>>> >>>> Eduardo Mayoral. >>>> >>>> On 29/03/17 11:30, Lukáš Kaplan wrote: >>>> >>>> Hello all, >>>> >>>> I did all steps as I described in previous email, but no change. I >>>> can't see any LUN after discovery and login of new iSCSI storage. >>>> (That storage is ok, if I try to connect it to another and older ovirt >>>> domain, it is working...) >>>> >>>> I tryed it on 3 new iSCSI targets alredy, all have same problem... >>>> >>>> Can somebody help me, please? >>>> >>>> -- >>>> Lukas Kaplan >>>> >>>> >>> Hi Lukas, >>> If you try to perform the discovery yourself, do you see the luns? >>> >>>> >>>> >>>> 2017-03-27 16:22 GMT+02:00 Lukáš Kaplan <lkaplan(a)dragon.cz&gt;: >>>> >>>>> I did following steps: >>>>> >>>>> - delete target on all initiators (ovirt nodes) >>>>> iscsiadm -m node -T iqn.2017-03.cz.dragon.ovirt.fuvs-sn1:10T -p >>>>> 10.53.1.201:3260 -u >>>>> iscsiadm -m node -T iqn.2017-03.cz.dragon.ovirt.fuvs-sn1:10T -p >>>>> 10.53.1.201:3260 -o delete >>>>> >>>>> - stop tgtd on target >>>>> - fill storage by zeroes (dd if=/dev/zero of=/dev/md125 bs=4096 >>>>> status=progress) >>>>> - start tgtd >>>>> - tried to connect to ovirt (Discovery=ok, Login=ok, but can not see >>>>> any LUN). >>>>> >>>>> === After that I ran this commands on one node: === >>>>> >>>>> [root@fudi-cn1 ~]# iscsiadm -m session -o show >>>>> tcp: [1] 10.53.0.10:3260,1 iqn.2017-03.cz.dragon.ovirt:ovirtengine >>>>> (non-flash) >>>>> tcp: [11] 10.53.0.201:3260,1 iqn.2017-03.cz.dragon.ovirt.fudi-sn1:10T >>>>> (non-flash) >>>>> tcp: [12] 10.53.1.201:3260,1 iqn.2017-03.cz.dragon.ovirt.fuvs-sn1:10T >>>>> (non-flash) >>>>> >>>>> [root@fudi-cn1 ~]# iscsiadm -m discoverydb -P1 >>>>> SENDTARGETS: >>>>> DiscoveryAddress: 10.53.0.201,3260 >>>>> Target: iqn.2017-03.cz.dragon.ovirt:ovirtengine >>>>> Portal: 10.53.0.201:3260,1 >>>>> Iface Name: default >>>>> iSNS: >>>>> No targets found. >>>>> STATIC: >>>>> Target: iqn.2017-03.cz.dragon.ovirt.fuvs-sn1:10T >>>>> Portal: 10.53.1.201:3260,1 >>>>> Iface Name: default >>>>> Target: iqn.2017-03.cz.dragon.ovirt:ovirtengine >>>>> Portal: 10.53.0.10:3260,1 >>>>> Iface Name: default >>>>> Target: iqn.2017-03.cz.dragon.ovirt.fudi-sn1:10T >>>>> Portal: 10.53.0.201:3260,1 >>>>> Iface Name: default >>>>> FIRMWARE: >>>>> No targets found. >>>>> >>>>> === On iscsi target: === >>>>> [root@fuvs-sn1 ~]# cat /proc/mdstat >>>>> Personalities : [raid1] [raid6] [raid5] [raid4] >>>>> md125 : active raid6 sdl1[11] sdk1[10] sdj1[9] sdi1[8] sdh1[7] >>>>> sdg1[6] sdf1[5] sde1[4] sdd1[3] sdc1[2] sdb1[1] sda1[0] >>>>> 9766302720 blocks super 1.2 level 6, 512k chunk, algorithm 2 >>>>> [12/12] [UUUUUUUUUUUU] >>>>> bitmap: 0/8 pages [0KB], 65536KB chunk >>>>> ...etc... >>>>> >>>>> >>>>> [root@fuvs-sn1 ~]# cat /etc/tgt/targets.conf >>>>> default-driver iscsi >>>>> >>>>> <target iqn.2017-03.cz.dragon.ovirt.fuvs-sn1:10T> >>>>> # provided devicce as a iSCSI target >>>>> backing-store /dev/md125 >>>>> # iSCSI Initiator's IP address you allow to connect >>>>> #initiator-address 10.53.0.0/23 >>>>> </target> >>>>> >>>>> -- >>>>> Lukas Kaplan >>>>> >>>>> 2017-03-25 12:36 GMT+01:00 Lukas Kaplan <lkaplan(a)dragon.cz&gt;: >>>>> >>>>>> Co muze myslet tim mappingem? >>>>>> >>>>>> Jinak muzu zkusit ddckem celou storage prepsat nulami. >>>>>> >>>>>> co ty na to? >>>>>> >>>>>> Odesláno z iPhonu >>>>>> >>>>>> Začátek přeposílané zprávy: >>>>>> >>>>>> *Od:* Yaniv Kaul <ykaul(a)redhat.com&gt; >>>>>> *Datum:* 24. března 2017 23:25:21 SEČ >>>>>> *Komu:* Lukáš Kaplan <lkaplan(a)dragon.cz&gt; >>>>>> *Kopie:* users <users(a)ovirt.org&gt; >>>>>> *Předmět:* *Re: [ovirt-users] iSCSI Discovery cannot detetect LUN* >>>>>> >>>>>> >>>>>> >>>>>> On Fri, Mar 24, 2017 at 1:34 PM, Lukáš Kaplan <lkaplan(a)dragon.cz&gt; >>>>>> wrote: >>>>>> >>>>>>> Hello all, >>>>>>> >>>>>>> please do you have some experience with troubleshooting adding of >>>>>>> iSCSI domain to ovirt 4.1.1? >>>>>>> >>>>>>> I am chalenging this issue now: >>>>>>> >>>>>>> 1) I have successfuly installed oVirt 4.1.1 environment with >>>>>>> self-hosted engine, 3 nodes and 3 storages (iSCSI Master domain, iSCSI for >>>>>>> hosted engine and NFS ISO domain). Everything is working now. >>>>>>> >>>>>>> 2) But, when I want to add new iSCSI domain, I can discover it, I >>>>>>> can login, but I cant see any LUN on that storage. (I had same problem in >>>>>>> oVirt 4.1.0, so I made upgrade to 4.1.1) >>>>>>> >>>>>> >>>>>> Are you sure mappings are correct? >>>>>> Can you ensure the LUN is empty? >>>>>> Y. >>>>>> >>>>>> >>>>>>> >>>>>>> 3) Then I tryed to add this storage to another oVirt environment >>>>>>> (oVirt 3.6) and there are no problem. I can see LUN on that storage and I >>>>>>> can connect it to oVirt. >>>>>>> >>>>>>> I tryed to examine vdsm.log, but it is very detailed and unredable >>>>>>> for me :-/ >>>>>>> >>>>>>> Thak you in advance, have a nice day, >>>>>>> -- >>>>>>> Lukas Kaplan >>>>>>> >>>>>>> >>>>>>> >>>>>>> _______________________________________________ >>>>>>> Users mailing list >>>>>>> Users(a)ovirt.org >>>>>>> http://lists.ovirt.org/mailman/listinfo/users >>>>>>> >>>>>>> >>>>>> >>>>> >>>> >>>> >>>> _______________________________________________ >>>> Users mailing listUsers@ovirt.orghttp://lists.ovirt.org/mailman/listinfo/users >>>> >>>> >>>> >>>> _______________________________________________ >>>> Users mailing list >>>> Users(a)ovirt.org >>>> http://lists.ovirt.org/mailman/listinfo/users >>>> >>>> >>> >> > > _______________________________________________ > Users mailing list > Users(a)ovirt.org > http://lists.ovirt.org/mailman/listinfo/users > >