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

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