<div dir="ltr">I solved this issue now.<div><br></div><div>I thought till today, that iSCSI LUN ID (WWN or WWID) is globaly unique. It is not true!</div><div>If you power on two identical linux machines and create iSCSI target on them, their LUN IDs will be same...</div><div><br></div><div>360000000000000000e00000000010001 - for first LUN<br></div><div>360000000000000000e00000000010002 - for second LUN etc<br></div><div><br></div><div>You have to change LUN ID manualy (and take care of that uniqueness in your domain) in /etc/tgtd/targets.conf for example:</div><div><div><br></div><div><target iqn.2017-03.com.example.domain></div><div> <backing-store /dev/md124></div><div> scsi_id 00020001</div><div> </backing-store></div><div> <backing-store /dev/md125></div><div> scsi_id 00020002</div><div> </backing-store></div><div> initiator-address <a href="http://192.168.1.0/24">192.168.1.0/24</a><br></div><div></target></div></div><div><br></div><div><br></div><div class="gmail_extra"><br clear="all"><div><div class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div>--<br>Lukas Kaplan<br><br><br></div></div></div></div></div></div>
<br><div class="gmail_quote">2017-03-31 9:06 GMT+02:00 Lukáš Kaplan <span dir="ltr"><<a href="mailto:lkaplan@dragon.cz" target="_blank">lkaplan@dragon.cz</a>></span>:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Is it possible that problem can be in conflicting LUN IDs?<div>I see that first LUN from both storage servers have same LUN ID <wbr>360000000000000000e00000000010<wbr>001. One storage server is connected to ovirt and second is not connected because of described problem (ovirt dont show lun after login and discovery).</div><div><br></div><div>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...</div></div><div class="gmail_extra"><br clear="all"><div><div class="m_5126560417928153355gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div>--<br>Lukas Kaplan<br><br>Dragon Internet a.s.<br></div></div></div></div></div></div></div></blockquote><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div class="gmail_extra"><div><div class="m_5126560417928153355gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div></div></div></div></div></div></div><div><div class="h5"><div class="gmail_quote">2017-03-29 12:12 GMT+02:00 Liron Aravot <span dir="ltr"><<a href="mailto:laravot@redhat.com" target="_blank">laravot@redhat.com</a>></span>:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><br><div class="gmail_extra"><br><div class="gmail_quote"><span>On Wed, Mar 29, 2017 at 12:59 PM, Eduardo Mayoral <span dir="ltr"><<a href="mailto:emayoral@arsys.es" target="_blank">emayoral@arsys.es</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000">
<p>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.</p>
<p>Once I configured multipath correctly, everything worked like a
charm.</p>
<p>Best regards,</p>
<p>--</p>
<p>Eduardo Mayoral.<br>
</p><div><div class="m_5126560417928153355m_8027764606206990211h5">
<br>
<div class="m_5126560417928153355m_8027764606206990211m_-489792576559789274moz-cite-prefix">On 29/03/17 11:30, Lukáš Kaplan wrote:<br>
</div>
<blockquote type="cite">
<div dir="ltr">Hello all,
<div><br>
</div>
<div>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.</div>
<div>(That storage is ok, if I try to connect it to another and
older ovirt domain, it is working...)</div>
<div><br>
</div>
<div>I tryed it on 3 new iSCSI targets alredy, all have same
problem...</div>
<div><br>
</div>
<div>Can somebody help me, please?<br>
<div class="gmail_extra"><br clear="all">
<div>
<div class="m_5126560417928153355m_8027764606206990211m_-489792576559789274gmail_signature" data-smartmail="gmail_signature">
<div dir="ltr">
<div>
<div dir="ltr">
<div>--<br>
Lukas Kaplan<br></div></div></div></div></div></div></div></div></div></blockquote></div></div></div></blockquote><div><br></div></span><div>Hi Lukas,</div><div>If you try to perform the discovery yourself, do you see the luns?</div><div><div class="m_5126560417928153355h5"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div bgcolor="#FFFFFF" text="#000000"><div><div class="m_5126560417928153355m_8027764606206990211h5"><blockquote type="cite"><div dir="ltr"><div><div class="gmail_extra"><div><div class="m_5126560417928153355m_8027764606206990211m_-489792576559789274gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div>
<br>
</div>
</div>
</div>
</div>
</div>
</div>
<br>
<div class="gmail_quote">2017-03-27 16:22 GMT+02:00 Lukáš
Kaplan <span dir="ltr"><<a href="mailto:lkaplan@dragon.cz" target="_blank">lkaplan@dragon.cz</a>></span>:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir="ltr">I did following steps:
<div> </div>
<div> - delete target on all initiators (ovirt nodes)</div>
<div> iscsiadm -m node -T iqn.2017-03.cz.dragon.ovirt.fu<wbr>vs-sn1:10T -p
<a href="http://10.53.1.201:3260" target="_blank">10.53.1.201:3260</a>
-u</div>
<div> iscsiadm -m node -T iqn.2017-03.cz.dragon.ovirt.fu<wbr>vs-sn1:10T -p
<a href="http://10.53.1.201:3260" target="_blank">10.53.1.201:3260</a>
-o delete<br>
<div> </div>
<div> - stop tgtd on target</div>
<div> - fill storage by zeroes (dd if=/dev/zero
of=/dev/md125 bs=4096 status=progress)</div>
<div> - start tgtd</div>
<div> - tried to connect to ovirt (Discovery=ok,
Login=ok, but can not see any LUN).</div>
</div>
<div><br>
</div>
<div>=== After that I ran this commands on one node:
===</div>
<div><br>
</div>
<div>
<div>[root@fudi-cn1 ~]# iscsiadm -m session -o show</div>
<div>tcp: [1] <a href="http://10.53.0.10:3260" target="_blank">10.53.0.10:3260</a>,1
iqn.2017-03.cz.dragon.ovirt:ov<wbr>irtengine
(non-flash)</div>
<div>tcp: [11] <a href="http://10.53.0.201:3260" target="_blank">10.53.0.201:3260</a>,1
iqn.2017-03.cz.dragon.ovirt.fu<wbr>di-sn1:10T
(non-flash)</div>
<div>tcp: [12] <a href="http://10.53.1.201:3260" target="_blank">10.53.1.201:3260</a>,1
iqn.2017-03.cz.dragon.ovirt.fu<wbr>vs-sn1:10T
(non-flash)</div>
</div>
<div><br>
</div>
<div>
<div>[root@fudi-cn1 ~]# iscsiadm -m discoverydb -P1</div>
<div>SENDTARGETS:</div>
<div>DiscoveryAddress: 10.53.0.201,3260</div>
<div>Target: iqn.2017-03.cz.dragon.ovirt:ov<wbr>irtengine</div>
<div> Portal: <a href="http://10.53.0.201:3260" target="_blank">10.53.0.201:3260</a>,1</div>
<div> Iface Name: default</div>
<div>iSNS:</div>
<div>No targets found.</div>
<div>STATIC:</div>
<div>Target: iqn.2017-03.cz.dragon.ovirt.fu<wbr>vs-sn1:10T</div>
<div> Portal: <a href="http://10.53.1.201:3260" target="_blank">10.53.1.201:3260</a>,1</div>
<div> Iface Name: default</div>
<div>Target: iqn.2017-03.cz.dragon.ovirt:ov<wbr>irtengine</div>
<div> Portal: <a href="http://10.53.0.10:3260" target="_blank">10.53.0.10:3260</a>,1</div>
<div> Iface Name: default</div>
<div>Target: iqn.2017-03.cz.dragon.ovirt.fu<wbr>di-sn1:10T</div>
<div> Portal: <a href="http://10.53.0.201:3260" target="_blank">10.53.0.201:3260</a>,1</div>
<div> Iface Name: default</div>
<div>FIRMWARE:</div>
<div>No targets found.</div>
</div>
<div><br>
</div>
<div class="gmail_extra">
<div class="gmail_extra">=== On iscsi target: ===</div>
<div class="gmail_extra">
<div class="gmail_extra">[root@fuvs-sn1 ~]# cat
/proc/mdstat </div>
<div class="gmail_extra">Personalities : [raid1]
[raid6] [raid5] [raid4] </div>
<div class="gmail_extra">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]</div>
<div class="gmail_extra"> 9766302720 blocks
super 1.2 level 6, 512k chunk, algorithm 2
[12/12] [UUUUUUUUUUUU]</div>
<div class="gmail_extra"> bitmap: 0/8 pages
[0KB], 65536KB chunk</div>
<div>...etc...</div>
</div>
<div>
<div><br>
</div>
<div><br>
</div>
<div>[root@fuvs-sn1 ~]# cat /etc/tgt/targets.conf </div>
<div>default-driver iscsi<br>
</div>
<div><br>
</div>
<div><target iqn.2017-03.cz.dragon.ovirt.fu<wbr>vs-sn1:10T><br>
</div>
<div> # provided devicce as a iSCSI target</div>
<div> backing-store /dev/md125</div>
<div> # iSCSI Initiator's IP address you
allow to connect</div>
<div> #initiator-address <a href="http://10.53.0.0/23" target="_blank">10.53.0.0/23</a></div>
<div></target></div>
</div>
<div>
<div><br>
</div>
</div>
<div>
<div class="m_5126560417928153355m_8027764606206990211m_-489792576559789274m_-8160082185690820700gmail-m_5377000683826010473gmail_signature">
<div dir="ltr">
<div>
<div dir="ltr">
<div>--<br>
Lukas Kaplan<br>
<br>
</div>
</div>
</div>
</div>
</div>
</div>
<div>
<div class="m_5126560417928153355m_8027764606206990211m_-489792576559789274h5">
<div class="gmail_quote">2017-03-25 12:36
GMT+01:00 Lukas Kaplan <span dir="ltr"><<a href="mailto:lkaplan@dragon.cz" target="_blank">lkaplan@dragon.cz</a>></span>:<br>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div dir="auto">
<div>Co muze myslet tim mappingem?</div>
<div id="m_5126560417928153355m_8027764606206990211m_-489792576559789274m_-8160082185690820700gmail-m_5377000683826010473m_5120060402219677135AppleMailSignature"><br>
</div>
<div id="m_5126560417928153355m_8027764606206990211m_-489792576559789274m_-8160082185690820700gmail-m_5377000683826010473m_5120060402219677135AppleMailSignature">Jinak
muzu zkusit ddckem celou storage prepsat
nulami.</div>
<div id="m_5126560417928153355m_8027764606206990211m_-489792576559789274m_-8160082185690820700gmail-m_5377000683826010473m_5120060402219677135AppleMailSignature"><br>
</div>
<div id="m_5126560417928153355m_8027764606206990211m_-489792576559789274m_-8160082185690820700gmail-m_5377000683826010473m_5120060402219677135AppleMailSignature">co
ty na to?<br>
<br>
Odesláno z iPhonu</div>
<div><br>
Začátek přeposílané zprávy:<br>
<br>
</div>
<blockquote type="cite">
<div><b>Od:</b> Yaniv Kaul <<a href="mailto:ykaul@redhat.com" target="_blank">ykaul@redhat.com</a>><br>
<b>Datum:</b> 24. března 2017 23:25:21
SEČ<br>
<b>Komu:</b> Lukáš Kaplan <<a href="mailto:lkaplan@dragon.cz" target="_blank">lkaplan@dragon.cz</a>><br>
<b>Kopie:</b> users <<a href="mailto:users@ovirt.org" target="_blank">users@ovirt.org</a>><br>
<b>Předmět:</b> <b>Re: [ovirt-users]
iSCSI Discovery cannot detetect LUN</b><br>
<br>
</div>
</blockquote>
<blockquote type="cite">
<div>
<div dir="ltr"><br>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Fri,
Mar 24, 2017 at 1:34 PM, Lukáš
Kaplan <span dir="ltr"><<a href="mailto:lkaplan@dragon.cz" target="_blank">lkaplan@dragon.cz</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div dir="ltr">Hello all,
<div><br>
</div>
<div>please do you have some
experience with
troubleshooting adding of
iSCSI domain to ovirt
4.1.1? </div>
<div><br>
</div>
<div>I am chalenging this
issue now:</div>
<div><br>
</div>
<div>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.</div>
<div><br>
</div>
<div>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)</div>
</div>
</blockquote>
<div><br>
</div>
<div>Are you sure mappings are
correct? </div>
<div>Can you ensure the LUN is
empty?</div>
<div>Y.</div>
<div> </div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div dir="ltr">
<div><br>
</div>
<div>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.</div>
<div><br>
</div>
<div>I tryed to examine
vdsm.log, but it is very
detailed and unredable for
me :-/</div>
<div><br>
</div>
<div>Thak you in advance,
have a nice day,<span class="m_5126560417928153355m_8027764606206990211m_-489792576559789274m_-8160082185690820700gmail-m_5377000683826010473HOEnZb"><font color="#888888"><br clear="all">
<div>
<div class="m_5126560417928153355m_8027764606206990211m_-489792576559789274m_-8160082185690820700gmail-m_5377000683826010473m_5120060402219677135m_2866670472223528587gmail_signature">
<div dir="ltr">
<div>
<div dir="ltr">
<div>--<br>
Lukas Kaplan<br>
<br>
<br>
</div>
</div>
</div>
</div>
</div>
</div>
</font></span></div>
</div>
<span class="m_5126560417928153355m_8027764606206990211m_-489792576559789274m_-8160082185690820700gmail-m_5377000683826010473HOEnZb"><font color="#888888">
<br>
______________________________<wbr>_________________<br>
Users mailing list<br>
<a href="mailto:Users@ovirt.org" target="_blank">Users@ovirt.org</a><br>
<a href="http://lists.ovirt.org/mailman/listinfo/users" rel="noreferrer" target="_blank">http://lists.ovirt.org/mailman<wbr>/listinfo/users</a><br>
<br>
</font></span></blockquote>
</div>
<span class="m_5126560417928153355m_8027764606206990211m_-489792576559789274m_-8160082185690820700gmail-m_5377000683826010473HOEnZb"><font color="#888888"><br>
</font></span></div>
</div>
</div>
</blockquote>
</div>
</blockquote>
</div>
<br>
</div>
</div>
</div>
</div>
</blockquote>
</div>
<br>
</div>
</div>
</div>
<br>
<fieldset class="m_5126560417928153355m_8027764606206990211m_-489792576559789274mimeAttachmentHeader"></fieldset>
<br>
<pre>______________________________<wbr>_________________
Users mailing list
<a class="m_5126560417928153355m_8027764606206990211m_-489792576559789274moz-txt-link-abbreviated" href="mailto:Users@ovirt.org" target="_blank">Users@ovirt.org</a>
<a class="m_5126560417928153355m_8027764606206990211m_-489792576559789274moz-txt-link-freetext" href="http://lists.ovirt.org/mailman/listinfo/users" target="_blank">http://lists.ovirt.org/mailman<wbr>/listinfo/users</a>
</pre>
</blockquote>
<br>
</div></div></div>
<br>______________________________<wbr>_________________<br>
Users mailing list<br>
<a href="mailto:Users@ovirt.org" target="_blank">Users@ovirt.org</a><br>
<a href="http://lists.ovirt.org/mailman/listinfo/users" rel="noreferrer" target="_blank">http://lists.ovirt.org/mailman<wbr>/listinfo/users</a><br>
<br></blockquote></div></div></div><br></div></div>
</blockquote></div><br></div></div></div>
</blockquote></div><br></div></div>