[ovirt-users] iSCSI Discovery cannot detetect LUN

[Lukáš Kaplan]

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


2017-03-27 16:22 GMT+02:00 Lukáš Kaplan <lkaplan at dragon.cz>:

> 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 at 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 at 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 at 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 at 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 at dragon.cz>:
>
>> 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 at redhat.com>
>> *Datum:* 24. března 2017 23:25:21 SEČ
>> *Komu:* Lukáš Kaplan <lkaplan at dragon.cz>
>> *Kopie:* users <users at ovirt.org>
>> *Předmět:* *Re: [ovirt-users] iSCSI Discovery cannot detetect LUN*
>>
>>
>>
>> On Fri, Mar 24, 2017 at 1:34 PM, Lukáš Kaplan <lkaplan at dragon.cz> 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 at ovirt.org
>>> http://lists.ovirt.org/mailman/listinfo/users
>>>
>>>
>>
>
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