[ovirt-users] iSCSI question... LUNS->Targets balnk

[Alan Murrell]

Quoting "Donny Davis" <donny at cloudspin.me>:

> tail -f /var/log/vdsm/vdsm.log
>
> Then then go through the connect sequence. You should get a better idea.

It shows a successful connect, but keeps trying to do a scan.  About  
every 30 seconds, the following entry shows up:

--- START ---
Thread-12294::DEBUG::2015-08-10  
10:13:09,286::misc::741::Storage.SamplingMethod::(__call__) Trying to  
enter sampling method (storage.iscsi.rescan)
Thread-12294::DEBUG::2015-08-10  
10:13:09,286::iscsi::424::Storage.ISCSI::(rescan) Performing SCSI  
scan, this will take up to 30 seconds
Thread-12294::DEBUG::2015-08-10  
10:13:09,286::iscsiadm::97::Storage.Misc.excCmd::(_runCmd)  
/usr/bin/sudo -n /sbin/iscsiadm -m session -R (cwd None)
--- END ---

so it seems it never quite finished the scan.


> Did you put any acls on the iscsi mount to allow the hosts to connect?

I did.  I was able to get my oVirt host's iSCSI Initiator Name from  
it's "General" tab/page "System > Hosts", and created the ACL for it  
in "targetcli":

-- START ---
cd  
/iscsi/iqn.2003-01.org.linux-iscsi.yvr001svr01.x8664:sn.33a56c3324e0/tpg1/acls
create iqn.1994-05.com.redhat:ba4cc8b3368e
--- END ---

The output indicated that the ACL was created and mapped to LUN 0.  I  
ran the exact same command for my Win 7 PC (using it's iSCSI Initiator  
Name, of course).

I did not setup any sort of CHAP authentication.

There is one thing I have noticed in viewing my /var/log/messages on  
my host/storage that may have an effect.  As you may or may not know,  
I am running a single-server with hosted engine.  My storage is also  
on this server.

What I have noticed is that my host/storage server is mounting the  
iSCSI target automatically as '/dev/sdd', so I am not sure if that may  
be affecting oVirt's ability to scan, if it is already connected to by  
the very same host?

(I hope this makes sense?  If not, let me know and I can try to answer  
your questions better)