Le 21/10/2014 12:18, Nicolas Ecarnot a écrit :
Hi,
Setting up our third oVirt infra, we are now connecting it to an EMC CX4-120 SAN. On this SAN, we have set up a classical storage group, added the authorized hosts, registered them.
On the oVirt side, we want to create the first master storage domain and so we give the GUI the right SAN ip, and the iSCSI connection is working.
We see appearing the two virtual IP of the storage processors (A and B), and the login button reacts well, no error appears. But no LUN shows up at this point.
Looking at the hosts used by this connection, it appears that the iSCSI connection worked well, and that the LUN is visible on the host side ("iscsiadm -m session -P3").
So now, in the web GUI, there is no LUN showing up I could connect to. I have isolated the relevant logs - the engine one and the vdsm one :
Engine : http://pastebin.com/32Sg85C8 VDSM : http://pastebin.com/BbY6mVSk
I don't know what is missing? May you help me?
I triple checked every parts I could check, but I don't know everything. On the host that established the connection, I see that iscsiadm -m session -P3 shows a correct connection, and shows /dev/sdb and sdc But lvmdiskscan shows an error on sdb : /dev/sdb: read failed after 0 of 4096 at 0... multipath -ll show nothing /var/log/messages shows : Oct 22 09:41:39 serv-vm-adms02 kernel: sd 13:0:0:0: [sdb] Test WP failed, assume Write Enabled Oct 22 09:41:39 serv-vm-adms02 kernel: sd 13:0:0:0: [sdb] Asking for cache data failed Oct 22 09:41:39 serv-vm-adms02 kernel: sd 13:0:0:0: [sdb] Assuming drive cache: write through Oct 22 09:41:39 serv-vm-adms02 kernel: device-mapper: table: 253:3: multipath: error getting device Oct 22 09:41:39 serv-vm-adms02 kernel: device-mapper: ioctl: error adding target to table but I'm not sure multipath is to be involved at this point, so may not be relevant. Beside debugging this, have you just some advices, some trails to follow? -- Nicolas Ecarnot