MetroCluster site cannot see remote drives
Applies to
- Fabric MetroCluster
- ONTAP 9
- DWDM used between sites
Issue
- The nodes at one of the two sites are unable to see the remote disks, shelves & ATTO bridges
Example:
ClusterA::> system node run -node ClusterA-01 -command sysconfig -a slot 1: FC Host Adapter 1a (Emulex XE501 rev. 1, N-port, <UP>)
...
FC-to-SAS Bridge:
SiteA-SW1:1-11.126L0 : ATTO FibreBridge7500N 3.30 FB7500N123456
SiteA-SW1:1-9.126L0 : ATTO FibreBridge7500N 3.30 FB7500N234567
Missing --> SiteB-SW1:1-9.126L0 : ATTO FibreBridge7500N 3.30 FB7500N654321
Missing --> SiteB-SW1:1-11.126L0 : ATTO FibreBridge7500N 3.30 FB7500N765432- May see a loss of a link to the partner in the EMS logs:
Tue Jun 24 00:43:32 -0400 [<node>: ispfcvi2500_port1: fcvi.qlgc.rmt.link.down:notice]: FC-VI adapter: Link to partner node over port 0e is down. Partner port id = <port_id>, partner node's system id = <id>.
- Because half of the disks are lost the system may transition to multi-path and you may receive the following EMS message:
Tue Jun 24 00:43:12 -0400 [<node>: dsa_disc: shelf.config.tompha:info]: System has transitioned to multi-path HA attached storage