We are trying to set a storage link between an HP c3000 blade system (2 servers, 2 3Gb SAS switches) and an MSA array (2 controllers).
We also have 4 SAS links :
- MSA controller 1 port 1 to 3Gb SAS 1 port 1
- MSA controller 1 port 2 to 3Gb SAS 2 port 1
- MSA controller 2 port 1 to 3Gb SAS 1 port 2
- MSA controller 2 port 2 to 3Gb SAS 2 port 2
Servers are running RHEL 6 and domino messaging.
Array is splitted into 2 logical volumes : one per server (no shared storage)
We are experiencing troubles testing storage links redundancy.
RHEL experiences I/O errors as soon as some links are missing.
What is the proper way to set a fully redundant storage path (multipath) with RHEL6 ?
Any help will be appreciated (migration impared)