Bug 196820

Summary: IBM x3650, ServeRAID M5110e, volumes corrupted after boot with mrsas driver
Product: Base System Reporter: Michael <asmw4>
Component: kernAssignee: freebsd-bugs (Nobody) <bugs>
Status: New ---    
Severity: Affects Some People CC: asmw4
Priority: ---    
Version: 10.1-RELEASE   
Hardware: amd64   
OS: Any   

Description Michael 2015-01-17 08:45:45 UTC 
On my IBM x3650 M4, running FreeBSD 10.1-RELEASE I'm using the mfi driver with the builtin M5110e RAID controller. Then I thought to try the mrsas driver even the M5110e is not listed in the documentation. I set the 

  hw.mfi.mrsas_enable=1

flag at the loader prompt. Then FreeBSD started, the volumes where listed as da* devices but I was not able to mount the root filesystem. Then I started the machine again with mfi enabled. But then I noticed that all volumes are corrupted, which means that even the GPT was gone. 

The problem seems to be reproducible: A second try had the same result.

I don't know if it's intended that the M5110 should run with mrsas. If not, it should not damage the volumes. At least there should be a clear warning in the man page.

The machine is not in production use at the moment, so I can do more testing if required.

Michael