FreeBSD 9.0 & LSI MegaRAID SATA problem

Bas Smeelen b.smeelen at
Tue Jul 10 10:05:03 UTC 2012

On 07/10/2012 11:49 AM, Bosko Radivojevic wrote:
> Hi Michael,
> thank you for your response.
>> So it's not an LSI MegaRAID, but an Intel Controller?
> It is LSI MegaRAID chip but connected to Intel's I/O Controller Hub
> (southbridge). On FreeBSD 8.3 gmirror is not configured:
> # gmirror list
> gmirror: Command 'list' not available.
> # gmirror status
> gmirror: Command 'status' not available.
> It is somehow enabled through some driver in kernel:
> # grep ar0 /var/run/dmesg.boot
> ar0: writing of DDF metadata is NOT supported yet
> ar0: 952720MB <DDF RAID1> status: READY
> ar0: disk0 READY (master) using ad4 at ata2-master
> ar0: disk1 READY (mirror) using ad6 at ata3-master
> It is probably "soft-RAID", but I prefer to use it though appropriate
> driver instead of classical software RAID configured through OS.
> As I said, I'm not that familiar with FreeBSD - how I can check which
> driver "created" /dev/ar0?
> Thanks,
> Bosko

Wouldn't this be ataraid ?
This is still present in 8.3-RELEASE but not anymore in 9-STABLE.


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