Wojciech Puchar wrote:
I recently removed one pair of disks from a windows "hardware :)"
RAID controller, and upon inserting it into a newly built FreeBSD
system, it was immediately detected by the ar driver, and messages
started coming in, like
is there actually any difference in ar and gmirror/gstripe except that
ar is simpler, takes only whole drives and use "hardware RAID ;)"
compatible headers ?
make the disks forget about their previous RAID-life:
atacontrol delete ar0
Have a look at man atacontrol. I have not tried it, but it is
probably worth a try.
I've used gmirror on several occasions, and it works well for me. I have
never used ar, but as I understand this is limited to ata disks (hence
ar=atapi raid). The geom framework probably provides a lot more features
and is not limited the way ar is. I would not mind using ar in this
particular system, but I moved disks one by one, erasing the first one
(ar was still complaining about the other one missing after I erased it)
and when I later added the second one, I got a kernel panic. Mind you,
the ar "signature" or whatever was written in a windows system and may
not have been exactly compatible. I removed ar from the kernel and
continued with my usual gmirror stuff (which works flawlessly)
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