Hello all,
I've been on a real roller coaster ride getting a large virtual host up
and running. One troublesome thing I've discovered (the hard way) is
that the drivers for Marvell SAS/SATA chips still have a few problems.
After Googling around quite a bit, I see a significant number of others
have had similar issues, especially evident in the Ubuntu forums but
also for a few RHEL/CentOS users.
I have found that under heavy load (in my case, simply doing the initial
sync of large RAID-6 arrays) the current 0.8 driver can wander off into
the weeds after a while, less so for the older 0.5 driver in CentOS-5.
It would appear that some sort of bug has been introduced into the newer
driver.
I've had to replace the Marvell-based controllers with LSI, which seem
rock solid. I'm rather disappointed that I've wasted good money on
several Marvell-based controller cards (2 SAS/SATA and 2 SATA).
My question ... is anyone aware of the *real* status of these drivers?
The Internet is full of somewhat conflicting reports. I'm referring to
'mvsas' and 'sata-mv', both of which seem to have issues under heavy
load. It sure would be nice to return to using what appear to be
well-made controller cards. I understand that even Alan Cox has
expressed some frustration with the current driver status.
FWIW, I had similar problems under the RHEL-6 evaluation OS too.
Chuck
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