tnt
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Joined: 27 Feb 2004
Posts: 1227
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 Posted: Fri Oct 21, 2011 8:07 pm Post subject: HP Smart Array P800: CCISS vs. HPSA ? |
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I'm trying to get the best solution for HP Smart Array P800 on the gentoo box running kernel 3.x (3.0.6 currently).
there are two completely modules: CCISS and HPSA.
CCISS:
- the old one
- represents controller and LUNS as pure block devices
- officially supports P800
HPSA:
- the new one (in mainline kernel from 2.6.33)
- represents LUNS as SCSI devices (uses SCSI layer and all it's features)
- officially doesn't support P800
I've read here:
http://cciss.sourceforge.net/
that
| Quote: | | A new Smart Array driver called "hpsa" has been accepted into the main line linux kernel as of Dec 18, 2009, in linux-2.6.33-rc1. This new driver will support new Smart Array products going forward, and the cciss driver will eventually be deprecated. |
I wanted to use HPSA as it CCISS will eventually be deprecated.
I've loaded hpsa module with hpsa_allow_any=1 option which allows module to recognize "unsupported" controllers, and I've got my LUNs visible in /dev/sd*.
made some partitions, put ext4, mounted, done some testing.
everything seems fine so far.
only visible drawback is that hpsa-related tools cannot detect the controller (for info/fine tuning).
so, what's the right way to go:
1. stay with HPSA hopping it will eventually support P800
2. use CCISS hopping it will not vanish from kernel during this box's lifetime
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