[Beowulf] Mature open source hierarchical storage management
lindahl at pbm.com
Fri Oct 23 20:14:45 EDT 2009
On Fri, Oct 23, 2009 at 01:56:17PM -0700, Jon Forrest wrote:
> They were all very fragile, but I think this was mostly due to
> one prevailing problem. This is that, at the time, the OSs didn't
> have hooks in the places necessary for an HSM system to do the
> right thing.
The hooks thing you're thinking of is the DMAPI standard. I think it's
only supported in a subset of filesystems, things like xfs, jfs, GPFS,
etc. I don't know if there are any free HSMs that use it out there.
Googling turned up a CERN HSM project, CASTOR. It isn't a transparent
interface, but that avoids a lot of OS hassle.
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