Tim Hare wrote:
I'm not that experienced in Linux (System Z or otherwise) - but perhaps this would be a place for a new filesystem, one built from the ground up to handle migration / recall of files in the ABR / HSM manner? In thinking about it, it seems to me that the filesystem code is where you'd handle things like directory entries which don't map to real blocks on disk (i.e. a migrated file), and where you'd handle automatic recall based on someone opening the file.
As far as I know, XFS does support this. At least it does on Irix, and I believe this is also true for the Linux implementation. See http://oss.sgi.com/projects/xfs/ , look for "Support for Hierarchical Storage". Whether or not there are HSM solutions available that exploit this filesystem feature is unknown to me. -- Carsten Otte has stopped smoking: Ich habe in 11 Monate, 2 Wochen und 21 Stunden schon 1.679,56 Euro gespart anstatt 6.998,20 Zigaretten zu kaufen.
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