Lars Marowsky-Bree <lmb@suse.de> said:
> So, what is the take on "multi-path IO" (in particular, storage) in
> 2.5/2.6?
I've already made my views on this fairly clear (at least from the SCSI stack
standpoint):
- multi-path inside the low level drivers (like qla2x00) is wrong
- multi-path inside the SCSI mid-layer is probably wrong
- from the generic block layer on up, I hold no specific preferences
That being said, I'm not particularly happy to have the multi-path solution
tied to a specific raid driver; I'd much rather it were in something generic
that could be made use of by all raid drivers (and yes, I do see the LVM2
device mapper as more hopeful than md in this regard).
> I am looking at what to do for 2.5. I have considered porting the
> small changes from 2.4 to md 2.5. The LVM1 changes are probably and
> out gone, as LVM1 doesn't work still.
Well, neither of the people most involved in the development (that's Neil
Brown for md in general and Ingo Molnar for the multi-path enhancements) made
any comments---see if you can elicit some feedback from either of them.
James
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This archive was generated by hypermail 2b29 : Sun Sep 15 2002 - 22:00:16 EST