Messages in this thread |  | | Date | Mon, 9 Sep 2002 12:49:44 +0200 | From | Lars Marowsky-Bree <> | Subject | [RFC] Multi-path IO in 2.5/2.6 ? |
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Morning everyone,
I hope people are waking up by now ;-)
So, what is the take on "multi-path IO" (in particular, storage) in 2.5/2.6?
Right now, we have md multipathing in 2.4 (+ an enhancement to that one by Jens Axboe and myself, which however was ignored on l-k ;-), an enhancement to LVM1 and various hardware-specific and thus obviously wrong approaches.
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.
I noticed that EVMS duplicates the entire md layer internally (great way to code, really!), so that might also require changing if I update the md code.
Or can the LVM2 device-mapper be used to do that more cleanly?
I wonder whether anyone has given this some thought already.
Sincerely, Lars Marowsky-Brée <lmb@suse.de>
-- Immortality is an adequate definition of high availability for me. --- Gregory F. Pfister
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