[gpfsug-discuss] Multipath configurations
orlando.richards at ed.ac.uk
Mon Sep 16 16:25:26 BST 2013
We're building a new storage service and are planning on using
multipathd rather than LSI's rdac to handle the multipathing.
It's all working well, but I'm looking at settling on the final
parameters for the multipath.conf. In particular, the values for:
* rr_min_io (1?)
* failback (I think "manual" or "followover"?)
* no_path_retry (guessing here - fail?)
* dev_loss_tmo (guessing here - 15?)
* fast_io_fail_tmo (guessing here - 10?)
Does anyone have a working multipath.conf for LSI based storage systems
(or others, for that matter), and/or have experience and wisdom to share
on the above settings (and any others I may have missed?). Any war
stories about dm-multipath to share?
Dr Orlando Richards
IT Infrastructure Division
Tel: 0131 650 4994
The University of Edinburgh is a charitable body, registered in
Scotland, with registration number SC005336.
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