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Go Back   Linux Archive > Redhat > Device-mapper Development

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Old 03-18-2009, 07:34 AM
Kiyoshi Ueda
Default dm-mpath: dynamic load balancers (v1)


The patch-set adds the following 2 dynamic load balancers:
o dm-queue-length: queue-length oriented dynamic load balancer
o dm-service-time: service-time oriented dynamic load balancer

This patch-set can be applied on top of 2.6.29-rc8.
No dependencies on Alasdair's linux-next patches.

While the patches compile and work with the current bio-based dm,
for them to *properly* work, the request-based dm patches should
be applied, too.
See <http://lkml.org/lkml/2008/9/12/100> for why request-based dm
improves multipath load balancing.

Summary of the patch-set:
1/3: dm-mpath: interface change for dynamic load balancers
2/3: dm-mpath: add queue-length oriented dynamic load balancer
3/3: dm-mpath: add service-time oriented dynamic load balancer

drivers/md/Kconfig | 18 ++
drivers/md/Makefile | 2
drivers/md/dm-mpath.c | 28 ++-
drivers/md/dm-path-selector.h | 8 -
drivers/md/dm-queue-length.c | 257 +++++++++++++++++++++++++++++++++++
drivers/md/dm-round-robin.c | 2
drivers/md/dm-service-time.c | 301 ++++++++++++++++++++++++++++++++++++++++++
7 files changed, 603 insertions(+), 13 deletions(-)

Kiyoshi Ueda

dm-devel mailing list

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