[dm-devel] [PATCH 0/2] 'default' hardware handler for multipath
Hannes Reinecke
hare at suse.de
Mon Apr 2 16:43:53 UTC 2012
This patchset introduces a 'default' hardware handler for
dm-multipath.
Modern storage arrays typically support two failover methods,
the original proprietary and the modern ALUA-based one.
The device_handler implementation will currently select the
ALUA handler, and falling back to the proprietary one if
ALUA isn't supported.
However, in the built-in hardware table for multipath one
can specify only one hardware handler, causing the original
hardware handler to be overwritten.
By specifying a 'default' hardware handler multipath will not
try to attach a specific hardware handler, but rather using
the currently attached on.
Hannes Reinecke (2):
scsi_dh: Allow NULL hardware handler name in scsi_dh_attach()
dm-mpath: Allow 'default' hardware handler
drivers/md/dm-mpath.c | 8 ++++++--
drivers/scsi/device_handler/scsi_dh.c | 8 ++++++--
2 files changed, 12 insertions(+), 4 deletions(-)
--
1.7.7
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