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 -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
