Hi James, here's an update for the ALUA device handler I've been hoarding for quite some time. The major bit here is the asynchronous RTPG handling. With the original design we would treat every LUN independently, despite the fact that several LUNs might in fact belong to the same target port group. So any change on one LUN will affect the others, too. And we now can treat LUNs in 'transitioning' ALUA mode correctly, as now we'll be blocking any I/O in the prep_fn() until the controller is in a working state again. This is the second version of the patchset, containing suggested changes from Mike Christie to move GFP_ATOMIC to GFP_KERNEL allocations. Hannes Reinecke (16): scsi_dh_alua: Improve error handling scsi_dh_alua: use flag for RTPG extended header scsi_dh_alua: Pass buffer as function argument scsi_dh_alua: Make stpg synchronous scsi_dh_alua: put sense buffer on stack scsi_dh_alua: use local buffer for VPD inquiry scsi_dh_alua: Use separate alua_port_group structure scsi_dh_alua: parse target device id scsi_dh_alua: simplify sense code handling scsi_dh_alua: Do not attach to management devices scsi_dh_alua: multipath failover fails with error 15 scsi_dh: return individual errors in scsi_dh_activate() scsi_dh_alua: Clarify logging message scsi_dh: invoke callback if ->activate is not present scsi_dh_alua: revert commit a8e5a2d593cbfccf530c3382c2c328d2edaa7b66 scsi_dh_alua: Use workqueue for RTPG drivers/scsi/device_handler/scsi_dh.c | 18 +- drivers/scsi/device_handler/scsi_dh_alua.c | 1045 ++++++++++++++++++++-------- 2 files changed, 750 insertions(+), 313 deletions(-) -- 1.7.12.4 -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
