Comment 54 for bug 1567602

Added a new attempt. This time the pick-list is rather excessive. Unfortunately the more likely changes come later. So while there might be some patches which probably can be dropped, I fear the overall set still will be big. (Download again: http://people.canonical.com/~smb/lp1567602/)

5da8bf5 scsi_dh_alua: Disable ALUA handling for non-disk devices
71b066c scsi_dh_alua: Use vpd_pg83 information
fc63978 scsi_dh_alua: improved logging
5e60928 scsi_dh_alua: sanitze sense code handling
73a86b1 scsi_dh_alua: use standard logging functions
9ba4fe6 scsi_dh_alua: return standard SCSI return codes in submit_rtpg
ae5408e scsi_dh_alua: fixup description of stpg_endio()
79ded51 scsi_dh_alua: use flag for RTPG extended header
9121b4c scsi_dh_alua: use unaligned access macros
ce6f796 scsi_dh_alua: rework alua_check_tpgs() to return the tpgs mode
567d885 scsi_dh_alua: simplify sense code handling
c6fe649 scsi: Add scsi_vpd_lun_id()
f52649f scsi: Add scsi_vpd_tpg_id()
cdacdc7 scsi_dh_alua: use scsi_vpd_tpg_id()
6a49629 scsi_dh_alua: Remove stale variables
fdd3a8c scsi_dh_alua: Pass buffer as function argument
542a8c0 scsi_dh_alua: separate out alua_stpg()
ab7ae03 scsi_dh_alua: Make stpg synchronous
fe551f5 scsi_dh_alua: call alua_rtpg() if stpg fails
fc55215 scsi_dh_alua: switch to scsi_execute_req_flags()
0b98a60 scsi_dh_alua: allocate RTPG buffer separately
e4dee21 scsi_dh_alua: Use separate alua_port_group structure
ecec8731 scsi_dh_alua: use unique device id
b20a55f scsi_dh_alua: simplify alua_initialize()
81537d5 revert commit a8e5a2d593cb ("[SCSI] scsi_dh_alua: ALUA handler attach sh
487cdf2 scsi_dh_alua: move optimize_stpg evaluation
b5cbbc6 scsi_dh_alua: remove 'rel_port' from alua_dh_data structure
dd2af31 scsi_dh_alua: Use workqueue for RTPG
bdf2fc3 scsi_dh_alua: Allow workqueue to run synchronously
a936713 scsi_dh_alua: Add new blacklist flag 'BLIST_SYNC_ALUA'
d69dd4d scsi_dh_alua: Recheck state on unit attention
abcf58c scsi_dh_alua: update all port states
82d5f45 scsi_dh_alua: Send TEST UNIT READY to poll for transitioning
676fa7c scsi_dh_alua: Update version to 2.0
9f33778 scsi_dh_alua: do not fail for unknown VPD identification