Hi,

with todays git I got a huge amount of warnings for device mapper:
device-mapper: uevent: version 1.0.3                                                                              
device-mapper: ioctl: 4.15.0-ioctl (2009-04-01) initialised: dm-devel@redhat.com                                  
device-mapper: table: 252:0: target device dasdf1 is misaligned: physical_block_size=4096, logical_block_size=4096, alignment_offset=0, start=196608                                                                                
device-mapper: table: 252:0: target device dasde1 is misaligned: physical_block_size=4096, logical_block_size=4096, alignment_offset=0, start=196608                                                                                
device-mapper: table: 252:0: target device dasdf1 is misaligned: physical_block_size=4096, logical_block_size=4096, alignment_offset=0, start=196608                                                                                
device-mapper: table: 252:0: target device dasde1 is misaligned: physical_block_size=4096, logical_block_size=4096, alignment_offset=0, start=196608                                                                                
device-mapper: table: 252:1: target device dasdf1 is misaligned: physical_block_size=4096, logical_block_size=4096, alignment_offset=0, start=5368905728                                                                            
device-mapper: table: 252:1: target device dasde1 is misaligned: physical_block_size=4096, logical_block_size=4096, alignment_offset=0, start=5368905728                                                                            
device-mapper: table: 252:1: target device dasdf1 is misaligned: physical_block_size=4096, logical_block_size=4096, alignment_offset=0, start=5368905728                                                                            
device-mapper: table: 252:1: target device dasde1 is misaligned: physical_block_size=4096, logical_block_size=4096, alignment_offset=0, start=5368905728                                                                            
device-mapper: table: 252:2: target device dasdf1 is misaligned: physical_block_size=4096, logical_block_size=4096, alignment_offset=0, start=6979518464                                                                            
device-mapper: table: 252:2: target device dasde1 is misaligned: physical_block_size=4096, logical_block_size=4096, alignment_offset=0, start=6979518464                                                                            
device-mapper: table: 252:2: target device dasdf1 is misaligned: physical_block_size=4096, logical_block_size=4096, alignment_offset=0, start=6979518464                                                                            
device-mapper: table: 252:2: target device dasde1 is misaligned: physical_block_size=4096, logical_block_size=4096, alignment_offset=0, start=6979518464                                                                            
device-mapper: table: 252:3: target device dasdf1 is misaligned: physical_block_size=4096, logical_block_size=4096, alignment_offset=0, start=7189233664 
[...]

But the system seems to work fine.
The same devices produce no warning with a 2.6.32 vanilla kernel.

[root@t63lp34 ~]# pvdisplay                                                                                                   
  --- Physical volume ---                                                                                                                                    
  PV Name               /dev/dasdf1                                                                                                                          
  VG Name               space                                                                                                                                
  PV Size               22.49 GB / not usable 2.28 MB                                                                                                        
  Allocatable           yes                                                                                                                                  
  PE Size (KByte)       4096                                                                                                                                                        
  Total PE              5758                                                                                                                                                        
  Free PE               3                                                                                                                                                           
  Allocated PE          5755                                                                                                                                                        
  PV UUID               Uocvlz-I6wv-JtLH-8W5L-ziib-pP7h-4Qdzgz                                                                                                                      
                                                                                                                                                                                    
  --- Physical volume ---
  PV Name               /dev/dasde1
  VG Name               space
  PV Size               22.49 GB / not usable 2.28 MB
  Allocatable           yes
  PE Size (KByte)       4096
  Total PE              5758
  Free PE               15
  Allocated PE          5743
  PV UUID               UuM16H-GUdC-gfA3-3yvE-c5Af-UVPW-Cfe2no

  --- Physical volume ---
  PV Name               /dev/dasdd1
  VG Name               space
  PV Size               4.59 GB / not usable 3.38 MB
  Allocatable           yes (but full)
  PE Size (KByte)       4096
  Total PE              1173
  Free PE               0
  Allocated PE          1173
  PV UUID               800CzR-0hjD-lL6Z-yQPt-vRcl-WlYp-cUtZwJ

  --- Physical volume ---
  PV Name               /dev/dasdc1
  VG Name               space
  PV Size               4.59 GB / not usable 3.38 MB
  Allocatable           yes
  PE Size (KByte)       4096
  Total PE              1173
  Free PE               12
  Allocated PE          1161
  PV UUID               hG8bJE-xYJL-eo0N-tsD5-kdcH-AONB-FGdtAK

[root@t63lp34 ~]# vgdisplay
  --- Volume group ---
  VG Name               space
  System ID
  Format                lvm2
  Metadata Areas        4
  Metadata Sequence No  96
  VG Access             read/write
  VG Status             resizable
  MAX LV                0
  Cur LV                65
  Open LV               4
  Max PV                0
  Cur PV                4
  Act PV                4
  VG Size               54.15 GB
  PE Size               4.00 MB
  Total PE              13862
  Alloc PE / Size       13832 / 54.03 GB
  Free  PE / Size       30 / 120.00 MB
  VG UUID               AcRPg8-6DaJ-ND6i-s3H7-Sh5V-8KWa-KtKRmv