Bug 520465

Description of problem:
Upgrade from Fedora 10 to Fedora 11 (2.6.27.30-170.2.82.fc10.x86_64 -> 2.6.29.6-217.2.16.fc11.x86_64) leaves recognition of eSATA drives on port multiplier cage until much later in boot, unfortunately after rc.sysinit starts all md (RAID) devices, and thus the md device composed of those drives is not available.  Boot fails at processing fstab mount entry for that md device.  Suspect that modules scsi_wait_scan and/or sata_mv are involved.  

With the fstab entry disabled, boot succeeds and md device can be manually assembled, mounted successfully, suggesting it is an order or interlocking issue and not functionality.

The eSATA card also controls two (internal) SATA drives and these are recognized at the same point they were under F10.  There were other tasks (bringing up other hardware) that log in dmesg between the appearance of these drives and the external port multiplier drives in F10, but the key is mdadm is not logged in any form between the appearance of the two sets in F10 vs. F11 where all mdadm entries during the boot appear before the external drives are logged.

confirmed initrd in F11 has 'modprobe scsi_wait_scan; rmmod scsi_wait_scan' sequence, and expect that this is what is supposed to order complete device 
recognition before mdadm calls during rest of boot (in initrd and rc.sysinit).

Tried alternative F11 initrd that force loaded sata_mv and all raid modules at boot, but this made no change in the result where external drives were left unassembled into md. 

Version-Release number of selected component (if applicable):
2.6.29.6-217.2.16.fc11.x86_64

How reproducible:
Perfectly
  
Actual results:
external drives are not assembled into md at boot

Expected results:
external drives assembled into md at boot before fstab is processed

Additional info: