Hi,

so i have upgraded a system to kernel 2.6.24. After that, it failed to 
boot with the usual message telling, that the rootfs on device /dev/sda1 
  cannot be mounted (a raid1 run by the controller below).

With 2.6.23.12, everything is working fine.

# lspci -v:

03:01.0 RAID bus controller: Intel Corporation RAID Controller
         Subsystem: Intel Corporation Unknown device 01db
         Flags: bus master, 66MHz, slow devsel, latency 64, IRQ 17
         Memory at ddffc000 (32-bit, prefetchable) [size=16K]
         [virtual] Expansion ROM at deef0000 [disabled] [size=32K]
         Capabilities: [80] Power Management version 2

# GDT-related dmesg output (2.6.23.12):

GDT-HA: Storage RAID Controller Driver. Version: 3.05
ACPI: PCI Interrupt 0000:03:01.0[A] -> GSI 24 (level, low) -> IRQ 17
GDT-HA: Found 1 PCI Storage RAID Controllers
Configuring GDT-PCI HA at 3/1 IRQ 17
GDT-HA 0: Name: SRCU42L
scsi0 : SRCU42L
scsi 0:0:0:0: Direct-Access     Intel    Host Drive  #00       PQ: 0 ANSI: 2
scsi 0:2:6:0: Processor         ESG-SHV  SCA HSBP M29     1.06 PQ: 0 ANSI: 2
sd 0:0:0:0: [sda] 143299800 512-byte hardware sectors (73369 MB)
sd 0:0:0:0: [sda] Assuming Write Enabled
sd 0:0:0:0: [sda] Assuming drive cache: write through
sd 0:0:0:0: [sda] 143299800 512-byte hardware sectors (73369 MB)
sd 0:0:0:0: [sda] Assuming Write Enabled
sd 0:0:0:0: [sda] Assuming drive cache: write through
  sda: sda1 sda2 < sda5 >
sd 0:0:0:0: [sda] Attached SCSI disk

# cat /boot/config-2.6.24 |grep GDT

CONFIG_SCSI_GDTH=y




Any ideas?

http://www.kernel.org/diff/diffview.cgi?file=%2Fpub%2Flinux%2Fkernel%2Fv2.6%2Fpatch-2.6.24.bz2 
show huge drivers/scsi/gdth* related changes.

Can't test at the moment. System went production.


Regards,
   Sven