Description of problem:
After installing kernel.2.6.18-1.2869.fc6 I can't mount RAID array.


Version-Release number of selected component (if applicable):
kernel.2.6.18-1.2869.fc6

I think, here main problem:
device-mapper: ioctl: 4.7.0-ioctl (2006-06-24) initialised: dm-devel 
device-mapper: table: device /dev/mapper/pdc_bdeigaaigj too small for target 
device-mapper: table: 253:3: linear: dm-linear: Device lookup failed 
device-mapper: ioctl: error adding target to table 

Jan 12 11:38:01 gw-312 kernel: md: md driver 0.90.3 MAX_MD_DEVS=256, 
MD_SB_DISKS=27 
Jan 12 11:38:01 gw-312 kernel: md: bitmap version 4.39 
Jan 12 11:38:02 gw-312 kernel: md: Autodetecting RAID arrays. 
Jan 12 11:38:02 gw-312 kernel: md: could not open unknown-block(8,1). 
Jan 12 11:38:02 gw-312 kernel: md: could not open unknown-block(8,17). 
Jan 12 11:38:02 gw-312 kernel: md: autorun ... 
Jan 12 11:38:02 gw-312 kernel: md: ... autorun DONE. 



[root@gw-312 /]# mdadm --create /dev/md0 --level=1 --raid-devices=2 /dev/sd[ab]
1 
mdadm: Cannot open /dev/sda1: No such device or address 
mdadm: Cannot open /dev/sdb1: No such device or address 
mdadm: create aborted 

root@gw-312 /]# fdisk -l 
Disk /dev/sda: 80.0 GB, 80026361856 bytes 
255 heads, 63 sectors/track, 9729 cylinders 
Units = cylinders of 16065 * 512 = 8225280 bytes 

Device Boot Start End Blocks Id System 
/dev/sda1 1 9729 78148161 fd  Linux raid autodetect

Disk /dev/sdb: 80.0 GB, 80026361856 bytes 
255 heads, 63 sectors/track, 9729 cylinders 
Units = cylinders of 16065 * 512 = 8225280 bytes 

Device Boot Start End Blocks Id System 
/dev/sdb1 1 9729 78148161 fd  Linux raid autodetect

[root@gw-312 /]# ls -la /dev | grep sda 
brw-r----- 1 root disk 8, 0 Янв 12 10:36 sda 
brwx------ 1 root root 8, 1 Янв 12 10:36 sda1

Trying to mount partition:  
[root@gw-312 mnt]# mount /dev/sda1 1 
mount: /dev/sda1 is not a valid block device


/var/log/messages

Jan 12 09:44:57 gw-312 kernel: SCSI device sda: 156301488 512-byte hdwr sectors 
(80026 MB) 
Jan 12 09:44:57 gw-312 kernel: sda: Write Protect is off 
Jan 12 09:44:57 gw-312 kernel: SCSI device sda: drive cache: write back 
Jan 12 09:44:57 gw-312 kernel: SCSI device sda: 156301488 512-byte hdwr sectors 
(80026 MB) 
Jan 12 09:44:57 gw-312 kernel: sda: Write Protect is off 
Jan 12 09:44:57 gw-312 kernel: SCSI device sda: drive cache: write back 
Jan 12 09:44:57 gw-312 kernel: sda: sda1 
Jan 12 09:44:57 gw-312 kernel: sd 0:0:0:0: Attached scsi disk sda 
Jan 12 09:44:57 gw-312 kernel: SCSI device sdb: 156301488 512-byte hdwr sectors 
(80026 MB) 
Jan 12 09:44:57 gw-312 kernel: sdb: Write Protect is off 
Jan 12 09:44:57 gw-312 kernel: SCSI device sdb: drive cache: write back 
Jan 12 09:44:57 gw-312 kernel: SCSI device sdb: 156301488 512-byte hdwr sectors 
(80026 MB) 
Jan 12 09:44:57 gw-312 kernel: sdb: Write Protect is off 
Jan 12 09:44:57 gw-312 kernel: SCSI device sdb: drive cache: write back 
Jan 12 09:44:57 gw-312 kernel: sdb: sdb1 
Jan 12 09:44:57 gw-312 kernel: sd 1:0:0:0: Attached scsi disk sdb

Actual results:


Expected results:


Additional info:
With kernel.2.6.18-1.2798 all works fine!