device mapper with Intel Embedded RAID
I have a new server with an Intel Embedded RAID Technology II chipset. I also have 6 disks attached to the RAID controller. I partitioned the disks to two: 1 disk for boot, and five disk as a RAID0 for storage. I installed Fedora 9 (2.6.25-14) and it works fine. It can detect the RAID device and makes the following device mapper entries in /dev/mapper:
ddf1_4c53492020202020808626820000000035acbde800000a28 // 1th disk
ddf1_4c53492020202020808626820000000035acbde800000a28p1 // p1 on 1th disk
ddf1_4c53492020202020808626820000000035acbde800000a28p2 // p2 on 1th disk
ddf1_4c53492020202020808626820000000035acbde800001450 // 2nd disk set
ddf1_4c53492020202020808626820000000035acbde800001450p1 // p1 on 2nd set
ddf1_4c53492020202020808626820000000035acbde800001450p2 // p2 on 2nd set
The problem starts when I boot the system with my own kernel which is 2.6.25. I built and configured my kernel with the same options as installed Fedora. I also built initrd the same as Fedora one (the contents are exactly the same). But when I boot the system with my kernel the device mapper is gone and I cannot see device mapper files. As a result I cannot see the RAID disks!
thanks for any help.
Last edited by rmir; 07-23-2008 at 02:44 PM.