After partition using fdisk, i can not see the new device file (/dev/sdd1)

Question

I used fdisk -l to partition /dev/sdd, use the entire disk as partition 1. it looks successful:
# fdisk -l /dev/sdd
Disk /dev/sdd: 10.7 GB, 10737418240 bytes
64 heads, 32 sectors/track, 10240 cylinders
Units = cylinders of 2048 * 512 = 1048576 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x35e3e2c4
Device Boot Start End Blocks Id System
/dev/sdd1 1 10240 10485744 83 Linux
the problem: i don't see the device file /dev/sdd1. tried to delete it and partition again, the same.
also tried
- mknod b 8 70 /dev/sdd1, to manually create it, but when i use oracleasm createdisk DISK2 /dev/sdd1, the command won't recognize manually crated /dev/sdd1.
- reboot the server,
- "partprobe" command, no luck.
in addition, cat /proc/partitions seems including /dev/sdd1:
cat /proc/partitions
major minor #blocks name
8 16 292935982 sdb
8 0 143338560 sda
8 1 512000 sda1
8 2 142825472 sda2
252 0 25608192 dm-0
252 1 25608192 dm-1
252 2 62423040 dm-2
252 3 35012608 dm-3
252 4 20480000 dm-4
252 5 10240000 dm-5
252 6 4096000 dm-6
8 32 10485760 sdc
8 33 10484736 sdc1
8 48 20971520 sdd
8 49 20971504 sdd1
8 64 10485760 sde
8 65 10485744 sde1
any advice?
Thanks as alwasy!
Edited by: 943714 on Apr 25, 2013 10:55 AM

Answer 1

After you create a new partition, always verify it:
# fdisk -l /path/to/diskOnce that confirms the new partition, you must tell the kernel to re-read the partition table. Several ways to do this, depending on what your storage connection is. This often works:
# partprobe /path/to/mydiskThen check if the kernel sees the partition:
# grep /proc/partitions mydiskIf it does, you are done.