Hi,
>> I am starting from basics
To Provide ASM disk , we can use RAW DISKS or BLOCK DISKS.
>> Is this right ?
If we go for RAW DEVICES, we need to bound RAW DEVICES with BLOCK DEVICES via a Process called binding.
e.g # raw /dev/raw/raw1 /dev/sdb1
If we go for block devices , do we need to use ASMLIB SW ?
# ls -l /dev/sdb*
brw-r----- 1 root disk 8, 16 Jul 31 03:10 /dev/sdb
brw-r----- 1 root disk 8, 17 Jul 31 03:17 /dev/sdb1
[root@CATALOG ~]# ls -l /dev/sdc*
brw-r----- 1 root disk 8, 32 Jul 31 03:12 /dev/sdc
brw-r----- 1 root disk 8, 33 Jul 31 03:17 /dev/sdc1
[root@CATALOG ~]# ls -l /dev/sde*
brw-r----- 1 root disk 8, 64 Jul 31 03:16 /dev/sde
brw-r----- 1 root disk 8, 65 Jul 31 03:17 /dev/sde1
[root@CATALOG ~]# ls -l /dev/sdd*
brw-r----- 1 root disk 8, 48 Jul 31 03:14 /dev/sdd
brw-r----- 1 root disk 8, 49 Jul 31 03:17 /dev/sdd1
>> My questions
1) I want to know how block devices and Raw devices are useful to provide ASM disks ?
2) Simply Block devices Vs Raw devices in ASM -
3) How they are behaving different with each other in ASM storage ?
Thanks a lot