Add new disk to the ASM diskgroup
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- After adding disk on the server.
[root@ol6 ~]# fdisk -l Disk /dev/sda: 32.2 GB, 32212254720 bytes 255 heads, 63 sectors/track, 3916 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x000bc539 Device Boot Start End Blocks Id System /dev/sda1 * 1 64 512000 83 Linux Partition 1 does not end on cylinder boundary. /dev/sda2 64 3917 30944256 8e Linux LVM Disk /dev/sdb: 4294 MB, 4294967296 bytes 255 heads, 63 sectors/track, 522 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x824e4e46 Device Boot Start End Blocks Id System /dev/sdb1 1 522 4192933+ 83 Linux Disk /dev/sdc: 4294 MB, 4294967296 bytes 255 heads, 63 sectors/track, 522 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x3b820f86 Device Boot Start End Blocks Id System /dev/sdc1 1 522 4192933+ 83 Linux Disk /dev/sdd: 524 MB, 524288000 bytes 255 heads, 63 sectors/track, 63 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0xfed4f385 Device Boot Start End Blocks Id System /dev/sdd1 1 63 506016 83 Linux Disk /dev/sde: 4294 MB, 4294967296 bytes 255 heads, 63 sectors/track, 522 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x00000000 Disk /dev/sde doesn't contain a valid partition table <===== New disk. No partition Disk /dev/mapper/vg_ol6-lv_root: 27.0 GB, 26952597504 bytes 255 heads, 63 sectors/track, 3276 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x00000000 Disk /dev/mapper/vg_ol6-lv_root doesn't contain a valid partition table Disk /dev/mapper/vg_ol6-lv_swap: 4731 MB, 4731174912 bytes 255 heads, 63 sectors/track, 575 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x00000000 Disk /dev/mapper/vg_ol6-lv_swap doesn't contain a valid partition table
- Call fdisk to partition it.
[root@ol6 ~]# fdisk /dev/sde
Device contains neither a valid DOS partition table, nor Sun, SGI or OSF disklabel
Building a new DOS disklabel with disk identifier 0xb05ec87f.
Changes will remain in memory only, until you decide to write them.
After that, of course, the previous content won't be recoverable.
Warning: invalid flag 0x0000 of partition table 4 will be corrected by w(rite)
WARNING: DOS-compatible mode is deprecated. It's strongly recommended to
switch off the mode (command 'c') and change display units to
sectors (command 'u').
Command (m for help): n
Command action
e extended
p primary partition (1-4)
p
Partition number (1-4): 1
First cylinder (1-522, default 1):
Using default value 1
Last cylinder, +cylinders or +size{K,M,G} (1-522, default 522):
Using default value 522
Command (m for help): w
The partition table has been altered!
Calling ioctl() to re-read partition table.
Syncing disks.
[root@ol6 ~]#
- Check newly-created paritions
[root@ol6 init.d]# ls -ltrh /dev/sd* brw-rw---- 1 root disk 8, 0 Jun 22 18:04 /dev/sda brw-rw---- 1 root disk 8, 2 Jun 22 18:04 /dev/sda2 brw-rw---- 1 root disk 8, 1 Jun 22 18:04 /dev/sda1 brw-rw---- 1 root disk 8, 16 Jun 22 18:05 /dev/sdb brw-rw---- 1 root disk 8, 32 Jun 22 18:05 /dev/sdc brw-rw---- 1 root disk 8, 48 Jun 22 18:05 /dev/sdd brw------- 1 oracle oinstall 8, 33 Jun 22 18:05 /dev/sdc1 brw------- 1 oracle oinstall 8, 17 Jun 22 18:05 /dev/sdb1 brw-rw---- 1 root disk 8, 49 Jun 22 18:05 /dev/sdd1 brw-rw---- 1 root disk 8, 64 Jun 22 18:07 /dev/sde brw-rw---- 1 root disk 8, 65 Jun 22 18:07 /dev/sde1
- Change ownership and permission
# chown oracle:oinstall /dev/sde1 # chmod 600 /dev/sde1
- Update the /etc/rc.local so permission will persist upon reboot.
# chown oracle:oinstall /dev/sde1 # chmod 600 /dev/sde1
- If this is the first time, configure oracleasm.
# service oracleasm configure
Configuring the Oracle ASM library driver.
This will configure the on-boot properties of the Oracle ASM library
driver. The following questions will determine whether the driver is
loaded on boot and what permissions it will have. The current values
will be shown in brackets (‘[]‘). Hitting <ENTER> without typing an
answer will keep that current value. Ctrl-C will abort.
Default user to own the driver interface []: oracle
Default group to own the driver interface []: oinstall
Start Oracle ASM library driver on boot (y/n) [n]: y
Scan for Oracle ASM disks on boot (y/n) [y]: y
Writing Oracle ASM library driver configuration: done
Initializing the Oracle ASMLib driver: [ OK ]
Scanning the system for Oracle ASMLib disks: [ OK ]
- Label the disks as ASM disks.
[root@ol6 init.d]# service oracleasm createdisk DG1B /dev/sde1 Marking disk "DG1B" as an ASM disk: [ OK ]
- Verify
[root@ol6 init.d]# service oracleasm listdisks DATA DG1 DG1B DG2
- Query in the _+ASM instance.
SQL> select path from v$asm_disk; PATH -------------------------------------------------------------------------------- /dev/oracleasm/disks/DG1B /dev/oracleasm/disks/DATA /dev/oracleasm/disks/DG2 /dev/oracleasm/disks/DG1
- Add new disk into the existing diskgroup.
SQL> alter diskgroup DG1 add disk '/dev/oracleasm/disks/DG1B'; Diskgroup altered.
