How to extend disk space in Linux LVM

Environment
Quater rack Exadata

Problem
Limited disk space in the DB server.

[oracle@thordb02 ~]$ df -h
Filesystem                                           Size  Used   Avail       Use%   Mounted on
/dev/mapper/VGExaDb-LVDbSys1
                                                          30G  4.4G    24G       16%     /
/dev/sda1                                        124M   16M   102M     14%     /boot
/dev/mapper/VGExaDb-LVDbOra1
                                                         99G   12G    82G        13%    /u01
tmpfs                                                81G   192M   81G       1%     /dev/shm

However, "vgdisplay" shows that there are 403 GB free physical extends:

[root@exadata02~]# vgdisplay
  --- Volume group ---
  VG Name               VGExaDb
  System ID
  Format                lvm2
  Metadata Areas        1
  Metadata Sequence No  4
  VG Access             read/write
  VG Status             resizable
  MAX LV                0
  Cur LV                3
  Open LV               3
  Max PV                0
  Cur PV                1
  Act PV                1
  VG Size               557.62 GB
  PE Size               4.00 MB
  Total PE              142751
  Alloc PE / Size       39424 / 154.00 GB
  Free  PE / Size       103327 / 403.62 GB
  VG UUID               97W2L1-SnRc-MyS2-UvNJ-hkiB-df6t-b0SdWf


Solution
I followed instructions found in this article to extend the free disk space in the server, here are the commands I used:
1 lvcreate --name u02 --size 400g VGExaDb
2 mkfs.ext3 /dev/VGExaDb/u02
3 mount /dev/VGExaDb/u02 /u02
4 Edit /etc/fstab file to add /u02 so that when server reboots, /u02 will be automatically mounted.

References

1. A Beginner's Guide To LVM - Page 2
2. Extending a logical volume
3. Linux Logical Volume Manager Walkthrough
4. Can I run fsck or e2fsck when Linux file system is mounted?
5. Extending a Logical Volume
6. Logical Volume Manager: How can I extend a Volume Group?
7. Quick HOWTO : Ch27 : Expanding Disk Capacity
8. The Linux Logical Volume Manager

EXADATA: How to obtain key information like serial numbers [ID 748983.1]

EXADATA: How to obtain key information like serial numbers [ID 748983.1]
Following was copied from the above note:

[root ~]# dmidecode -s system-product-name
ProLiant DL360 G5
[root ~]# dmidecode -s system-serial-number
USE835NAJG

Another option will be generating a file with the data generated by command dmidecode and uploading the file to the Service Request.

#dmidecode > `hostname`_dmidecode.txt

Exadata Related Oracle Notes

Oracle Sun Database Machine Setup/Configuration Best Practices [ID 1067527.1] Exadata V2 Starter Kit [ID 1244344.1] Contents 1.     Executive Summary. 1 1.     Exadata Specific Best Practices. 3 A.        Exadata Oracle Technology Network References  3 B.        Database Machine and Exadata Storage Server Patching. 3 C.        Performance Best Practices. 3 D.     High Availability Best Practices. 3 E.        Diagnosability and Troubleshooting Best Practices. 3 F.        Migration Best Practices. 3 G.        Manageability Best Practices. 3 H.        Security Best Practices. 3 I.        Backup Best Practices. 3 J.        Enterprise Manager Best Practices. 4 K.     Best Practices for Data Warehousing on the Oracle Database Machine. 4 L.        Exadata Setup / Configuration  4 2.     Oracle Database General Best Practices. 5 A.        General 5 B.        Machine and OS Configuration  5 C.     OS Network Configuration  5 D.        Cluster Configuration  6 E.        General Cluster Information  6 F.        Extended/Stretch Cluster 7 G.        Database Network Configuration  7 H.        Database Configuration  8 I.      Grid Infrastructure/ASM, RDBMS, and Storage Cell Patching / Maintenance Requirements  10 J.        Database Configuration Parameter File  10 3.     RAC Platform Generic Highlighted Recommendations, Best Practices, and References. 12 A.        Highlighted Recommendations. 12 B.     RAC Platform Generic Best Practices. 12 1.        Hardware  12 2.        Operating System.. 15 3.        Oracle  15 4.     IT Best Practices  20 C.        Maximum Availability Architecture  21 D.     RAC Technology References  22 1.        Oracle Product Documentation  22 2.        My Oracle Support, and Oracle Technology Network References  22 4.     RAC on Linux Highlighted Recommendations, Best Practices, and References. 25 A.     RAC on Linux Best Practices. 25 1.        Hardware  25 2.        Operating System.. 25 B.     RAC on Linux Platform Specific References  27 6.  RAC Performance Tuning Recommendations. 28 7.  RAC Related E-Business Recommendations & References. 31 A.  RAC Related E- Business Recommendations. 31 B.  RAC Related E-Business References. 31 8.  Appendix A - Storage. 32

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