[Ocfs-users] OCFS on Linux LVM?

[Geoffrey Hui]

Dear all,

This maybe one of the FAQs on OCFS. From Oracle's note : 237997.1 "Linux 
OCFS - Best Practice" point 5 "Calculating an OCFS Partition Size" it 
mentions:

OCFS supports partitions of up to 1Tb (tested). Since no volume 
management is built into OCFS, Oracle recommends enabling hardware raid 
support to create logical disk volumes of sufficient size. If hardware 
raid support is not available, a Logical Volume Manager (LVM) or 
Multi-Disk (MD) disk configuration can be employed depending on Linux 
distribution being used.

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And also from Oracle's note : 224586.1 "Oracle Cluster File System 
(OCFS) on RedHat AS - FAQ" :

*Q: 29. Can I create an OCFS filesystem over a LVM (Logical Volume 
Manager)?*

*A:* No,
LVM is not cluster aware, No tests have been performed using LVM, It may 
work, but it also may not.
Corruptions are likely to happen since they are not cluster aware software.

------------- end quote-------------

Seems a bit contradiction, and it also seems quite usual and normal for 
large database to have logical volumes created from several harddisks. 
Does it work ? If so, is it supported?

Thanks.

cheers,
geoff