We have Oracle ASM running under LVM and now I want to expand one of ASM disk group size, but I don't know which LVM filesystem is associated with specific ASM disk group. Is there a way to find out how many raw disk or LVM disk associated with ASM disk group?disk groupAn Oracle ASM disk group is a collection of disks that Oracle ASM manages as a unit. Within a disk group, Oracle ASM exposes a file system interface for Oracle Database files. The content of files that are stored in a disk group are evenly distributed, or striped, to eliminate hot spots and to provide uniform performance across the disks. Oracle ASM files may also be optionally mirrored within a disk group. The performance of disks in a disk group is comparable to the performance of raw devices.EDIT #1following are my disk group in ASM now EXDATA running out of space 99% used. I have enough space in LVM so i am planing to expend LVM disk but i don't know which LVM volume i should expend because there are many LVM disk/filesystem showing in lvdisplay command. [root@devserver ~]# /etc/init.d/oracleasm listdisksEXDATAEXLOGSTDATASTLOGPXDATAPXLOGOCRXDDATAXDLOGQuestion: How to find which LVM volume associated with EXDATA (asm)? so i can run lvextend on LVM volume and increase the size of EXDATA 
Oracle ASM disk group list
linux;lvm;oracle database
Nevermind i got my answer myself[root@devserver ~]# /sbin/blkid | grep oracleasm | grep EXDATA/dev/mapper/asmdataVG-asmdata01LV: LABEL=EXDATA TYPE=oracleasm