lvremove will not remove a disk from a mounted ASM diskgroup

BY: Brian Fitzgerald

asm:

CREATE diskgroup
crashdummy
normal redundancy
disk
'ORCL:ASMDISK0044',
'ORCL:ASMDISK0045'
;

Diskgroup created.


rdbms:
SQL> startup force nomount
ORACLE instance started.

Total SYSTEM Global Area 1577058304 bytes
Fixed SIZE          2924832 bytes
Variable SIZE         503320288 bytes
DATABASE Buffers     1056964608 bytes
Redo Buffers           13848576 bytes

7> restore CONTROLFILE TO '+CRASHDUMMY' FROM '+FRARDBMS10/GP12102/CONTROLFILE/current.272.860076555';

grid:
[grid@stormking asm]$ asmcmd ls crashdummy/GP12102/CONTROLFILE/CURRENT.256.860537509
CURRENT.256.860537509

oracle:
initgp12102.ora:
*.control_files='+DATARDBMS10/GP12102/CONTROLFILE/current.300.860076553','+FRARDBMS10/GP12102/CONTROLFILE/current.272.860076555', '+crashdummy/GP12102/CONTROLFILE/current.256.860537509'

SQL> startup force
ORACLE instance started.

Total SYSTEM Global Area 1577058304 bytes
Fixed SIZE          2924832 bytes
Variable SIZE         503320288 bytes
DATABASE Buffers     1056964608 bytes
Redo Buffers           13848576 bytes
DATABASE mounted.
DATABASE opened.
SQL> show parameter control_files

NAME                     TYPE    VALUE
------------------------------------ ----------- ------------------------------
control_files                string  +DATARDBMS10/GP12102/CONTROLFI
                         LE/CURRENT.300.860076553, +FRA
                         RDBMS10/GP12102/CONTROLFILE/cu
                         rrent.272.860076555, +CRASHDUM
                         MY/GP12102/CONTROLFILE/CURRENT
                         .256.860537509

[root@stormking lvm]# lvremove -f -v vg_asm/lvasm0045
    USING logical volume(s) ON command line
    Archiving volume GROUP "vg_asm" metadata (seqno 122).
    Found volume GROUP "vg_asm"
    Removing vg_asm-lvasm0045 (252:46)
  device-mapper: remove ioctl ON  failed: Device OR RESOURCE busy
  device-mapper: remove ioctl ON  failed: Device OR RESOURCE busy

no asm errors
no rdbms errors