Allocated AU's: 773
Free AU's: 9463
AU's read for dump: 0
Block images saved: 0
Map lines written: 0
Heartbeats seen: 0
Corrupt metadata blocks: 0
Corrupt AT blocks: 0
------------------------ SUMMARY FOR DISKGROUP ASMDG -------------------------
Allocated AU's: 1553
Free AU's: 18919
AU's read for dump: 0
Block images saved: 0
Map lines written: 0
Heartbeats seen: 0
Corrupt metadata blocks: 0
Corrupt AT blocks: 0
************************* EXTRACTING FILE ASMDG.259 **************************
Creating file: ASMDG_259.f
Extraction wrote: 22290432 bytes
Stripe size: 1048576 bytes
Stripe columns: 1
Mirror copies: 1
Block size: 8192 bytes
File size: 2721 blocks
File type: 12
Extent size #1: 4294967295 extents of 1 AUs
Extent size #2: 0 extents of 1 AUs
Extent size #3: 0 extents of 1 AUs
Extent size #4: 4294967295 extents of 1 AUs
Creation time: 2014/06/01 19:03:04.399000
Modified time: 2014/07/21 17:00:00.000000
Data extents in file: 22
Data extents found: 22
Blocks not found: 0 blocks
******************************* END OF REPORT ********************************
[oracle@rac1 amdu_2014_07_21_17_45_08]$ rm -rf *
--mount
ASMCMD> mount asmdg
ASMCMD> lsdg
State Type Rebal Sector Block AU Total_MB Free_MB Req_mir_free_MB Usable_file_MB Offline_disks Voting_files Name
MOUNTED EXTERN N 512 4096 1048576 20472 18919 0 18919 0 N ASMDG/
[oracle@rac1 amdu_2014_07_21_17_45_08]$ amdu -extract ASMDG.259
amdu_2014_07_21_17_46_09/
AMDU-00204: Disk N0001 is in currently mounted diskgroup ASMDG
AMDU-00201: Disk N0001: 'ORCL:VOL1'
[oracle@rac1 amdu_2014_07_21_17_45_08]$ ll
total 4
drwxr-xr-x 2 oracle oinstall 4096 Jul 21 17:46 amdu_2014_07_21_17_46_09
[oracle@rac1 amdu_2014_07_21_17_45_08]$ cd *
[oracle@rac1 amdu_2014_07_21_17_46_09]$ ll
total 21804
-rw-r--r-- 1 oracle oinstall 22290432 Jul 21 17:46 ASMDG_259.f
-rw-r--r-- 1 oracle oinstall 5009 Jul 21 17:46 report.txt
[oracle@rac1 amdu_2014_07_21_17_46_09]$
听说：
asm磁盘元数据不可以损坏，不然，无法数据回复。
备份与维护
ASMCMD>
ASMCMD> md_backup /tmp/oradgbackup_20140721
Disk group metadata to be backed up: ASMDG
Current alias directory path: ASMDB/ONLINELOG
Current alias directory path: ASMDB
Current alias directory path: ASMDB/TEMPFILE
Current alias directory path: ASM/DATAFILE
Current alias directory path: ASMDB/DATAFILE
Current alias directory path: ASM/ASMPARAMETERFILE
Current alias directory path: ASMDB/PARAMETERFILE
Current alias directory path: ASM
Current alias directory path: ASMDB/CONTROLFILE
[oracle@rac1 ~]$ more /tmp/oradgbackup_20140721
@diskgroup_set = (
{
'ATTRINFO' => {
'TEMPLATE.PARAMETERFILE.MIRROR_REGION' => '0',
'TEMPLATE.TEMPFILE.REDUNDANCY' => '17',
'TEMPLATE.OCRBACKUP.REDUNDANCY' => '17',
'TEMPLATE.TEMPFILE.MIRROR_REGION' => '0',
'TEMPLATE.PARAMETERFILE.REDUNDANCY' => '17',
'SECTOR_SIZE' => '512',
'TEMPLATE.DATAGUARDCONFIG.REDUNDANCY' => '17',
'ACCESS_CONTROL.UMASK' => '066',
'TEMPLATE.ASM_STALE.STRIPE' => '0',
'TEMPLATE.ARCHIVELOG.STRIPE' => '0',
'TEMPLATE.DATAGUARDCONFIG.PRIMARY_REGION' => '0',
'TEMPLATE.OCRBACKUP.STRIPE' => '0',
'TEMPLATE.DATAFILE.STRIPE' => '0',
'AU_SIZE' => '1048576',
'TEMPLATE.ASMPARAMETERFILE.STRIPE' => '0',
'TEMPLATE.CHANGETRACKING.PRIMARY_REGION' => '0',
'TEMPLATE.CONTROLFILE.REDUNDANCY' => '17',
'TEMPLATE.FLASHFILE.STRIPE' => '0',
'TEMPLATE.BACKUPSET.PRIMARY_REGION' => '0',
'TEMPLATE.ARCHIVELOG.PRIMARY_REGION' => '0',
'TEMPLATE.CHANGETRACKING.STRIPE' => '0',
'TEMPLATE.ON