使用RMAN 将 FileSystem 迁移 ASM

把一个单实例File System存储的数据库迁移到ASM 管理的单实例环境,ASM采用ASMLib的方式。
OS环境: CentOS release 4.8

DB环境: Oracle 10gR2

下载相应的oracleasm.rpm包,注意最后一个必须要和你当前的OS内核一致。

[root@zhong mysql]# uname -r
2.6.9-89.EL
[root@zhong mysql]# rpm -qa|grep oracleasm
oracleasmlib-2.0.4-1.el4
oracleasm-support-2.1.7-1.el4
oracleasm-2.6.9-89.EL-2.0.5-1.el4
[root@zhong mysql]#

磁盘分区的步骤省略,这里我使用了6块磁盘,每块磁盘3个G

[root@zhong mysql]# ll /dev/sd* |grep -v sda
brw-rw---- 1 root disk 8, 16 Jan 7 22:05 /dev/sdb
brw-rw---- 1 root disk 8, 17 Jan 8 09:50 /dev/sdb1
brw-rw---- 1 root disk 8, 32 Jan 7 22:05 /dev/sdc
brw-rw---- 1 root disk 8, 33 Jan 8 09:51 /dev/sdc1
brw-rw---- 1 root disk 8, 48 Jan 7 22:05 /dev/sdd
brw-rw---- 1 root disk 8, 49 Jan 8 09:51 /dev/sdd1
brw-rw---- 1 root disk 8, 64 Jan 7 22:05 /dev/sde
brw-rw---- 1 root disk 8, 65 Jan 8 09:52 /dev/sde1
brw-rw---- 1 root disk 8, 80 Jan 7 22:05 /dev/sdf
brw-rw---- 1 root disk 8, 81 Jan 8 09:53 /dev/sdf1
brw-rw---- 1 root disk 8, 96 Jan 7 22:05 /dev/sdg
brw-rw---- 1 root disk 8, 97 Jan 8 09:53 /dev/sdg1
[root@zhong mysql]#

查询当前文件存放位置

SYS@joy:~>select name from v$datafile;
NAME
--------------------------------------------------------------------------------
/u01/app/oracle/oradata/joy/system01.dbf
/u01/app/oracle/oradata/joy/undotbs01.dbf
/u01/app/oracle/oradata/joy/sysaux01.dbf
/u01/app/oracle/oradata/joy/users01.dbf
/u01/app/oracle/oradata/joy/example01.dbf

SYS@joy:~>select name from v$tempfile;

NAME
--------------------------------------------------------------------------------
/u01/app/oracle/oradata/joy/temp01.dbf

SYS@joy:~>select name from v$controlfile;

NAME
--------------------------------------------------------------------------------
/u01/app/oracle/oradata/joy/control01.ctl
/u01/app/oracle/oradata/joy/control02.ctl
/u01/app/oracle/oradata/joy/control03.ctl

SYS@joy:~>select name from v$archived_log;

NAME
--------------------------------------------------------------------------------
/u01/app/oracle/flash_recovery_area/JOY/archivelog/2012_01_07/o1_mf_1_4_7jj67qm4_.arc

SYS@joy:~>select member from v$logfile;

MEMBER
--------------------------------------------------------------------------------
/u01/app/oracle/oradata/joy/redo03.log
/u01/app/oracle/oradata/joy/redo02.log
/u01/app/oracle/oradata/joy/redo01.log

SYS@joy:~>

配置ASM

[root@zhong mysql]# /etc/init.d/oracleasm configure
Configuring the Oracle ASM library driver.
This will configure the on-boot properties of the Oracle ASM library
driver. The following questions will determine whether the driver is
loaded on boot and what permissions it will have. The current values
will be shown in brackets ('[]'). Hitting without typing an
answer will keep that current value. Ctrl-C will abort.

Default user to own the driver interface []: oracle
Default group to own the driver interface []: dba
Start Oracle ASM library driver on boot (y/n) [n]: y
Scan for Oracle ASM disks on boot (y/n) [y]: y
Writing Oracle ASM library driver configuration: done
Initializing the Oracle ASMLib driver: [ OK ]
Scanning the system for Oracle ASMLib disks: [ OK ]
[root@zhong mysql]# /etc/init.d/oracleasm scandisks
Scanning the system for Oracle ASMLib disks: [ OK ]
[root@zhong mysql]# /etc/init.d/oracleasm status
Checking if ASM is loaded: yes
Checking if /dev/oracleasm is mounted: yes
[root@zhong mysql]#

创建ASM磁盘

[root@zhong ~]# /etc/init.d/oracleasm createdisk VOL1 /dev/sdb1
Marking disk "VOL1" as an ASM disk: [ OK ]
[root@zhong ~]# /etc/init.d/oracleasm createdisk VOL2 /dev/sdc1
Marking disk "VOL2" as an ASM disk: [ OK ]
[root@zhong ~]# /etc/init.d/oracleasm createdisk VOL3 /dev/sdd1
Marking disk "VOL3" as an ASM disk: [ OK ]
[root@zhong ~]# /etc/init.d/oracleasm createdisk VOL4 /dev/sde1
Marking disk "VOL4" as an ASM disk: [ OK ]
[root@zhong ~]# /etc/init.d/oracleasm createdisk VOL5 /dev/sdf1
Marking disk "VOL5" as an ASM disk: [ OK ]
[root@zhong ~]# /etc/init.d/oracleasm createdisk VOL6 /dev/sdg1
Marking disk "VOL6" as an ASM disk: [ OK ]
[root@zhong ~]#

[root@zhong ~]# /etc/init.d/oracleasm listdisks
VOL1
VOL2
VOL3
VOL4
VOL5
VOL6
[root@zhong ~]#

配置ASM实例,Oracle10g中使用ASM必须启动CSS进程。

[root@zhong ~]# /u01/app/oracle/product/10.2.0/db_1/bin/localconfig add
/etc/oracle does not exist. Creating it now.
Successfully accumulated necessary OCR keys.
Creating OCR keys for user 'root', privgrp 'root'..
Operation successful.
Configuration for local CSS has been initialized
Adding to inittab
Startup will be queued to init within 90 seconds.
Checking the status of new Oracle init process...
Expecting the CRS daemons to be up within 600 seconds.

CSS is active on these nodes.
zhong
CSS is active on all nodes.
Oracle CSS service is installed and running under init(1M)
[root@zhong ~]#

[oracle@zhong ~]$ ps -ef|grep css
root 15719 1 0 10:43 ? 00:00:00 /bin/su -l oracle -c sh -c 'cd /u01/app/oracle/product/10.2.0/db_1/log/zhong/cssd; ulimit -c unlimited; exec /u01/app/oracle/product/10.2.0/db_1/bin/ocssd '
oracle 15802 15719 0 10:44 ? 00:00:00 /u01/app/oracle/product/10.2.0/db_1/bin/ocssd.bin
oracle 15850 14466 0 10:45 pts/0 00:00:00 grep css
[oracle@zhong ~]$

创建ASM实例的pfile

[oracle@zhong dbs]$ cd /u01/app/oracle/product/10.2.0/db_1/dbs/
[oracle@zhong dbs]$ cat init+ASM.ora
instance_type=asm
large_pool_size=12M
remote_login_passwordfile=exclusive
asm_diskstring='ORCL:VOL*'
asm_diskgroups=dg1,dg2,recovery
background_dump_dest=/u01/app/oracle/admin/+ASM/bdump
core_dump_dest=/u01/app/oracle/admin/+ASM/cdump
user_dump_dest=/u01/app/oracle/admin/+ASM/udump
[oracle@zhong dbs]$

创建ASM实例的口令文件

[oracle@zhong ~]$ orapwd file=/u01/app/oracle/product/10.2.0/db_1/dbs/orapw+ASM entries=3 password=oracle
[oracle@zhong ~]$ ls $ORACLE_HOME/dbs/orapw*
/u01/app/oracle/product/10.2.0/db_1/dbs/orapw+ASM /u01/app/oracle/product/10.2.0/db_1/dbs/orapwjoy
[oracle@zhong ~]$

启动ASM实例,由于目前还没有创建任何磁盘组,所以暂时忽略这个错误

[oracle@zhong dbs]$ export ORACLE_SID=+ASM
[oracle@zhong dbs]$ sqlplus / as sysdba
SQL*Plus: Release 10.2.0.1.0 - Production on Sun Jan 8 10:57:24 2012

Copyright (c) 1982, 2005, Oracle. All rights reserved.

Connected to an idle instance.

SYS@+ASM:~>startup
ASM instance started

Total System Global Area 83886080 bytes
Fixed Size 1217836 bytes
Variable Size 57502420 bytes
ASM Cache 25165824 bytes
ORA-15110: no diskgroups mounted

SYS@+ASM:~>

创建ASM磁盘组,使用外部冗余

SYS@+ASM:~>create diskgroup dg1 external redundancy disk 'ORCL:VOL1','ORCL:VOL2';
Diskgroup created.

SYS@+ASM:~>create diskgroup dg2 external redundancy disk 'ORCL:VOL3','ORCL:VOL4';

Diskgroup created.

SYS@+ASM:~>create diskgroup recovery external redundancy disk 'ORCL:VOL5','ORCL:VOL6';

Diskgroup created.

手动mount ASM磁盘组

[oracle@zhong ~]$ export ORACLE_SID=+ASM
[oracle@zhong ~]$ sqlplus / as sysdba
SQL*Plus: Release 10.2.0.1.0 - Production on Sun Jan 8 11:19:29 2012

Copyright (c) 1982, 2005, Oracle. All rights reserved.

Connected to an idle instance.

SYS@+ASM:~>startup nomount
ASM instance started

Total System Global Area 83886080 bytes
Fixed Size 1217836 bytes
Variable Size 57502420 bytes
ASM Cache 25165824 bytes
SYS@+ASM:~>alter diskgroup all mount;

Diskgroup altered.

创建ASM实例spfile

SYS@+ASM:~>create spfile from pfile;
File created.

SYS@+ASM:~>shutdown immediate
ASM diskgroups dismounted
ASM instance shutdown
SYS@+ASM:~>startup
ASM instance started

Total System Global Area 83886080 bytes
Fixed Size 1217836 bytes
Variable Size 57502420 bytes
ASM Cache 25165824 bytes
ASM diskgroups mounted
SYS@+ASM:~>show parameter spfile

NAME TYPE
------------------------------------ ----------------------
VALUE
------------------------------
spfile string
/u01/app/oracle/product/10.2.0
/db_1/dbs/spfile+ASM.ora
SYS@+ASM:~>select name,state from v$asm_diskgroup;

NAME STATE
-------- --------
DG1 MOUNTED
DG2 MOUNTED
RECOVERY MOUNTED

SYS@+ASM:~>

使用RMAN备份数据库

[oracle@zhong ~]$ export ORACLE_SID=joy
[oracle@zhong ~]$ rman target /
Recovery Manager: Release 10.2.0.1.0 - Production on Sun Jan 8 11:22:15 2012

Copyright (c) 1982, 2005, Oracle. All rights reserved.

connected to target database: JOY (DBID=1667606455)

RMAN> backup as copy database format '+DG1';

Starting backup at 08-JAN-12
using target database control file instead of recovery catalog
allocated channel: ORA_DISK_1
channel ORA_DISK_1: sid=211 devtype=DISK
channel ORA_DISK_1: starting datafile copy
input datafile fno=00001 name=/u01/app/oracle/oradata/joy/system01.dbf
output filename=+DG1/joy/datafile/system.256.772024975 tag=TAG20120108T112250 recid=3 stamp=772024979
channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:15
channel ORA_DISK_1: starting datafile copy
input datafile fno=00003 name=/u01/app/oracle/oradata/joy/sysaux01.dbf
output filename=+DG1/joy/datafile/sysaux.257.772024985 tag=TAG20120108T112250 recid=4 stamp=772024988
channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:03
channel ORA_DISK_1: starting datafile copy
input datafile fno=00005 name=/u01/app/oracle/oradata/joy/example01.dbf
output filename=+DG1/joy/datafile/example.258.772024989 tag=TAG20120108T112250 recid=5 stamp=772024989
channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:03
channel ORA_DISK_1: starting datafile copy
input datafile fno=00002 name=/u01/app/oracle/oradata/joy/undotbs01.dbf
output filename=+DG1/joy/datafile/undotbs1.259.772024993 tag=TAG20120108T112250 recid=6 stamp=772024995
channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:03
channel ORA_DISK_1: starting datafile copy
input datafile fno=00004 name=/u01/app/oracle/oradata/joy/users01.dbf
output filename=+DG1/joy/datafile/users.260.772024997 tag=TAG20120108T112250 recid=7 stamp=772024997
channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:03
channel ORA_DISK_1: starting datafile copy
copying current control file
output filename=+DG1/joy/controlfile/backup.261.772024999 tag=TAG20120108T112250 recid=8 stamp=772024999
channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:01
channel ORA_DISK_1: starting full datafile backupset
channel ORA_DISK_1: specifying datafile(s) in backupset
including current SPFILE in backupset
channel ORA_DISK_1: starting piece 1 at 08-JAN-12
channel ORA_DISK_1: finished piece 1 at 08-JAN-12
piece handle=+DG1/joy/backupset/2012_01_08/nnsnf0_tag20120108t112250_0.262.772025001 tag=TAG20120108T112250 comment=NONE
channel ORA_DISK_1: backup set complete, elapsed time: 00:00:01
Finished backup at 08-JAN-12

RMAN>

使用asmcmd查看asm磁盘内容,可以看到数据文件已经backup copy到+DG1这个磁盘组中。

[oracle@zhong ~]$ export ORACLE_SID=+ASM
[oracle@zhong ~]$ asmcmd
ASMCMD> pwd
+
ASMCMD> ls
DG1/
DG2/
RECOVERY/
ASMCMD> cd dg1/joy/datafile
ASMCMD> pwd
+dg1/joy/datafile
ASMCMD> ls -l
Type Redund Striped Time Sys Name
DATAFILE UNPROT COARSE JAN 08 11:00:00 Y EXAMPLE.258.772024989
DATAFILE UNPROT COARSE JAN 08 11:00:00 Y SYSAUX.257.772024985
DATAFILE UNPROT COARSE JAN 08 11:00:00 Y SYSTEM.256.772024975
DATAFILE UNPROT COARSE JAN 08 11:00:00 Y UNDOTBS1.259.772024993
DATAFILE UNPROT COARSE JAN 08 11:00:00 Y USERS.260.772024997
ASMCMD>

修改闪回区路径和大小

[oracle@zhong ~]$ export ORACLE_SID=joy
[oracle@zhong ~]$ sqlplus / as sysdba
SQL*Plus: Release 10.2.0.1.0 - Production on Sun Jan 8 11:30:37 2012

Copyright (c) 1982, 2005, Oracle. All rights reserved.

Connected to:
Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Production
With the Partitioning, OLAP and Data Mining options

SYS@joy:~>alter system set db_recovery_file_dest_size=3g;

System altered.

SYS@joy:~>alter system set db_recovery_file_dest='+RECOVERY';

System altered.

SYS@joy:~>

修改omf和onlinelog创建的路径

SYS@joy:~>alter system set db_create_file_dest='+DG1';
System altered.

SYS@joy:~>alter system set db_create_online_log_dest_1='+DG1';

System altered.

SYS@joy:~>alter system set db_create_online_log_dest_2='+DG2';

System altered.

SYS@joy:~>

把redo log迁移到ASM里,drop原来的日志组

SYS@joy:~>select group#,member from v$logfile;
GROUP# MEMBER
---------- ----------------------------------------
3 /u01/app/oracle/oradata/joy/redo03.log
2 /u01/app/oracle/oradata/joy/redo02.log
1 /u01/app/oracle/oradata/joy/redo01.log

SYS@joy:~>alter database add logfile member '+DG1','+DG2' to group 1;
Database altered.

SYS@joy:~>alter database add logfile member '+DG1','+DG2' to group 2;

Database altered.

SYS@joy:~>alter database add logfile member '+DG1','+DG2' to group 3;

Database altered.

SYS@joy:~>alter system switch logfile;
System altered.

SYS@joy:~>alter database drop logfile member '/u01/app/oracle/oradata/joy/redo01.log';

Database altered.

SYS@joy:~>alter system switch logfile;

System altered.

SYS@joy:~>alter database drop logfile member '/u01/app/oracle/oradata/joy/redo02.log';

Database altered.

SYS@joy:~>alter system switch logfile;

System altered.

SYS@joy:~>alter database drop logfile member '/u01/app/oracle/oradata/joy/redo03.log';

Database altered.

SYS@joy:~>

再次查看redo log的路径

SYS@joy:~>select group#,member from v$logfile;
GROUP# MEMBER
---------- ----------------------------------------
1 +DG1/joy/onlinelog/group_1.263.772025879
1 +DG2/joy/onlinelog/group_1.256.772025883
2 +DG1/joy/onlinelog/group_2.264.772025891
2 +DG2/joy/onlinelog/group_2.257.772025891
3 +DG1/joy/onlinelog/group_3.265.772025895
3 +DG2/joy/onlinelog/group_3.258.772025901

6 rows selected.

SYS@joy:~>

把临时表空间迁移到ASM

SYS@joy:~>select file_name,tablespace_name from dba_temp_files;
FILE_NAME TABLESPACE_NAME
---------------------------------------- -------------------
/u01/app/oracle/oradata/joy/temp01.dbf TEMP

SYS@joy:~>alter tablespace temp add tempfile size 100m;

Tablespace altered.

SYS@joy:~>alter database tempfile '/u01/app/oracle/oradata/joy/temp01.dbf' drop;

Database altered.

SYS@joy:~>select file_name,tablespace_name from dba_temp_files;

FILE_NAME TABLESPACE_NAME
---------------------------------------- -------------------
+DG1/joy/tempfile/temp.266.772026681 TEMP

SYS@joy:~>

把controlfile和datafile迁移到ASM,注意操作顺序

SYS@joy:~>show parameter control_files
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
control_files string /u01/app/oracle/oradata/joy/co
ntrol01.ctl, /u01/app/oracle/o
radata/joy/control02.ctl, /u01
/app/oracle/oradata/joy/contro
l03.ctl
SYS@joy:~>

SYS@joy:~>alter system set control_files='+DG1/JOY/CONTROLFILE/control01','+DG2/JOY/CONTROLFILE/control02' scope=spfile;
System altered.

SYS@joy:~>shutdown immediate
Database closed.
Database dismounted.
ORACLE instance shut down.
SYS@joy:~>

SYS@joy:~>startup nomount
ORACLE instance started.
Total System Global Area 285212672 bytes
Fixed Size 1218992 bytes
Variable Size 109053520 bytes
Database Buffers 171966464 bytes
Redo Buffers 2973696 bytes
SYS@joy:~>

[oracle@zhong ~]$ rman target=sys/oracle
Recovery Manager: Release 10.2.0.1.0 - Production on Sun Jan 8 12:16:12 2012

Copyright (c) 1982, 2005, Oracle. All rights reserved.

connected to target database: joy (not mounted)

RMAN> restore controlfile from '/u01/app/oracle/oradata/joy/control01.ctl';

Starting restore at 08-JAN-12
using target database control file instead of recovery catalog
allocated channel: ORA_DISK_1
channel ORA_DISK_1: sid=211 devtype=DISK

channel ORA_DISK_1: copied control file copy
output filename=+DG1/joy/controlfile/control01
output filename=+DG2/joy/controlfile/control02
Finished restore at 08-JAN-12

RMAN>
RMAN> alter database mount;

database mounted
released channel: ORA_DISK_1

RMAN>

RMAN> switch database to copy;
datafile 1 switched to datafile copy "+DG1/joy/datafile/system.256.772024975"
datafile 2 switched to datafile copy "+DG1/joy/datafile/undotbs1.259.772024993"
datafile 3 switched to datafile copy "+DG1/joy/datafile/sysaux.257.772024985"
datafile 4 switched to datafile copy "+DG1/joy/datafile/users.260.772024997"
datafile 5 switched to datafile copy "+DG1/joy/datafile/example.258.772024989"

RMAN>

由于现在的数据文件使用的是ASM磁盘组中的镜像拷贝,需要对数据库进行介质恢复

RMAN> recover database;
Starting recover at 08-JAN-12
allocated channel: ORA_DISK_1
channel ORA_DISK_1: sid=207 devtype=DISK

starting media recovery

archive log thread 1 sequence 5 is already on disk as file +RECOVERY/joy/archivelog/2012_01_08/thread_1_seq_5.256.772025957
archive log thread 1 sequence 6 is already on disk as file +RECOVERY/joy/archivelog/2012_01_08/thread_1_seq_6.257.772025995
archive log thread 1 sequence 7 is already on disk as file +RECOVERY/joy/archivelog/2012_01_08/thread_1_seq_7.258.772026029
archive log thread 1 sequence 8 is already on disk as file +RECOVERY/joy/archivelog/2012_01_08/thread_1_seq_8.259.772026043
archive log thread 1 sequence 9 is already on disk as file +RECOVERY/joy/archivelog/2012_01_08/thread_1_seq_9.260.772026053
archive log thread 1 sequence 10 is already on disk as file +RECOVERY/joy/archivelog/2012_01_08/thread_1_seq_10.261.772026061
archive log filename=+RECOVERY/joy/archivelog/2012_01_08/thread_1_seq_5.256.772025957 thread=1 sequence=5
archive log filename=+RECOVERY/joy/archivelog/2012_01_08/thread_1_seq_6.257.772025995 thread=1 sequence=6
archive log filename=+RECOVERY/joy/archivelog/2012_01_08/thread_1_seq_7.258.772026029 thread=1 sequence=7
archive log filename=+RECOVERY/joy/archivelog/2012_01_08/thread_1_seq_8.259.772026043 thread=1 sequence=8
media recovery complete, elapsed time: 00:00:03
Finished recover at 08-JAN-12

RMAN>
RMAN> alter database open;

database opened

RMAN>

OPEN数据库

SYS@joy:~>select name from v$datafile;
NAME
--------------------------------------------------------------------------------
+DG1/joy/datafile/system.256.772024975
+DG1/joy/datafile/undotbs1.259.772024993
+DG1/joy/datafile/sysaux.257.772024985
+DG1/joy/datafile/users.260.772024997
+DG1/joy/datafile/example.258.772024989

SYS@joy:~>select name from v$tempfile;

NAME
--------------------------------------------------------------------------------
+DG1/joy/tempfile/temp.266.772026681

SYS@joy:~>select name from v$controlfile;

NAME
--------------------------------------------------------------------------------
+DG1/joy/controlfile/control01
+DG2/joy/controlfile/control02

SYS@joy:~>select member from v$logfile;

MEMBER
--------------------------------------------------------------------------------
+DG1/joy/onlinelog/group_1.263.772025879
+DG2/joy/onlinelog/group_1.256.772025883
+DG1/joy/onlinelog/group_2.264.772025891
+DG2/joy/onlinelog/group_2.257.772025891
+DG1/joy/onlinelog/group_3.265.772025895
+DG2/joy/onlinelog/group_3.258.772025901

6 rows selected.

SYS@joy:~>select name from v$archived_log;

NAME
--------------------------------------------------------------------------------
+RECOVERY/joy/archivelog/2012_01_08/thread_1_seq_5.256.772025957
+RECOVERY/joy/archivelog/2012_01_08/thread_1_seq_6.257.772025995
+RECOVERY/joy/archivelog/2012_01_08/thread_1_seq_7.258.772026029
+RECOVERY/joy/archivelog/2012_01_08/thread_1_seq_8.259.772026043
+RECOVERY/joy/archivelog/2012_01_08/thread_1_seq_9.260.772026053
+RECOVERY/joy/archivelog/2012_01_08/thread_1_seq_10.261.772026061

6 rows selected.

SYS@joy:~>

SYS@joy:~>select b.NAME, b.STATE, a.MOUNT_STATUS, a.MODE_STATUS, a.PATH
2 from v$asm_disk a, v$asm_diskgroup b
3 where a.GROUP_NUMBER(+) = b.GROUP_NUMBER;
NAME STATE MOUNT_STATUS MODE_STATUS PATH
-------- ---------- ------------- ------------- ----------
DG1 CONNECTED OPENED ONLINE ORCL:VOL1
DG1 CONNECTED OPENED ONLINE ORCL:VOL2
DG2 CONNECTED OPENED ONLINE ORCL:VOL3
DG2 CONNECTED OPENED ONLINE ORCL:VOL4
RECOVERY MOUNTED

SYS@joy:~>