ASM共享磁盘出现坏块，大神看看还有救吗？

ALLSTARS_ORACLE

oracle rac集群突然挂掉了，无法重启，查看日志发现diskgroup "DATA" does not exist or is not mounted，
在ASMCMD下用ls发现没有任何文件了，查看ASM告警日志，发现昨晚11点突然报错，日志如下：
Tue Nov 24 23:00:21 2015
WARNNING: cache read a corrupted block group=DATA dsk=0 blk=48 from disk 0
NOTE: a corrupted block from group DATA was dumped to /u01/gridbase/diag/asm/+asm/+ASM1/trace/+ASM1_ora_9989.trc
WARNNING: cache read(retry) a corrupted block group=DATA dsk=0 blk=48 from disk 0
ERROR: cache failed to read group=DATA dsk=0 blk=48 from disk(s): 0 DIS1
ORA-15196: invalid ASM block header [kfc.c:23924] [endian_kfbh] [2147483648] [48] [0 != 1]
ORA-15196: invalid ASM block header [kfc.c:23908] [endian_kfbh] [2147483648] [48] [0 != 1]
ORA-15196: invalid ASM block header [kfc.c:23924] [endian_kfbh] [2147483648] [48] [0 != 1]
ORA-15196: invalid ASM block header [kfc.c:23908] [endian_kfbh] [2147483648] [48] [0 != 1]
System State dumped to trace file /u01/gridbase/diag/asm/+asm/+ASM1/trace/+ASM1_ora_9989.trc
NOTE: AMDU dump of disk group DATA created at /u01/gridbase/diag/asm/+asm/+ASM1/trace
NOTE: cache initiating offline of disk 0 group DATA
NOTE: process 9989 initiating offline of disk 0.2542275145 (DIS1) with mask 0x7e in group 1
WARNING: Disk DIS1 in mode 0x7f is now being taken offline
NOTE: initiating PST update: grp = 1, dsk = 0/0x97880a49, mode = 0x15
kfdp_updateDsk(): 5
Tue Nov 24 23:00:24 2015
kfdp_updateDskBg(): 5
ERROR: too many offline disks in PST (grp 1)
WARNING: Disk DIS1 in mode 0x7f offline aborted
Tue Nov 24 23:00:24 2015
NOTE: halting all I/Os to diskgroup DATA
NOTE: active pin 0x0x6d174830 found in
NOTE: active pin 0x0x6d174940 found in
NOTE: active pin 0x0x6d174b60 found in
NOTE: active pin 0x0x6d174d80 found in
NOTE: active pin 0x0x6d174a50 found in
NOTE: active pin 0x0x6d174c70 found in
Tue Nov 24 23:00:24 2015
SQL> alter diskgroup DATA dismount force /* ASM SERVER */
NOTE: cache dismounting (not clean) group 1/0xC5E8FAB8 (DATA)
Tue Nov 24 23:00:25 2015

貌似是IPSAN共享磁盘出现坏块，求大神看看 还有救吗？