MetroCluster IP—磁盘擦除奇偶校验不一致

• MetroCluster IP
• ONTAP 9

• RAID擦除会发现RAID写入签名不一致
• 在写入签名不一致之前、系统会针对单个磁盘报告错误：
  • Thu Feb 24 01:09:21 +0100 [ClusterA-01: scsi_cmdblk_strthr_admin: scsi.cmd.checkCondition:error]: Disk device 0m.i2.3L16: Check Condition: CDB 0x28:02ea9c00:0200: Sense Data SCSI:recovered error -  (0x1 - 0x17 0x6 0x0)(1313).
  • Thu Feb 24 01:40:46 +0100 [ClusterA-01: disk_server_0: disk.ioMediumError:notice]: Medium error on disk 0m.i2.3L16: op 0x28:0bd0c600:0200 sector 198231552 SCSI:medium error - Unrecovered read error - If the disk is in a RAID group, the subsystem will attempt to reconstruct unreadable data (3 11 1 0) (1340) Disk 0m.i2.3L16 Shelf 10 Bay 16 [NETAPP   X342_TA15E1T2A10 NA01] S/N [000000000000]
• 磁盘的glist计数器较高、并且正在增加：

ClusterA::> storage show disk -a
...

Disk: 0m.i2.3L16
Shelf: 10 
Bay: 16
Serial: 000000000000
Vendor: NETAPP  
Model: X342_TA15E1T2A10
Rev: NA01
RPM: 10000
WWN: 0:000:000000:000000
UID: 00000000:00000000:...
Downrev: no
Pri Port: A
Sec Name: 0m.i2.3L16
Sec Port: A
Power-on Hours: 10001
Blocks read:    295795042831
Blocks written:   4682443306
Time interval: 355:03:24
Glist count: 376
Scrub last done: 40:19:24
Scrub count: 6
Dynamically qualified: No
Power cycle count: 0
Power cycle on error: 0
Current owner: 000000000
Home owner: 000000000
Reservation owner: 000000000