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MetroCluster IP - DISK SCRUB PARITY INCONSISTENCY

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Category:
metrocluster
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Applies to

  • MetroCluster IP
  • ONTAP 9

Issue

  • RAID scrubs find RAID write signature inconsistencies
  • Just prior to the write signature inconsistencies errors are reported against a single disk:
    • 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]
  • The disk has a high glist counter that is increasing:

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

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