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OracleDB instance down caused by NetApp disk not ready and long CP

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ontap-9
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san
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Applies to

  • ONTAP 9
  • VMware ESXi 8.0.3
  • Oracle 11.2.0.4.0
  • RHEL 6.7
  • Fabric OS v9.1.1d
  • OracleDB running as VM guest

Issue

  • OracleDB instance down.
  • Linux kernel log shows multiple SCSI device resets:

sd 2:0:2:0: [sdl] SCSI device reset on scsi2:2
sd 1:0:0:0: [sdh] SCSI device reset on scsi1:0
sd 2:0:3:0: [sdm] SCSI device reset on scsi2:3
sd 1:0:1:0: [sdi] SCSI device reset on scsi1:1
sd 2:0:4:0: [sdn] SCSI device reset on scsi2:4

  • NetApp EMS log shows RAID group missing disk, reconstruction started, and repeated IO errors:
    • raid.rg.recons.missing: RAID group /nasontap13_aggr1/plex0/rg1 is missing 1 disk(s)
    • scsi.cmd.pastTimeToLive:error: Disk device 0a.01.10: request failed after try #1: cdb 0x2a:0d199c00:0200
    • disk.IO.status: SCSI:not ready - Drive spinning up
    • wafl.cp.toolong:error: Aggregate nasontap13_aggr1 experienced a long CP
  • VMware/OS logs show lost access to volume due to connectivity issues
  • OracleDB instance fails due to I/O errors and storage disconnect

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