Exadata Disk Confinement TEST

Exadata The disk has been confined and is in an offline state

Error Description
Data hard disk entered confinement offline status. The LUN 0_7 changed status to warning - confinedOffline. CellDisk changed status to normal - confinedOffline. All subsequent I/Os on this disk are failed immediately. Confinement tests will be run on the disk to determine if the disk should be dropped

Checked the AlerHistory from the Cell

#cellcli -e list alerthistory

2_1 2018-07-27T01:56:15+02:00 warning "Data hard disk entered confinement offline status. The LUN 0_7 changed status to warning - confinedOffline. CellDisk changed status to normal - confinedOffline. All subsequent I/Os on this disk are failed immediately. Confinement tests will be run on the disk to determine if the disk should be dropped. Status : WARNING - CONFINEDOFFLINE Manufacturer : HGST Model Number : ST360057SSUN600F.0T Size : 8.0T Serial Number : 1604P1SN9V Firmware : PAG1 Slot Number : 7 Cell Disk : CD_07_p_cel02 Grid Disk : RECO_CD_07_p_cel02, DATA_CD_07_p_cel02, DBFS_DG_CD_07_p_cel02 Reason for confinement : service time is high relative to other disks with similar workloads"

And the Alert is cleared

2_2 2018-07-27T02:01:03+02:00 clear "Data hard disk status changed to normal. Status : NORMAL Manufacturer : HGST Model Number : ST360057SSUN600F.0T Size : 8.0TB Serial Number : 1604P1SN9V Firmware : PAG1 Slot Number : 7 Cell Disk : CD_07_p_cel02 Grid Disk : DATA_CD_07_p_cel02, DBFS_DG_CD_07_p_cel02, RECO_CD_07_p_cel02"

So we can see from the cell alert that the disk has been temporarily ring-fenced for testing and not because of media errors but because it exceeded a performance threshold. As you can see from the alert, it passed the test and was subsequently put back into a normal state.

No need for disk replacement and no further action required.

If you wish to further check and ensure just login to Cellcli and execute the below command to verify the status of physical/cell and grid disks

CellCLI> LIST PHYSICALDISK
CellCLI> list physicaldisk detail
CellCLI> list celldisk
CellCLI> list celldisk detail
CellCLI> list griddisk
CellCLI> list griddisk detail

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