HP NonStop NS manual Recovery Operations for a Down Disk or Down Disk Path, Reset Disk $volume

Disk Drives: Monitoring and Recovery	Recovery Operations for a Down Disk or Down Disk
	Path

Recovery Operations for a Down Disk or Down Disk Path

To restart a disk or disk path:

1.If a path is down due to a ServerNet fabric failure, determine the affected paths. From an SCF prompt:

-> STATUS DISK $*-*, SUB MAGNETIC

The output indicates:

•

•

•

$DATA06-M and $DATA06-MB are stopped in the DOWN substate. $WD8-M and $WD8-MB are stopped in the HARDOWN substate. $DATA00-P and $DATA00-B are stopped in the HARDDOWN substate.

STORAGE - Status DISK \ALPHA12.$DATA06-*				Substate	Primary	Backup
LDev	Path	Status	State
116	PRIMARY	ACTIVE	STARTED		PID	PID
					0,285	1,268
116	BACKUP	INACTIVE	STARTED	DOWN	0,285	1,268
116	MIRROR	INACTIVE	STOPPED		0,285	1,268
116	MIRROR-BACKUP	INACTIVE	STOPPED	DOWN	0,285	1,268
STORAGE - Status DISK \ALPHA12.$WD8-*				Substate	Primary	Backup
LDev	Path	Status	State
96	PRIMARY	ACTIVE	STARTED		PID	PID
					0,23	1,12
96	BACKUP	INACTIVE	STARTED	HARDDOWN	0,23	1,12
96	MIRROR	INACTIVE	STOPPED		0,23	1,12
96	MIRROR-BACKUP	INACTIVE	STOPPED	HARDDOWN	0,23	1,12
STORAGE - Status DISK \ALPHA12.$DATA00-*				Substate	Primary	Backup
LDev	Path	Status	State
121	PRIMARY	INACTIVE	STOPPED	HARDDOWN	PID	PID
					0,284	1,267
121	BACKUP	INACTIVE	STOPPED	HARDDOWN	0,284	1,267
121	MIRROR	ACTIVE	STARTED		0,284	1,267
121	MIRROR-BACKUP	INACTIVE	STARTED		0,284	1,267
Total Errors = 0		Total Warnings = 9

2.Reset disk drives that are in the HARDDOWN substate. At an SCF prompt:

-> RESET DISK $volume

For example:

-> RESET DISK $WD8

Resetting a disk in the HARDDOWN substate places it in the DOWN substate.

3.Restart the disk. At an SCF prompt:

-> START DISK $volume

If the disk does not start, the disk might need replacement. If neither half of a mirrored volume starts, the database might need recovery. Contact your service provider.

HP Integrity NonStop NS-Series Operations Guide—529869-005

10-14