Dell PowerVault ME5 Series Storage System CLI Reference Guide

PDF

clear disk-metadata


Description	Clears metadata from leftover disks. For a leftover disk, the show disks command shows the Usage value LEFTOVR. CAUTION:Only use this command when all disk groups are online and leftover disks exist. Improper use of this command may result in data loss. NOTE:If you are uncertain whether to use this command, contact technical support for assistance. Each disk in a disk group has metadata that identifies the owning disk group, the other members of the disk group, and the last time data was written to the disk group. The following situations cause a disk to become a `leftover`: Disk group member timestamps do not match so the system designates members having an older timestamp as leftovers. A disk is not detected during a rescan, then is subsequently detected. When a disk becomes a leftover, the following changes occur: The disk health status becomes Degraded and its How Used state becomes LEFTOVR The disk is automatically excluded from the disk group, causing the disk group health status to become Degraded or Fault, depending on the RAID level. If spares are available, and the health of the disk group is Degraded, the disk group will use spares to start reconstruction. When reconstruction is complete, you can clear the metadata on the leftover disk. Clearing the metadata will change the disk health status to OK and its How Used state to AVAIL, making the disk available for use in a new disk group or as a spare. If spares are not available to begin reconstruction, or reconstruction has not completed, keep the leftover disk to recover its data. This command clears metadata from leftover disks only. If you specify disks that are not leftovers, the disks are not changed.
Minimum role	standard
Syntax	clear disk-metadata <disks> CAUTION:Contact technical support before clearing metadata from a disk that is a member of an offline or quarantined disk group, which could result in unrecoverable data loss. Recovery of an offline disk group must be done with help from technical support before metadata is cleared.
Parameters	<disks> The IDs of the leftover disks from which to clear metadata. For disk syntax, see Command syntax.
Examples	Clear metadata from leftover disk 1.1. # clear disk-metadata 1.1
See also	show disks