Dell PowerVault ME5 Series Storage System CLI Reference Guide

clear cache


Description	Clears unwritable cache data from both controllers. NOTE:If you are uncertain whether to use this command, contact technical support for assistance. This data cannot be written to disk because it is associated with a volume that no longer exists or whose disks are not online. If the data is needed, the volume disks must be brought online. If the data is not needed it can be cleared, in which case it will be lost and data will differ between the host and disk. Unwritable cache is also called orphan data. CAUTION:Only use this command when all disk groups are online and accessible from the host. Clearing cache for a volume that is offline or quarantined could result in unrecoverable data loss. You can clear unwritable cache data for a specified volume or for all volumes
Minimum role	standard
Syntax	clear cache [volume <volume>]
Parameters	volume <volume> Optional. The name or serial number of a specific volume for which to clear unwritable cache data. A name that includes a space must be enclosed in double quotes. If this parameter is omitted, unwritable cache data is cleared for all volumes.
Examples	Clear unwritable cache data for volume V1 from both controllers. # clear cache volume v1
See also	show unwritable-cache show volumes