PRIMECLUSTER Global Disk Services Configuration and Administration Guide 4.1 (Solaris(TM) Operating System)

2.7.2.5 Shadow Slice

A shadow slice is a component of a shadow volume. A shadow volume of the mirror type consists of one or more mirrored shadow slices. A shadow volume of the single type, stripe type, or concatenation type consists of one shadow slice. A shadow slice is the shadow object corresponding to a logical slice that is an SDX object.

Independent access to a shadow slice detached from a shadow volume of the mirror type is unsupported.

When logical slices and shadow slices do not have to be classified particularly, they may be called "slices" collectively.

 

Attributes

A shadow slice has the following attributes.

Name

This attribute identifies the shadow slice within a shadow class.

 

Operation

Status Display

The slice status can be displayed with the sdxinfo command.

For details on GDS Management View, see "Viewing Configurations and Monitoring Statuses."

 

Status

ACTIVE

Data is accessible.

Here, the shadow volume is in the ACTIVE status. The total number of shadow slices in the ACTIVE or STOP status within a shadow volume of the mirror type indicates the present multiplicity of the mirroring configuration (1 to 8).

STOP

Data is inaccessible.

Here, the shadow volume is in the STOP status. The total number of shadow slices in the ACTIVE or STOP status within a shadow volume of the mirror type indicates the present multiplicity of the mirroring configuration (1 to 8).

INVALID

Data is inaccessible due to an I/O error.

When an I/O error is detected in a mirrored shadow slice, the shadow slice becomes INVALID.

For details, see "Slice Status Abnormality."