65087: Acronis Cyber Infrastructure: Warning ''CS has incorrect journalling settings''

use Google Translate

Symptoms

You get this warning:

CS configuration is not optimal.

CS<ID> on tier <N> has incorrect journalling settings.

Cause

This alert is aimed at notifying the user that a disk (CS) has different caching (journalling) settings than other disks in its tier. For example, one disk doesn’t have any caching, while all other disks in the tier use caching on SSD. It impacts on cluster performance, because CS without cache operates slower than CS with SSD cache. This alert can be considered as a performance warning. We recommend using the same caching configuration for all disks in a tier to reach the best performance.

A typical configuration where this error could occur is a cluster in which some nodes have SSD disks that are used for caching and some nodes don't have SSD. The best way is to install SSD disks on all nodes and recreate all CSs with caching on SSD.

If performance optimization is not required for your infrastructure or cluster is in middle of cache reconfiguration, you can ignore this alert.

Solution

Re-assign disk with correct caching settings to cluster.

To find the affected disk, use this command on any cluster node:

# vstorage -c <cluster_name> stat -n
where <cluster_name> is name of your cluster

Look for the CS which ID is specified in the error message and find the host to which it belongs.

For example:

Then, execute the following command (on the node found on the previous step) to find disk name to which the CS belongs:

# vstorage -c <cluster_name>  list-services
where <cluster_name> is name of your cluster

For example:

Having device name, gracefully release the disk in WebCP and assign it again with correct caching settings (same as for other disks in the tier).