4.4. Monitoring Clients

By monitoring clients, you can check the status and health of servers that you use to access virtual machines. To monitor clients, use the vstorage -c <cluster_name> top command. For example:

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The command above shows detailed information about the stor1 cluster. The monitoring parameters for clients (highlighted in red) are as follows.

CLID
Client identifier (ID).
LEASES
Average number of files opened for reading/writing by the client and not yet closed, for the last 20 seconds.
READ
Average rate, in bytes per second, at which the client reads data, for the last 20 seconds.
WRITE
Average rate, in bytes per second, at which the client writes data, for the last 20 seconds.
RD_OPS
Average number of read operations per second the client made, for the last 20 seconds.
WR_OPS
Average number of write operations per second the client made, for the last 20 seconds.
FSYNCS
Average number of sync operations per second the client made, for the last 20 seconds.
IOLAT
Average/maximum time, in milliseconds, the client needed to complete a single IO operation, for the last 20 seconds.
HOST
Client hostname or IP address.