Viewing space occupied by data chunks

To view the total amount of disk space occupied by all user data in the cluster, run the vstorage top command and press the V key on your keyboard. Once you do this, your command output should look like the following:

# vstorage -c stor1 top
Cluster 'stor1': healthy
Space: [OK] allocatable 1.32TB of 1.44TB, free 1.39TB of 1.44TB
MDS nodes: 3 of 3, epoch uptime: 19d 23h, cluster version: 128
CS nodes:  3 of 3 (3 avail, 0 inactive, 0 offline), storage version: 128
License: ACTIVE (expiration: 01/10/2021, capacity: 10TB, used: 20.3GB)
Replication:  1 norm,  1 limit
Chunks: [OK] 323 (100%) healthy,  0 (0%) standby,  0 (0%) degraded,  0 (0%) urgent,
             0 (0%) blocked,  0 (0%) pending,  0 (0%) offline,  0 (0%) replicating,
             0 (0%) overcommitted,  0 (0%) deleting,  0 (0%) void
FS:  20.3GB in 757 files, 757 inodes,  244 file maps,  323 chunks,  889 chunk replicas
IO:       read     0B/s (  0ops/s), write     0B/s (  0ops/s)
IO total: read   37.1GB ( 473Kops), write  133.7GB ( 4.7Mops)
Repl IO:  read     0B/s, write:     0B/s
Sync rate:   0ops/s, datasync rate:   0ops/s
IO QDEPTH: 0.0 aver, 0.0 max
<...>

The FS field shows the size of all user data in the cluster without consideration for replicas.