• LVM provides reduced level of performances when compared to non-LVM file system, which confirms H1.
• Decrease in performances highly depends on the complexity of LVM configuration, thus confirming
H3. LVM shows greater loading and weaker performance if realized in a more complex way, meaning that if an LVM is created from several different volumes it is possible to achieve significantly lower performances. It is also expected that the performances will further decrease if a LVM is created from volumes located on different physical disks, which was not directly tested in this paper and will be discussed in some further work.
• The performance decrease depends directly on the workload, number of the required disk operations, metadata operations and number of direct file block operations (confirmation of the H4 hypothesis).
• The main cause of the noticed performance decline is the feature of remapping. The remapping in the case of the LVM is performed by the DMD. This procedure is weakly compensated by the remapping caching. The obtained results confirm the H2 hypothesis.