NSS provides the following enhancements and changes in OES 2018 SP3:
Auto Discard: This feature discards the unused blocks automatically that are released by the pool. This functionality is supported on pools that reside completely on thin provisioned storage. This avoids user intervention to discard the unused blocks by executing the fstrim command.
The nss, nsscon, and nlvm utilities are updated with a new option (No)AutoDiscard to enable or disable the autodiscard feature for a given pool.
Device Agnostic: OES supports thin provisioning features (Fstrim, Auto Discard, and Blk_discard_on_delete) on all types of storage device drivers. The certified virtualized platforms by us are VMware, XEN, and KVM.
The following NSS utilities are enhanced to include --dst option by default:
rights
attrib
nssquota
nsschown
For more information, see man page of the corresponding utility.
The Linux utilities - mkdir, rmdir and mv are enhanced to support DST. Any operation performed on a directory in the Primary volume is replicated on the shadow volumes for these utilities.