Patent ID: 8402230

Claim:
A method comprising: detecting addition of a new nonvolatile machine-readable medium to a data storage pool of nonvolatile machine-readable media; preventing from being performed a first operation of a file system that requires a first parameter that identifies a logical indication of a location within the nonvolatile machine-readable media of the data storage pool for the file system, until logical indications of locations within the new nonvolatile machine-readable medium for the file system have been stored in the data storage pool of nonvolatile machine-readable media; allowing to be performed, prior to logical indications of locations within the new nonvolatile machine-readable medium being stored in the data storage pool of nonvolatile machine-readable media, a second operation of the file system that does not require a second parameter that identifies a logical indication of a location within the nonvolatile machine- readable media, wherein the second operation causes data to be written into the new nonvolatile machine-readable medium, wherein the logical indication of the location is required to enable recoverability of the first operation after a system crash and during a time period between a time when the new nonvolatile machine-readable medium is added to the data storage pool and a time when the logical indication of the location has been stored in the nonvolatile machine-readable media.