Dr. Darrell Long

System and Method for Restoring a File System from Backups in the Presence of Deletions

U.S. Patent 6,938,056
August 2005View at Google Patents

Abstract

A system and associated method restore a file system from incremental backups in the presence of deletion, without restoring deleted files. This is accomplished by logging deletions in a deletion log. Using the deletion log, the system re-deletes the deleted files upon a restore operation to an incremental backup epoch. The system the logs deletions so that the files that were deleted and survived a backup epoch have their records logged. The activity log enables an incremental backup from a prior snapshot, and represents a point-in-time version of the file system. The system can either not restore the deleted files, or, alternatively, it can restore the deleted files and then re-deletes them.

BibTeX

@misc{Burns2005Restoring,
  author = {Randal Chilton Burns and Darrell D. E. Long and Robert Michael Rees},
  title  = {System and Method for Restoring a File System from Backups in the Presence of Deletions},
  note   = {U.S. Patent no. 6,938,056},
  month  = aug,
  year   = {2005}
}
View at Google Patents