公开(公告)号：GB2531295A

公开(公告)日：2016-04-20

申请号：GB201418219

申请日：2014-10-15

Applicant: IBM

Inventor： HAUSTEIN NILS ,  STEINHAUER SABINE ,  PRAUSE THOMAS ,  UHL ANDREAS ,  MUELLER-WICKE DOMINIC

IPC: G06F11/20 ,  G06F11/14

Abstract: A data management system 10 comprises file system 110 controlling access by database application 119 to database container file 115 stored in first storage 121, backup client 110 connected to remote backup server 120, where a first version (801v1 in Figure 8) of the container file is saved, and a first inode comprising information on data blocks of the first version of the container file. The method comprises: creating a change tracking table 130-131 (803 in Figure 8) for the container file, and repeatedly adding an entry upon detecting an access to a data block, where the entry comprises an indication 146 of the data block and information 148 indicating the type of access, including at least one of read and write; pausing application execution; performing a snapshot of a storage volume containing the file system and container file in second storage 122; resuming the application; mounting the snapshot storage volume; recreating the file system in second storage; identifying entries 144 in the table associated with a write access; copying the associated data to the backup server; and updating the first inode, obtaining a second inode. A journaling function may be used for detecting an access. Incremental backup is facilitated.