[plug] Tar Problem

[Ronaldo Chan]

Pluggers,       Today we backup our postgres database using tar       tar czvf backup.tar.gz /dbms/data without problem, but     when i try to extract the archive it give's me an error     tar: ../pgdata.7.1.3/base/18721/16579: Member name contains `..' ../pgdata.7.1.3/base/18721/16600 tar: ../pgdata.7.1.3/base/18721/16600: Member name contains `..' ../pgdata.7.1.3/base/18721/16617 tar: ../pgdata.7.1.3/base/18721/16617: Member name contains `..' ../pgdata.7.1.3/base/18721/16642 tar: ../pgdata.7.1.3/base/18721/16642: Member name contains `..' ../pgdata.7.1.3/base/18721/16653 tar: ../pgdata.7.1.3/base/18721/16653: Member name contains `..' ../pgdata.7.1.3/base/18721/16685 tar: ../pgdata.7.1.3/base/18721/16685: Member name contains `..' ../pgdata.7.1.3/base/18721/16867 tar: ../pgdata.7.1.3/base/18721/16867: Member name contains `..' ../pgdata.7.1.3/base/18721/16934 tar: ../pgdata.7.1.3/base/18721/16934: Member name contains `..' ../pgdata.7.1.3/base/18721/16948 tar: ../pgdata.7.1.3/base/18721/16948: Member name contains `..'   Any idea would really appreciated