At 00:36 13-07-02, Tony Pearson wrote: >Do you know if there is an option in ext2fs to have deleted files >zeroed-out, such as for security purposes, which would benefit outboard >compression, or perhaps another Linux filesystem that has this feature?
We notice similar things on z/VM. Where specific utilities can find unallocated space and tell the back-end system to drop it, with SFS you have no way to tell whether a block is still in use. What we came up with is to run a job now and then that files most of the unused space with a single big file that is easy to compress (e.g. all blanks) and then remove that file again. I was told this did help SFS a lot. Rob
