> Scott, > Thanks for the insight. > > I think our problem is item 2, residual data. The volumes were cleanly > formatted for use with z/VM and Linux, but over time, files are deleted and > new ones are allocated within ext2fs, and we suspect that this file system > is not "zero-ing out" the deleted files. In other words, if we created a > 10GB file system, and filled it with files, then deleted all but one file, > the RVA would still think there is 10GB of data, because none of it was > zeroed-out. > > On z/OS, the ERASE ON SCRATCH option zeros-out the tracks containing data, > so that hardware compression can take advantage of this.
man chattr chattr +s ... I'm not sure I believe all the man page says though. Any comments on the compression Alan? -- Cheers John Summerfield Microsoft's most solid OS: http://www.geocities.com/rcwoolley/ Note: mail delivered to me is deemed to be intended for me, for my disposition. ============================== If you don't like being told you're wrong, be right!
