On Sun, Nov 18, 2007 at 01:19:16AM -0800, Asim Kadav wrote: > I'm trying to read the ZFS MOS but unable to do so. The compression > field is set to 3 and does not change with zfs compression=off > <my_pool_name>. Does this compression have any effect on MOS? >
All metadata is compressed using LZJB because it tends to be quite compressable and the decreased I/O is usually a win for most workloads. Search for 'os_md_compress' to see how this is used. - Eric -- Eric Schrock, FishWorks http://blogs.sun.com/eschrock
