> How does ZFS handle snapshots of large files like VM images? Is > replication done on the bit/block level or by file? In otherwords, does > a snapshot of a changed VM image take up the same amount of space as the > image or only the amount of space of the bits that have changed within > the image?
ZFS uses Copy On Write to implement snap shots. No replication is done. When changes are made only the blocks changed are different (the originals are kept by the snapshot). Neil. _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
