Mattias Pantzare wrote:
O I feel like I understand what tar is doing, but I'm curious about what is it
that ZFS is looking at that makes it a successful incremental send? That
is, not send the entire file again. Does it have to do with how the
application (tar in this example) does a file open,
I'm using ZFS snapshots and send and receive for a proof of concept, and
I'd like to better understand how the incremental feature works.
Consider this example:
1. create a tar file using tar -cvf of 10 image files
2. ZFS snapshot the filesystem that contains this tar file
3. Use ZFS
O I feel like I understand what tar is doing, but I'm curious about what is it
that ZFS is looking at that makes it a successful incremental send? That
is, not send the entire file again. Does it have to do with how the
application (tar in this example) does a file open, fopen(), and what mode
