On Sun, Feb 21, 2010 at 03:45:51PM +0800, Aiza wrote: > Dan Nelson wrote: > >In the last episode (Feb 21), Aiza said: > >>1. Using the -L flag to create a snapshot of the > >>live running file system. > >> > >>Does this mean that a complete copy of the file > >>system is written to .snap directory? > > > >No; that would be a "copy". Snapshots only copy blocks as they are > >modified > >on the parent filesystem, so their size is determined by how much data is > >modified since the snapshot was created. > > > So how does this interact with the dump process? > > Dump start reading and writing its dump file and as the live system > changes the changes are written to the .snap and when dump completes it > overwrites it dump with the changes from the .snap???
No. > > How does this process work in detail? Go back and read the good and quite complete description someone put in about how snapshotting works a while back in this thread. I think it was Matthew Seaman, but I don't remember for sure. ////jerry > _______________________________________________ > freebsd-questions@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org" _______________________________________________ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org"
