According to NOW, backing up from a snapshot should place the "real" path in /etc/dumpdates:
NOW: Knowledge Base: Data ONTAP: Backup and Recovery: Backing up the Filer to Tape: FAQ_575
Q: How do I dump an already-created snapshot?
A: Essentially, you only need to specify the snapshot in the dump path. For example, to dump the hourly.0 snapshot, run:
dump 0uf rst0a /vol/vol0/.snapshot/hourly.0/rest_of_path
In pre-Data ONTAP 5.1 releases, the /etc/dumpdates table entry will look like:
/vol/vol0/.snapshot/hourly.0/rest_of_path 0 Tue Jul 28 20:39:46 1998
In post-5.1 releases, the /etc/dumpdates table entry will look like:
/vol/vol0/rest_of_path 0 Tue Jul 28 20:39:46 1998
Note that if you are running a pre-multi-volume release (pre-5.0, in other words), the command will look like:
dump 0uf rst0a /.snapshot/hourly.0/rest_of_path
I'm running DOT 5.3D9. So am I doing something wrong, or is this just another example of bad documentation from NetApp?
blacklodge: ~ [635] # grep test /net/bonnie/vol/fs0/etc/dumpdates /vol/fs0/home/test 1 Mon Jun 21 23:49:09 1999 /vol/fs0/home/test 0 Sat Jun 19 01:29:01 1999 blacklodge: ~ [636] # blacklodge: ~ [636] # blacklodge: ~ [636] # grep test /net/bonnie/vol/fs0/etc/dumpdates /vol/fs0/home/test 1 Mon Jun 21 23:49:09 1999 /vol/fs0/home/test 0 Sat Jun 19 01:29:01 1999 /vol/fs0/.snapshot/hourly.0/home/test 0 Tue Jun 22 08:00:54 1999 blacklodge: ~ [637] #