[OpenAFS] fine-grained incrementals?

[John S. Bucy]

Here's some preliminary data.  I'm running the following against my 
mail volume hourly:

VOL='mail.bucy'
mv $VOL $VOL.old && \
vos backup $VOL && \
vos dump $VOL.backup -file $VOL && \
rdiff delta $VOL.sig $VOL $VOL-delta-`date +%Y%m%d.%H%M` &&
rdiff sig $VOL $VOL.sig && \
rm $VOL.old

Here's what's coming out:

 36M mail.bucy
960K mail.bucy-delta-20050201
 20K mail.bucy-delta-20050201.1558
108K mail.bucy-delta-20050201.1711
100K mail.bucy-delta-20050201.1818
 96K mail.bucy-delta-20050201.1918
140K mail.bucy-delta-20050201.2018
 56K mail.bucy-delta-20050201.2118
 72K mail.bucy-delta-20050201.2218
 96K mail.bucy-delta-20050201.2318
 68K mail.bucy-delta-20050202.0018
 88K mail.bucy-delta-20050202.0118
 80K mail.bucy-delta-20050202.0218
 36K mail.bucy-delta-20050202.0318
 92K mail.bucy-delta-20050202.0418
 88K mail.bucy-delta-20050202.0518
 88K mail.bucy-delta-20050202.0618
124K mail.bucy-delta-20050202.0718
 68K mail.bucy-delta-20050202.0818
100K mail.bucy-delta-20050202.0918
132K mail.bucy-delta-20050202.1018
120K mail.bucy-delta-20050202.1118
208K mail.bucy-delta-20050202.1218
 68K mail.bucy-delta-20050202.1318
 72K mail.bucy-delta-20050202.1418
212K mail.bucy.sig


This is all maildir so the traffic is going to be mostly creates,
renames and deletes -- few appends/updates.  Nevertheless, the deltas
are pretty small...




john