28 Mar
2018
28 Mar
'18
10:55 a.m.
On 03/28/2018 11:51 AM, David Brownlee via cctalk wrote:
A step up from rsync can be dirvish - it uses rsync,
but before each
backup it creates a hardlink tree of the previous backup, then rsyncs
over it. The net effect is you only pay the block cost of one copy of
unchanged files, plus an inode per copy. Can be very handy
I've used something like that with great success. - This is commonly
known as "Single Instance Store".
The only down side is that there is a single copy of the file, and if
something happens to it, the entire backup set is impacted.
This is easy to get around by periodically creating a new set backup set
that future days are hard linked against. (Play with the numbers to
match your preference.)
--
Grant. . . .
unix || die