On Mon, 4 Sep 2006, Steven Frost wrote:
Hi, I was wondering if anybody uses rsync to keep a development database
in step with another system between 2 tru64 Unix Alpha boxes.
At present we use rcp after first putting the source data in read-only
(dbpause) mode.
But this copies every file regardless of whether any changes have been
made.
I think rsync copies changed files either by comparing datestamps and
file size, or doing block checksum comparison.
I use rsync with Unidata on Solaris without a hitch. I know others using
rsync on HPUX and AIX with similar success so I don't expect you'd have
any trouble. rsync is nearly flawless when copying changed data. About
the only trouble rsync runs into with U2 databases is if you have a file
that changed from static to dynamic hashing - rsync is really unhappy if
something that was a file becomes a directory (with the same name) or
vice-versa.
I've been using rsync to replicate our production database to other
servers (backup, testing) for several years. After the initial copy, it's
really fast. If you use rsync in conjunction with some sort of filesystem
snapshot, you can replicate with only a few seconds of downtime on your
production server.
Jeff Butera
Administrative Systems
Hampshire College
[EMAIL PROTECTED]
413-559-5556
"You're not right, Daddy"
my 3-year old showing her wisdom
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