Hello David,
Thanks for your confirmation of the problems. I have a few suggestions for you:
1. Talk to Bacula Systems. They give Universities very nice
discounts, and they do have client initiated backup. Bacula
Systems has by default a subscription model, but certain customers
prefer a one time purchase, which is possible.
2. If that is not an option, please let me know, and I will check
with Bacula Systems for some pointers. I have not personally used
this feature but helped design it. I believe it is already in
Bacula community, but if it is not, then it surely will be
available in the next version (probably around the end of the
year).
Best regards,
Kern
On 6/12/20 7:39 PM, David Brodbeck
wrote:
--On Wed, Jun 10, 2020 at 8:41 AM Josh Fisher <jfis...@jaybus.com> wrote:I still feel that Bacula's design is correct. Yes, 802.3az changes the
always-on nature of a connection, allowing either side to temporarily
power down its transmitter to save energy, but the standard itself
doesn't change the original goal of a persistent connection. It is the
switch firmware and/or NIC device drivers that claim to support it, but
do not. It makes sense for Bacula to be as robust as possible, but this
is not a Bacula design flaw. It is a work-around for buggy hardware.
I've also run into this when trying to back up over a VPN. The backup time can easily exceed the VPN's maximum session time.
It's fair to argue that both NAT routers and VPNs are a corruption of TCP/IP's design intent, but it doesn't seem likely we'll be rid of them any time soon. Bacula doesn't work very well with either. Besides the connection drop issues, I haven't yet gotten client-initiated backups to work from behind a NAT, and I haven't found anyone who's confirmed they have it working, either.
None of this, of course, is an issue when backing up always-on servers with static IPs -- which is Bacula's focus. The problems come in when it's used to back up endpoints. Unfortunately I haven't yet found anything else to use for that that lets me control my own data and isn't a subscription model. (In academic departments, it's much easier to find money for one-time expenses than it is to find a consistent source of it.)
David BrodbeckSystem Administrator, Department of MathematicsUniversity of California, Santa Barbara
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