Question for Jeff:
I know this is an old thread (and still in my archives!), but I'm wondering
if this worked for you?
I have a similar situation - I have a laptop that needs to be backed up. I
currently have it configured for wired backups, but the user more often
uses wifi (DMZ) and then VPN's into the network. If the symlink method
works out, I can issue a static IP via the VPN.
Thanks,
-Kris
Kris Lou
[email protected]
On Mon, Jan 16, 2012 at 3:44 PM, Jeffrey J. Kosowsky
<[email protected]>wrote:
> Jeffrey J. Kosowsky wrote at about 17:00:45 -0500 on Monday, January 16,
> 2012:
> > The laptops I back up have both a wired and wireless Ethernet
> > connection with (different) MAC addresses.
> >
> > I use static DNS so that when the laptops are attached at home they
> > are given a fixed (known) IP address so that BackupPC can find them
> > using my /etc/hosts file.
> >
> > On my old D-Link router, I used to assign the same static DNS address
> > to both MAC addresses so that no matter which connection was used, I
> > had the same fixed IP address.
> >
> > The problem is that my new Verizon router does not allow the same IP
> > address to be correlated with different MAC addresses.
> >
> > So now it seems that I can only match the laptop name (used by
> > BackupPC) against only one of the IP addresses so that it will only
> > get backed up on one of the two interfaces?
> >
> > Is there any simple way to overcome this problem?
> >
> > For example would it be possible to match 2 IP/names addresses against
> > the same host backup so that if one fails then it tries the other?
> > (this is in a sense the opposite of ClientNameAlias that allows you to
> > map multiple hosts to one IP address)
> >
>
> Just was thinking that the following simple hack should probably
> work...
>
> 1. Set up two different static IPs, one for each network interface.
> 2. Enter both IPs (or equivalent names as defined in /etc/hosts) in
> the BackupPC/hosts file -- call them 'hostA' and 'hostB'
> 3. Create a *symlink* from TopDir/pc/hostB to TopDir/pc/hostA
>
> Then whenever the *common* backup host ages, BackupPC will launch a
> new backup -- either hostA or hostB depending on which NIC is
> currently active (note: I am assuming that only one interface is
> active at a time). That way if one IP addressdidn't back up then the
> other would back up in place using the same history of numbered full
> and incremental backups. Once either backup completed then both hosts
> would look updated since they both point to the same common pc host
> subdirectory of backups. Note that the host name doesn't appear at all
> except as the name of the top level directory in the pc tree, so it
> makes no difference whether the backup is initiated as hostA or
> hostB.
>
> The only potential issue would be collisions but even that typically
> shouldn't
> happen since I assume that only one IP address is ever active at one
> time. Potentially there might be issues if the user switched interfaces in
> the middle of a backup before the first version complete or timed out
> but hopefully the new backup would catch the other as a partial backup
> and either continue from there or erase it... still I imagine there
> could be weird edge cases though they would only occur if you switched
> network interfaces mid-backup...
>
>
>
> ------------------------------------------------------------------------------
> Keep Your Developer Skills Current with LearnDevNow!
> The most comprehensive online learning library for Microsoft developers
> is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3,
> Metro Style Apps, more. Free future releases when you subscribe now!
> http://p.sf.net/sfu/learndevnow-d2d
> _______________________________________________
> BackupPC-users mailing list
> [email protected]
> List: https://lists.sourceforge.net/lists/listinfo/backuppc-users
> Wiki: http://backuppc.wiki.sourceforge.net
> Project: http://backuppc.sourceforge.net/
>
------------------------------------------------------------------------------
Get 100% visibility into Java/.NET code with AppDynamics Lite!
It's a free troubleshooting tool designed for production.
Get down to code-level detail for bottlenecks, with <2% overhead.
Download for free and get started troubleshooting in minutes.
http://pubads.g.doubleclick.net/gampad/clk?id=48897031&iu=/4140/ostg.clktrk
_______________________________________________
BackupPC-users mailing list
[email protected]
List: https://lists.sourceforge.net/lists/listinfo/backuppc-users
Wiki: http://backuppc.wiki.sourceforge.net
Project: http://backuppc.sourceforge.net/
