[NBLUG/talk] Synchronizing strategies

[Omar Eljumaily]

I think it would be cheaper to just get directory/file mod listings, 
which I'm already paranoid would create undo overhead.  I know that 
Samba plugins can tell you when files have been modified without 
searching.  I'm wondering if there's such a thing for Linux file systems.

Thanks,

Omar


On 11/22/2014 11:14 AM, Zack Gold wrote:
>
> You could write a clever script that stores md5sums of every file and 
> check I'd it's changed.
>
> On Nov 22, 2014 2:13 PM, "Omar Eljumaily" <omar at omnicode.com 
> <mailto:omar at omnicode.com>> wrote:
>
>     I'd like to have the knowledge of when a file changes.  I don't
>     know how to get those notifications in linux.  Does anybody know?
>
>     Also, not all files get closed to the point where they can be
>     copied every time they're modified.  Windows clients are notorious
>     for keeping files open all day long without letting other
>     processes copy them.
>
>     The thing with the could side is that I don't want to be the
>     person responsible for running the cloud server, so I'm going to
>     have to work within the cloud provider's framework.  The ones I'm
>     looking at right now are Google and 1and1.com <http://1and1.com>
>     (which seems to be pretty cheap, about $10/month for 1 terrabyte).
>
>     Thanks,
>
>     Omar
>
>
>     On 11/22/2014 10:57 AM, Jordan Erickson wrote:
>
>         I use rsync+ssh+rsnapshot+cron for a (albeit daily) backup of
>         multiple
>         VMs in "the cloud" (my cloud) totaling about 1.5TB total to a
>         local
>         disk, then another rsnapshot to an external disk about every
>         month. It's
>         fast. rsync is designed to take large amounts of data and sync
>         them
>         efficiently.
>
>         Is there a requirement for "every hour" (and not something
>         more frequent
>         like, every time a file changes)? If not, maybe a trigger that
>         whenever
>         a file changes, it's sync'd... I'm sure multiple avenues are
>         possible
>         with some simple script-fu (and probably plenty of ready-to-go
>         packages
>         as well).
>
>
>         Jordan Erickson (PGP: 0x78DD41CB)
>         LNS: 707-636-5678 <tel:707-636-5678>, http://logicalnetworking.net
>
>
>         On 11/22/2014 10:50 AM, steve wrote:
>
>             On 11/22/2014 10:43 AM, Zack Gold wrote:
>
>                 rsync + cron?
>
>                 On Nov 22, 2014 1:36 PM, "Omar Eljumaily"
>                 <omar at omnicode.com <mailto:omar at omnicode.com>
>                 <mailto:omar at omnicode.com <mailto:omar at omnicode.com>>>
>                 wrote:
>
>                      Does anybody know about file synchronization
>                 strategies, mainly for
>                      synching from a local file server to a cloud? 
>                 What I'm trying to
>                      accomplish is:
>
>             For a terebyte???
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