duplicity-talk
[Top][All Lists]
Advanced

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Duplicity-talk] Directory changes when mid-backup?


From: Phil
Subject: Re: [Duplicity-talk] Directory changes when mid-backup?
Date: Fri, 06 Nov 2020 09:29:39 +0000
User-agent: mu4e 1.2.0; emacs 26.3

Thanks Rob - reading up on LVM it sounds very useful for a host of things.  
Have you found it
to be reliable - there's some anecdotal evidence I've found that it can fall 
foul of some nasty bugs?


Rob Hasselbaum writes:

> If your host uses LVM or a similar mechanism that supports filesystem 
> snapshots, you can take a snapshot immediately before the backup starts, 
> mount and backup the snapshot, and then remove it. That ensures an atomic 
> view of the filesystem as you're backing up. No files will
> change.
>
> On Tue, Nov 3, 2020 at 6:21 AM Oliver Dunk via Duplicity-talk 
> <duplicity-talk@nongnu.org> wrote:
>
>  Hi Phil,
>
>  I asked a similar question a few months ago which might interest you: 
> https://lists.nongnu.org/archive/html/duplicity-talk/2020-06/msg00003.html
>
>  On 3 Nov 2020, at 11:18, Phil via Duplicity-talk <duplicity-talk@nongnu.org> 
> wrote:
>
>  Hi,
>
>  I've been using duplicity for a while to backup daily changing
>  directories of logs and results.
>
>  I have always done this in the dead of night and locked the processes
>  which would usually write to the parent directory being backed up for the
>  duration of the backup.
>
>  However there is now a requirement to add to (and potentially even
>  modify) this directory 24/7.  I've done a few tests and running
>  duplicity on a directory whilst that directory is being written to
>  doesn't seem to fail.
>
>  My question is - is backing up a potentially change directory supported?
>
>  Does duplicity initially snapshot the directory structure - so it will
>  ignore any new files or directories created whilst it is running?  How
>  does it handle files potentially being changed or deleted during the
>  backup - if at all?
>
>  It strikes me that adding files shouldn't really be a problem (they will
>  simply be ignored until the next incremental backup) - but deleting or
>  modifying files mid-backup may be difficult to handle.
>
>  Any advice welcome!
>
>  Thanks,
>  Phil.
>
>  _______________________________________________
>  Duplicity-talk mailing list
>  Duplicity-talk@nongnu.org
>  https://lists.nongnu.org/mailman/listinfo/duplicity-talk
>
>  _______________________________________________
>  Duplicity-talk mailing list
>  Duplicity-talk@nongnu.org
>  https://lists.nongnu.org/mailman/listinfo/duplicity-talk




reply via email to

[Prev in Thread] Current Thread [Next in Thread]