Re: [Duplicity-talk] duply abort from pre script

[Tom Ekberg]

Edgar,

Thanks for the useful answer. I was able to do this command:

  $ duply db_backup pre+bkp

which works fine. If step pre exits with a non-zero status then the bkp step 
isn't run.

Tom Ekberg
Senior Computer Specialist, Lab Medicine
University of Washington Medical Center
1959 NE Pacific St, MS 357110
Seattle WA 98195
work: (206) 598-8544
email: address@hidden
-----
Date: Tue, 13 Dec 2016 21:41:59 +0100
From: address@hidden
To: Discussion about duplicity backup <address@hidden>
Subject: Re: [Duplicity-talk] duply abort from pre script
Message-ID: <address@hidden>
Content-Type: text/plain; charset=windows-1252

On 13.12.2016 21:26, Nate Eldredge via Duplicity-talk wrote:
On Tue, 13 Dec 2016, Tom Ekberg via Duplicity-talk wrote:

I would like to run duply and have a 'pre' script do an exit with a non-zero 
status to have a backup terminate. I have done several googles and looked at 
the code.
Do you happen to know if the exit status of a 'pre' script is checked prior to 
running a backup?

>From the code at http://duply.net/wiki/index.php/duply-code it seems pretty 
>clear that the backup continues regardless of the exit status.  At line 1105 
>you can see
that a nonzero exit status causes an error message, but execution continues.  
And at line 2229 you can see that the whole thing takes place in a subshell 
anyway, and
the parent continues regardless of what the child does.

It would be pretty easy to patch it to change this behavior if you want.


actually it should work as described in the manpage
  http://duply.net/wiki/index.php/Duply-documentation

"
SEPARATORS:
  _ (underscore)  
             neutral separator
  + (plus sign), _and_  
             conditional AND
             the next command will only be executed if the previous succeeded
  - (minus sign), _or_  
             conditional OR
             the next command will only be executed if the previous failed

   example:  
    'pre+bkp-verify_post' translates to 'pre_and_bkp_or_verify_post'
"

if not it's a bug and should be fixed. ..ede/duply.net