Re: [Bacula-users] What happen if I delete a single incremental between the full and another incremental
On Sat, Oct 16, 2010 at 09:33:13AM +0200, Hugo Letemplier wrote: Hi thanks a lot for your answers I have retried with a new test scenario its clear now and deleting an incremental is really dangerous. But I think that a function that enable the administrator to join 2 jobs would be cool. Imagine that one day lots of data manipulation are done on the machine that I want to backup, so there is a great difference between 2 incremental. The jobs are done, and deleting one job is dangerous for the jobs that follows In this case, that would be great to mix 2 jobs. Its quite complicated to explain I know. Take a look at this little scenario, a classical Full with his incremental jobs : the client is typically a big file server 1 - The full 2 - an incremental 3 - someone make a mistake while he was exploring the file server he made lots of copy of files in the server (for example : a bad drag and drop). 4 - a nightly scheduled incremental 5 - the administrator see that the last incremental got a lot of new files and that job bytes got a huge value. 5 - the user see his error and deletes the duplicates 6 - a new incremental is ran 7 - after checking everything, I want to reduce the size of my backups by fusioning the two last incrementals. The idea is to add new files of step 4 to step 6 but without the files deleted at step 6 In a mathematical view, it can be seen like that : Inc6.1 = Inc4 - (Files of Inc4 deleted at Inc6.0) + (new files of inc6.0) + (crush files modified after Inc4 with their version of inc6.0) I hope that it can be understood more easily than the previous post ! Perhaps a VirtualFull backup is what you are looking for? Thanks a lot Hugo Le 13 oct. 2010 à 17:53, Jari Fredriksson a écrit : On 13.10.2010 18:21, Hugo Letemplier wrote: Hi, I have an important question that will help me validating some specs about bacula 5.0.2 Imagine the following scenario: 1 - a full 2 - an incremental 3 - an incremental 4 - another incremental if I delete the incremental of step 3, does it move the files that have been added during step 3 onto the incremental of step 4 I have tried this scenario but my result is not clear. Can you tell me your experience ? In other words: can I delete one Incremental without deleting more recents incrementals or if I delete the full does it upgrade the first incremental into full ? I *think* Bacula uses timestamps when doing incrementals. if you delete one incremental, you lose the files modified/created for that day. But if you delete the full, Bacula upgrades the next incremental to Full, as it finds no suitable Full to do the incremental for. -- Beautiful is writing same markup. Internet Explorer 9 supports standards for HTML5, CSS3, SVG 1.1, ECMAScript5, and DOM L2 L3. Spend less time writing and rewriting code and more time creating great experiences on the web. Be a part of the beta today. http://p.sf.net/sfu/beautyoftheweb ___ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users -- Download new Adobe(R) Flash(R) Builder(TM) 4 The new Adobe(R) Flex(R) 4 and Flash(R) Builder(TM) 4 (formerly Flex(R) Builder(TM)) enable the development of rich applications that run across multiple browsers and platforms. Download your free trials today! http://p.sf.net/sfu/adobe-dev2dev ___ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users -- Download new Adobe(R) Flash(R) Builder(TM) 4 The new Adobe(R) Flex(R) 4 and Flash(R) Builder(TM) 4 (formerly Flex(R) Builder(TM)) enable the development of rich applications that run across multiple browsers and platforms. Download your free trials today! http://p.sf.net/sfu/adobe-dev2dev ___ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
Re: [Bacula-users] What happen if I delete a single incremental between the full and another incremental
On Mon, 18 Oct 2010, Graham Keeling wrote: On Sat, Oct 16, 2010 at 09:33:13AM +0200, Hugo Letemplier wrote: Hi thanks a lot for your answers I have retried with a new test scenario its clear now and deleting an incremental is really dangerous. But I think that a function that enable the administrator to join 2 jobs would be cool. Imagine that one day lots of data manipulation are done on the machine that I want to backup, so there is a great difference between 2 incremental. The jobs are done, and deleting one job is dangerous for the jobs that follows In this case, that would be great to mix 2 jobs. Its quite complicated to explain I know. Take a look at this little scenario, a classical Full with his incremental jobs : the client is typically a big file server I hope that it can be understood more easily than the previous post ! Perhaps a VirtualFull backup is what you are looking for? Or a differential maybe? Gavin -- Download new Adobe(R) Flash(R) Builder(TM) 4 The new Adobe(R) Flex(R) 4 and Flash(R) Builder(TM) 4 (formerly Flex(R) Builder(TM)) enable the development of rich applications that run across multiple browsers and platforms. Download your free trials today! http://p.sf.net/sfu/adobe-dev2dev ___ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
Re: [Bacula-users] What happen if I delete a single incremental between the full and another incremental
Hi thanks a lot for your answers I have retried with a new test scenario its clear now and deleting an incremental is really dangerous. But I think that a function that enable the administrator to join 2 jobs would be cool. Imagine that one day lots of data manipulation are done on the machine that I want to backup, so there is a great difference between 2 incremental. The jobs are done, and deleting one job is dangerous for the jobs that follows In this case, that would be great to mix 2 jobs. Its quite complicated to explain I know. Take a look at this little scenario, a classical Full with his incremental jobs : the client is typically a big file server 1 - The full 2 - an incremental 3 - someone make a mistake while he was exploring the file server he made lots of copy of files in the server (for example : a bad drag and drop). 4 - a nightly scheduled incremental 5 - the administrator see that the last incremental got a lot of new files and that job bytes got a huge value. 5 - the user see his error and deletes the duplicates 6 - a new incremental is ran 7 - after checking everything, I want to reduce the size of my backups by fusioning the two last incrementals. The idea is to add new files of step 4 to step 6 but without the files deleted at step 6 In a mathematical view, it can be seen like that : Inc6.1 = Inc4 - (Files of Inc4 deleted at Inc6.0) + (new files of inc6.0) + (crush files modified after Inc4 with their version of inc6.0) I hope that it can be understood more easily than the previous post ! Thanks a lot Hugo Le 13 oct. 2010 à 17:53, Jari Fredriksson a écrit : On 13.10.2010 18:21, Hugo Letemplier wrote: Hi, I have an important question that will help me validating some specs about bacula 5.0.2 Imagine the following scenario: 1 - a full 2 - an incremental 3 - an incremental 4 - another incremental if I delete the incremental of step 3, does it move the files that have been added during step 3 onto the incremental of step 4 I have tried this scenario but my result is not clear. Can you tell me your experience ? In other words: can I delete one Incremental without deleting more recents incrementals or if I delete the full does it upgrade the first incremental into full ? I *think* Bacula uses timestamps when doing incrementals. if you delete one incremental, you lose the files modified/created for that day. But if you delete the full, Bacula upgrades the next incremental to Full, as it finds no suitable Full to do the incremental for. -- Beautiful is writing same markup. Internet Explorer 9 supports standards for HTML5, CSS3, SVG 1.1, ECMAScript5, and DOM L2 L3. Spend less time writing and rewriting code and more time creating great experiences on the web. Be a part of the beta today. http://p.sf.net/sfu/beautyoftheweb ___ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users -- Download new Adobe(R) Flash(R) Builder(TM) 4 The new Adobe(R) Flex(R) 4 and Flash(R) Builder(TM) 4 (formerly Flex(R) Builder(TM)) enable the development of rich applications that run across multiple browsers and platforms. Download your free trials today! http://p.sf.net/sfu/adobe-dev2dev ___ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
Re: [Bacula-users] What happen if I delete a single incremental between the full and another incremental
On 10/13/10 11:21, Hugo Letemplier wrote: Hi, I have an important question that will help me validating some specs about bacula 5.0.2 Imagine the following scenario: 1 - a full 2 - an incremental 3 - an incremental 4 - another incremental if I delete the incremental of step 3, does it move the files that have been added during step 3 onto the incremental of step 4 I have tried this scenario but my result is not clear. Can you tell me your experience ? In other words: can I delete one Incremental without deleting more recents incrementals or if I delete the full does it upgrade the first incremental into full ? Aaah. The other words make more sense. :) You can delete any incremental job without affecting any other incremental. Doing so will lose the record of changes backed up in that incremental, though, as an incremental records only changes since the most recent backup of *any* level. So in your scenario above, if you delete incremental #3, then your next incremental #5 will back up only files changed since incremental #4; it will *not* re-backup the changes previously backed up as incremental #3. (For this reason among others, it is generally recommended to make periodic differential backups, which record all changes since the last Full backup, to reduce the number of incrementals needed for a restore. As an example, I perform Full backups once a month, Differential once a week, and Incremental every other night.) If you delete a Full backup, it will not upgrade any *existing* backup. However, if you delete *the most recent* Full backup, which has current Incrementals or Differentials based upon it, then the *next* Incremental or Differential that you run will be upgraded to Full. -- Phil Stracchino, CDK#2 DoD#299792458 ICBM: 43.5607, -71.355 ala...@caerllewys.net ala...@metrocast.net p...@co.ordinate.org Renaissance Man, Unix ronin, Perl hacker, Free Stater It's not the years, it's the mileage. -- Beautiful is writing same markup. Internet Explorer 9 supports standards for HTML5, CSS3, SVG 1.1, ECMAScript5, and DOM L2 L3. Spend less time writing and rewriting code and more time creating great experiences on the web. Be a part of the beta today. http://p.sf.net/sfu/beautyoftheweb ___ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
Re: [Bacula-users] What happen if I delete a single incremental between the full and another incremental
On 13.10.2010 18:21, Hugo Letemplier wrote: Hi, I have an important question that will help me validating some specs about bacula 5.0.2 Imagine the following scenario: 1 - a full 2 - an incremental 3 - an incremental 4 - another incremental if I delete the incremental of step 3, does it move the files that have been added during step 3 onto the incremental of step 4 I have tried this scenario but my result is not clear. Can you tell me your experience ? In other words: can I delete one Incremental without deleting more recents incrementals or if I delete the full does it upgrade the first incremental into full ? I *think* Bacula uses timestamps when doing incrementals. if you delete one incremental, you lose the files modified/created for that day. But if you delete the full, Bacula upgrades the next incremental to Full, as it finds no suitable Full to do the incremental for. -- Beautiful is writing same markup. Internet Explorer 9 supports standards for HTML5, CSS3, SVG 1.1, ECMAScript5, and DOM L2 L3. Spend less time writing and rewriting code and more time creating great experiences on the web. Be a part of the beta today. http://p.sf.net/sfu/beautyoftheweb ___ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
