Differential backups. What should I use?
I am trying to find a good way to have daily differential backups of files on my server.
I have tried using TAR, but the problem is that TAR goes by the date/timestamp change of files, not the actual modifications of files. The problem with this is that my users are using SAMBA so when they access a directory, it may cause a folder or files to change date, which then TAR thinks that it got modified, but in reality it did not. This ends up giving me HUGE unneccessary and duplicate backups of things that did not change.
The closest program that I found which does what I want is called 7z. 7z is PERFECT except that I get some errors saying "duplicate file name" in use. I contacted the author on sourceforge and he even doesn't know how to get rid of this error. With 7z, the compression ratio is AMAZING, and it does not go by date modification. It knows when a file is actually modified. It's just this darn "duplicate file name" error that i keep encountering!!! Argghh!
Are there any other good tools or software to create daily differential backups?
I have tried using TAR, but the problem is that TAR goes by the date/timestamp change of files, not the actual modifications of files. The problem with this is that my users are using SAMBA so when they access a directory, it may cause a folder or files to change date, which then TAR thinks that it got modified, but in reality it did not. This ends up giving me HUGE unneccessary and duplicate backups of things that did not change.
The closest program that I found which does what I want is called 7z. 7z is PERFECT except that I get some errors saying "duplicate file name" in use. I contacted the author on sourceforge and he even doesn't know how to get rid of this error. With 7z, the compression ratio is AMAZING, and it does not go by date modification. It knows when a file is actually modified. It's just this darn "duplicate file name" error that i keep encountering!!! Argghh!
Are there any other good tools or software to create daily differential backups?
