Backup takes longer time each day

Asked by eridea

I am taking a backup from an NTFS esata disk to NTFS USB3 disk, there are 600GB of data and the initial backup takes over 7 hours.
I have programed it to runs once a day and the first incremental backup takes 1.5 hours, the next day takes 2.5 hours, next takes 4.5 hours, 8h, 16h, 23h... until the backups doesn't start because they takes more than 24 hours to finalize, I have changed a lot of options without success.

The only thing that worked was to disable that profile and create a new one with the same options. The initial backup took over 7 hours and first incremental backup less than 2 hours, but everyday the backup time is growing up more and more and only 7 days after its taking 15 hours.

Could you help me?

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Germar (germar) said :
#1

Do you have some kind of loop mount/symlink which makes BIT to backup its own snapshots again?

By default BIT will exclude the snapshot folder so this shouldn't happen. But may be you have some wired mounting!?

Or maybe the NTFS on the target drive has poor performens on lots of files? I'd allway suggest to use a native Linux FS on target like EXT4. Could you try out to reformat your target drive with EXT4?

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eridea (deabruki) said :
#2

No, there is no links between the source and backup disk.
Format in ext could be a solution, but I'd lose the option to connect it to windows machine.

Its strange that if I backup the same number of files increments the time every day, but If I make a new profile without erasing the previous one (double size in the disk) the problem has been solved momentarily.

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Launchpad Janitor (janitor) said :
#3

This question was expired because it remained in the 'Open' state without activity for the last 15 days.