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I suspect my backupd is performing a full filesystem scan. I can't tell because I don't know how to use Activity Monitor (or something else) to see what directories and files backupd is reading or writing. I'd like to check that and do it periodically so I can see if it's making progress.

Can someone suggest a program or command?

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    tmutil status - this command will allow you to see how many files and bytes it has counted. Not adding as answer because it doesn’t show you the files it’s checking. – JBis Jun 16 '18 at 20:16
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This was, ultimately, the best way I could find to do it:

sudo fs_usage -f filesys | grep backupd

If I wanted to stop the flow:

sudo fs_usage -f filesys | grep backupd | more

And if I wanted to output to a text file:

sudo fs_usage -f filesys | grep backupd >output.txt

I largely found this information here at AskDifferent. I then used the manpage for the command to piece together my commands above.

Hope that helps someone.

  • Can you please post where you found this? – JBis Jun 20 '18 at 2:53
  • I found some of it here and extrapolated from there. I didn’t find a single “here’s how ya do it” source. – tcv Jun 20 '18 at 2:56
  • Ok. Thanks. Maybe be helpful to add links to other answers. – JBis Jun 20 '18 at 2:58
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    @Josh I tried to find the original URL from here but couldn’t. I will come back when I have it. – tcv Jun 20 '18 at 3:00
  • @Josh I didn’t but have now. – tcv Jun 20 '18 at 20:51

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