$ du -sh 0--989303831270119069.wt
1.6T 0--989303831270119069.wt
$ ll -h 0--989303831270119069.wt
-rw-rw-r-- 1 mongo mongo 3.6T Oct 22 18:17 0--989303831270119069.wt
I want to know why? Is it a sparse file or something else?
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Stephen Kitt
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Database files are very often sparse, so that's a good bet. – stolenmoment Oct 23 '19 at 01:04
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but I think ls -h and du -sh ,these two commands should be the same output... like Mysql – Yucheng Chen Oct 28 '19 at 03:39
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No, not with sparse files. ls gives length (that is, highest byte written to), but du gives storage consumed. – stolenmoment Oct 29 '19 at 02:19
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1WiredTiger does not use sparse files, so the effect you're seeing is uncommon. Something to do with your filesystem perhaps? How are you mounting MongoDB's data directory? – kevinadi Nov 04 '19 at 04:48