Public bug reported:
I'm running coreutils 8.26-3ubuntu4 on artful amd64, kernel
4.13.0-12-generic. The file system in use is XFS on LVM2 on top of LUKS
(discard enabled).
Steps to reproduce:
1. Create a 4GB file with dd
2. Overwrite this file with another 4GB file using dd
3. Run stat and du -h on the file
Expected behavior: du should report the file as 4GB
Observed behavior: du shows the file as 8GB size
Attachment shows detailed log.
** Affects: coreutils (Ubuntu)
Importance: Undecided
Status: New
** Attachment added: "Detailed test case"
https://bugs.launchpad.net/bugs/1723162/+attachment/4968863/+files/bugreport
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https://bugs.launchpad.net/bugs/1723162
Title:
du reports wrong file size for certain files
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