One line version for convenience: $ dd if=/dev/zero of=test.img bs=1M count=4096 && dd if=/dev/zero of=test.img bs=1M count=4096 && du -sh test.img 4096+0 records in 4096+0 records out 4294967296 bytes (4.3 GB, 4.0 GiB) copied, 2.53702 s, 1.7 GB/s 4096+0 records in 4096+0 records out 4294967296 bytes (4.3 GB, 4.0 GiB) copied, 2.61288 s, 1.6 GB/s 8.0G test.img
-- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to coreutils in Ubuntu. https://bugs.launchpad.net/bugs/1723162 Title: du reports wrong file size for certain files Status in coreutils package in Ubuntu: New Bug description: 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. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/coreutils/+bug/1723162/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp