id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc	blockedby	blocking	branch_state	votes
4510	The problem with copying to the same partition	bindto		"partition :  3TB, xfs

Linux 6.2.0-36-generic #37~22.04.1-Ubuntu SMP PREEMPT_DYNAMIC Mon Oct  9 15:34:04 UTC 2 x86_64 x86_64 x86_64 GNU/Linux

current version: 4.8.27, tested with 4.8.30, the problem persists 


Copying files to the same partition works very fast, without calculating the size. A huge 1.7 TB directory was copied in 1 second, the du command run from the root of the partition showed a size larger than the partition size in the df command. The copied files are not mapping or link, the modified target file is different from the source file.

This problem only occurs when copying files on the same 3 TB partition, copying from another partition to a 3 TB partition works correctly. 

The cp command on the same partition works correctly. The file system has no errors.
 "	defect	new	critical	Future Releases	mc-core	4.8.30						no branch