System freeze on copy large files on usb

[Cristian Delgado]

Everytime i create/copy/move a large file >15GB on a usb the system freezes

ProblemType: Bug
DistroRelease: Ubuntu 24.04
Package: linux-image-lowlatency 6.8.0-7.7.1
ProcVersionSignature: Ubuntu 6.8.0-7.7.1-lowlatency 6.8.0-rc3
Uname: Linux 6.8.0-7-lowlatency x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.28.0-0ubuntu1
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: KDE
Date: Sun Mar 17 18:55:31 2024
InstallationDate: Installed on 2024-03-10 (7 days ago)
InstallationMedia: Ubuntu-Studio 24.04 LTS "Noble Numbat" - Daily amd64 (20240308)
SourcePackage: linux-meta-lowlatency
UpgradeStatus: No upgrade log present (probably fresh install)

[Andrea Righi (arighi)]

Can you elaborate more on the freeze part? Does the system completely freezes and it never recovers or is it a temporary freeze (until the copy completes)?

How much RAM do you have in your system?

Can you check if the following helps to mitigate the problem?

 $ echo $((32 * 1024 * 1024)) | sudo tee /proc/sys/vm/dirty_bytes
 $ echo $((16 * 1024 * 1024)) | sudo tee /proc/sys/vm/dirty_background_bytes

Thanks!