Hi, I noticed that the fstrim command does not work anymore for my NTFS partitions, probably since upgrading to kernel 5.10.x series (currently using gentoo-kernel-5.10.10). With kernel 5.9.14 this was working without problems. I have two ntfs partitions mounted in the system with NTFS-3G driver ( sys-fs/ntfs3g-2017.3.23-r3:0/88::gentoo): /dev/nvme0n1p4 on /mnt/windows type fuseblk (rw,nosuid,nodev,relatime,user_id=0,group_id=0,default_permissions,allow_other,blksize=4096) [windows] /dev/nvme0n1p5 on /mnt/windaten type fuseblk (rw,nosuid,nodev,relatime,user_id=0,group_id=0,default_permissions,allow_other,blksize=4096) [windaten] I get the following error message when executing fstrim: fstrim: /mnt/windows/: FITRIM ioctl failed: Device or resource busy while on kernel 5.9.14 the program reported something like: /mnt/windows/: 117.6 GiB (126225838080 bytes) trimmed I already compiled gentoo-sources-5.10.10 with the same configuration file from the working gentoo-kernel-5.9.14 (extracted via /proc/config.gz), but still it doesn't work. So it might be no configuration problem but a regression in the 5.10.x kernel or a compatibility problem of ntfs3g driver with he newer kernel versions. Trimming of ext4 partitions works as expected with the 5.10.x kernel. Thanks and best regards Florian
Problem persists in current Kernel 5.11.x Found this on the kernel list, might be fix. I didn't try this and will wait for stable 5.12.x, which hopefully fixes the problem https://lore.kernel.org/linux-block/53689a67-7591-0ad8-3e7d-dca9a626cd99@kernel.dk/T/
Problem is fixed with Kernel 5.11.16-gentoo-dist (or maybe even earlier).
