olli@
Developer
I've got two external SSD drives (Samsung T5) that support TRIM / UNMAP according to the vendor's specifications. However, FreeBSD doesn't seem to recognize that feature:
Does anyone know if TRIM / UNMAP is generally unsupported for USB drives with FreeBSD? I remember seeing commits some time ago that referred to USB + TRIM, but I don't remember the details. Does it only work for certain kinds of USB devices?
diskinfo -v
says it's not supported, and when I run newfs -t
on the drive and then mount it, I also get a message saying that TRIM is not supported. This is stable/12 (amd64), just a few days old. Other than that, the drives work ok with FreeBSD, although much slower than under Windows or Linux, but I think that's a known issue of FreeBSD's USB stack. smartctl
on the drives also works fine.Does anyone know if TRIM / UNMAP is generally unsupported for USB drives with FreeBSD? I remember seeing commits some time ago that referred to USB + TRIM, but I don't remember the details. Does it only work for certain kinds of USB devices?
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