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re: Working on Discard for FFS
> There is some low level support in NetBSD for trim in the device drivers
> (wd for example), but there is no ioctl interface, filesystem support and
> of course no userland trim utility. I would check out how FreeBSD does it
BLKDISCARD(8) System Manager's Manual BLKDISCARD(8)
NAME
blkdiscard - tool to discard portions of a device or file
...
HISTORY
The blkdiscard command first appeared linux-util. This implementation
was originally called fdiscard-stuff and has been converted to be
blkdiscard(8) compatible and appeared in NetBSD 10.0.
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