In article <102k6l5$u8i$1...@ciao.gmane.io>, Christos Zoulas <chris...@astron.com> wrote: >In article ><cao5qjjvt65vay7rsqk8jgcj_h8ipwymyd5dkuko8cgv+rsj...@mail.gmail.com>, >Joshua Gillett <joshuagill...@college.harvard.edu> wrote: >>-=-=-=-=-=- >> >>tech-kern, >> >>I wanted to follow up. Iâm interesting in doing some work on this and >>wanted to know the feasibility of and if there was any more information >>pertaining to the project. >> >>Best wishes, >>Joshua Gillett >>Harvard College â27 >>A.B. Candidate in Computer Science > >Hi Joshua, > >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 >first and model it after that. I would start with ioctl support, then >userland utility support to test and finally I would start adding support >to ffs. I think that we would need to update our zfs code to support trim.
And of course Greg is right, there is fdiscard(2) I missed that. There is also a long discussion about fdiscard and the ioctl approach in this group, so I would start by reading that. christos
