On Tue, 11 Nov 2008 09:06:52 -0500 Jeff Garzik <jeff@xxxxxxxxxx> wrote: > FUJITA Tomonori wrote: > > On Mon, 10 Nov 2008 17:29:06 -0500 > > Jeff Garzik <jeff@xxxxxxxxxx> wrote: > > > >> Can someone recommend an open source userspace library that enables one > >> to implement a userspace iSCSI target? > > > > I'm not sure there is an open source userspace library enables you to > > easily implement your own userspace iSCSI target but there are some > > userspace iSCSI target implementations, which might useful. > > > > Some Linux distributions use: > > > > http://stgt.berlios.de/ > > > > OpenSolaris also has one: > > > > http://opensolaris.org/os/project/iscsitgt/ > > > > *BSD also have userspace iSCSI target implementations. > > Thanks much, I will take a look. I have already found and read the code > for NetBSD's iSCSI target. > > I am mainly interested in 100% userspace solution, because in my case, > the storage software (distributed goop) is also in userspace. Something > that exports through the kernel actually adds overhead, when a > straight-to-sockets userspace implementation would be more efficient. All the implementations that I referred to above are 100% userspace solution (if I correctly remember *BSD's implementations). You might think that stgt is a kernel space solution but it's 100% userspace solution if you use only its iSCSI (or FCoE) support. As you expect, it's just a userspace daemon. It doesn't require any fancy kernel features. About OSD support, I think that Pete and other osc.edu people implemented iSCSI OSD target with stgt (though I've not merged their OSD code to stgt or tried it yet): http://mailman.open-osd.org/pipermail/osd-dev/2008-June/000047.html -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
