Date: Sun, 5 May 2013 20:26:52 -0600 From: "Kenneth D. Merry" <ken@freebsd.org> To: Pedro Giffuni <pfg@freebsd.org> Cc: freebsd-scsi@freebsd.org Subject: Re: Reference documentation for a scsi DTrace provider. Message-ID: <20130506022652.GA49892@nargothrond.kdm.org> In-Reply-To: <51870B8F.5040306@FreeBSD.org> References: <51870B8F.5040306@FreeBSD.org>
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On Sun, May 05, 2013 at 20:46:55 -0500, Pedro Giffuni wrote: > Hello; > > By the way Solaris implemented some DTrace providers it looks like we > need a scsi provider as a starting point for a iscsi provider, which in > turn (plus the IP provider) is also a requirement to get NFSv4/NFSv3 > providers. Why do the NFS providers depend on an iSCSI provider? > I suspect there may be some interest on having a scsi DTrace provider > for it's own purposes, so JIC someone wants to try and at least for > documentation purposes I will share some links I found on how it was > done for OpenSolaris. > > The original commit in OpenSolaris seems to have been this: > > https://bitbucket.org/illumos/illumos-gate/commits/c4b38ec17f4eaacad8868141411d7b513910ad4a > > Then there is an interesting blog posting that accompanies it: > > "Adding a Dtrace provider to the kernel" > https://blogs.oracle.com/chrisg/entry/adding_a_dtrace_provider_to > > And some general introductory documentation for reference: > > http://www.ibm.com/developerworks/aix/library/au-dtraceprobes.html > > https://wiki.freebsd.org/DTrace/HowToAddSDTProbes > > Hope someone finds this helpful, It is, thanks! It would be great to have a SCSI provider, and an iSCSI provider to go along with the iSCSI work that Edward Napierala <trasz@freebsd.org> is doing. I don't have the time, but perhaps someone else will. Ken -- Kenneth Merry ken@FreeBSD.ORG
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