On Thu, Aug 02, 2018 at 08:50:20PM +0200, Cedric Blancher wrote: > Solaris and FreeBSD dtrace facility supports this functionality. > Unfortunately, Linux rejected dtrace for license issues, and instead > did... nothing. I didn't think was this sort of question tracing was designed to answer--it's a question about the system state at a given time (who holds what locks), rather than a list of events. But I know nothing about dtrace. --b. > > Ced > > On 10 July 2018 at 04:28, Peter Scott <pjscott@xxxxxxxxxxxx> wrote: > > Hello. I am with the institutional hosting service at NASA's Jet Propulsion > > Laboratory and we have been trying to find the answer to an apparently > > simple question. > > > > We are running an NFSv4 server on Centos 7 and we need to get the server to > > tell us which files it thinks are locked by which clients. This is because > > we have observed failure modes where something apparently has a lock > > (because attempting to lock the file again blocks) but we can't find a > > client that has the lock. Finding out what the server believes would be > > critical to troubleshooting this. > > > > We tracked down Trond Myklebust and Neil Brown and conversation suggests > > that this is a function that is (a) not currently available and (b) > > reasonable to ask for. So this is me suggesting that an interface be > > provided to have knfsd output its list of locked files and clients. > > > > Regards, > > Peter Scott > > Office of the CIO > > -- > > To unsubscribe from this list: send the line "unsubscribe linux-nfs" in > > the body of a message to majordomo@xxxxxxxxxxxxxxx > > More majordomo info at http://vger.kernel.org/majordomo-info.html > > > > -- > Cedric Blancher <cedric.blancher@xxxxxxxxx> > [https://plus.google.com/u/0/+CedricBlancher/] > Institute Pasteur > -- > To unsubscribe from this list: send the line "unsubscribe linux-nfs" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
