On Tue, Dec 06, 2016 at 05:18:44PM +0100, Jean-Marc Saffroy wrote: > Hi, > > I am trying to use the DLM userland API (libdlm3), and while I was able to > do plain lock acquisitions and conversions, I am stuck trying to update > and then read the lock value block. > > Does anyone have working examples of this? I did look at the rhdlmbook > doc, but couldn't fine one. I haven't looked at your test to check if you're actually seeing this bug, but you'll want this fix in any case: http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/fs/dlm/user.c?id=b96f465035f9fae83c1d8de3e80eecfe6877608c In the following lvmlockd code, you can see an example of working around that bug if you don't have immediate access to a newer kernel: https://git.fedorahosted.org/cgit/lvm2.git/tree/daemons/lvmlockd/lvmlockd-dlm.c There are some other random userland tests here that use lvbs: https://fedorapeople.org/cgit/teigland/public_git/dct-stuff.git/tree/dlm Dave -- Linux-cluster mailing list Linux-cluster@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-cluster
