Hi Josef, On Thu, Apr 06, 2017 at 05:05:25PM -0400, Josef Bacik wrote: > > > On Apr 6, 2017, at 5:01 PM, Josef Bacik <josef@xxxxxxxxxxxxxx> wrote: > > > > This patchset adds a new netlink configuration interface to NBD as well as a > > bunch of enhancments around path failures. The patches provide the following > > enhancemnts to NBD > > > > - Netlink configuration interface that doesn't leave a userspace application > > waiting in kernel space for the device to disconnect. > > - Netlink reconfigure interface for adding re-connected sockets to replace dead > > sockets. > > - A flag to destroy the NBD device on disconnect, much like how mount -o loop > > works. > > - A status interface that currently will only report whether a device is > > connected or not, but can be extended to include whatever in the future. > > - A netlink multicast notification scheme to notify user space when there are > > connection issues to allow for seamless reconnects. > > - Dead link handling. You can specify a dead link timeout and the NBD device > > will pause IO for that timeout waiting to see if the connection can be > > re-established. This is helpful to allow for things like nbd server upgrades > > where the whole server disappears for a short period of time. > > > > These patches have been thorougly and continuously tested for about a month. > > I've been finding bugs in various places, but this batch has been solid for the > > last few days of testing, which include a constant disconnect/reconnect torture > > test. Thanks, > > Oops forgot to mention that I have patches for the nbd user space side > that utilizes all of these new interfaces, you can find the tree here > > https://github.com/josefbacik/nbd Yeah, found that already :-) > The user space patches are a bit rough, but utilize everything so good > for testing. They will be cleaned up and submitted once the kernel > part is upstream. Thanks, No worries, I'll probably clean it up myself. TBH, cleaning up nbd-client so it becomes somewhat less of a beast has been on my TODO list for a while, and this will only add to it... maybe that'll finally convince me that it's time ;-) -- < ron> I mean, the main *practical* problem with C++, is there's like a dozen people in the world who think they really understand all of its rules, and pretty much all of them are just lying to themselves too. -- #debian-devel, OFTC, 2016-02-12
