> 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 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, Josef
