Re: [Nbd] [PATCH 00/12] nbd: Netlink interface and path failure enhancements
On 04/06/2017 03:01 PM, Josef Bacik 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
> - A flag to destroy the NBD device on disconnect, much like how mount -o loop
> - 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,
Added for 4.12, thanks.