My colleagues and I would like to apply the fault injection of the Linux to test error handling of RNBD module. RNBD module consists of client and server modules that are connected via Infiniband network. So it is important for the client to receive the error of the server and handle it smoothly. When debugfs is enabled, RNBD is able to export interfaces to fail RNBD client and server. Following fault injection points are enabled: - fail BIO processing on RNBD server side - fail IO transferation on RNBD client side - fail device unmapping on RNBD client side This patch set is just a starting point. We will enable various faults and test as many error cases as possible. Best regards Gioh Kim (5): block/rnbd: Enable the fault-injection block/rnbd-srv: Inject a fault at bio processing block/rnbd-clt: Inject some fault points docs: fault-injection: Add fault-injection manual of RNBD docs: Add RTRS/RNBD to the index of fault-injection Documentation/fault-injection/index.rst | 2 + .../fault-injection/rnbd-fault-injection.rst | 208 ++++++++++++++++++ drivers/block/rnbd/rnbd-clt-sysfs.c | 53 +++++ drivers/block/rnbd/rnbd-clt.c | 17 ++ drivers/block/rnbd/rnbd-clt.h | 15 ++ drivers/block/rnbd/rnbd-common.c | 44 ++++ drivers/block/rnbd/rnbd-proto.h | 14 ++ drivers/block/rnbd/rnbd-srv-sysfs.c | 37 ++++ drivers/block/rnbd/rnbd-srv.c | 7 + drivers/block/rnbd/rnbd-srv.h | 13 ++ 10 files changed, 410 insertions(+) create mode 100644 Documentation/fault-injection/rnbd-fault-injection.rst -- 2.25.1
