On Mon, Sep 11, 2023 at 02:49:43PM +0200, Lorenzo Bianconi wrote: > Introduce rpc_status netlink support for NFSD in order to dump pending > RPC requests debugging information from userspace. > The new code can be tested with the user-space tool reported below: > https://github.com/LorenzoBianconi/nfsd-rpc-netlink-monitor/tree/main > > Changes since v7: > - introduce nfsd_server.yaml for netlink messages > > Changes since v6: > - report info to user-space through netlink and get rid of the related > entry in the procfs > > Changes since v5: > - add missing delimiters for nfs4 compound ops > - add a header line for rpc_status handler > - do not dump rq_prog > - do not dump rq_flags in hex > > Changes since v4: > - rely on acquire/release APIs and get rid of atomic operation > - fix kdoc for nfsd_rpc_status_open > - get rid of ',' as field delimiter in nfsd_rpc_status hanlder > - move nfsd_rpc_status before nfsd_v4 enum entries > - fix compilantion error if nfsdv4 is not enabled > > Changes since v3: > - introduce rq_status_counter in order to detect if the RPC request is > pending and RPC info are stable > - rely on __svc_print_addr to dump IP info > > Changes since v2: > - minor changes in nfsd_rpc_status_show output > > Changes since v1: > - rework nfsd_rpc_status_show output > > Changes since RFCv1: > - riduce time holding nfsd_mutex bumping svc_serv refcoung in > nfsd_rpc_status_open() > - dump rqstp->rq_stime > - add missing kdoc for nfsd_rpc_status_open() > > Link: https://bugzilla.linux-nfs.org/show_bug.cgi?id=3D3D3D366 > > Lorenzo Bianconi (3): > Documentation: netlink: add a YAML spec for nfsd_server > NFSD: introduce netlink rpc_status stubs > NFSD: add rpc_status netlink support > > Documentation/netlink/specs/nfsd_server.yaml | 97 +++++++++ > fs/nfsd/Makefile | 3 +- > fs/nfsd/nfs_netlink_gen.c | 32 +++ > fs/nfsd/nfs_netlink_gen.h | 22 ++ > fs/nfsd/nfsctl.c | 204 +++++++++++++++++++ > fs/nfsd/nfsd.h | 16 ++ > fs/nfsd/nfssvc.c | 15 ++ > fs/nfsd/state.h | 2 - > include/linux/sunrpc/svc.h | 1 + > include/uapi/linux/nfsd_server.h | 49 +++++ > 10 files changed, 438 insertions(+), 3 deletions(-) > create mode 100644 Documentation/netlink/specs/nfsd_server.yaml > create mode 100644 fs/nfsd/nfs_netlink_gen.c > create mode 100644 fs/nfsd/nfs_netlink_gen.h > create mode 100644 include/uapi/linux/nfsd_server.h Hi Lorenzo - I've applied these three to nfsd-next with the following changes: - Renaming as we discussed - Replaced the nested compound_op attribute -- may require some user space tooling changes - Simon's Smatch bug fixed - Squashed 1/3 and 2/3 into one patch - Added Closes/Acked-by etc If you spot a bug, send patches against nfsd-next and I can squash them in. I was wondering if you have a little more time to try adding one or two control cmds. write_threads and v4_end_grace might be simple ones to start with. No problem if you are "done" with this project, I can add these over time. -- Chuck Lever
