kernel/linux.git/net/sunrpc/debugfs.c, branch v6.19.11

sunrpc: add netns inum and srcaddr to debugfs rpc_xprt info

2025-01-22T20:53:31+00:00

The output format should provide a value that matches the one in the /proc//ns/net symlink. This makes it simpler to match the rpc_xprt and rpc_clnt to a particular container. Also, when the xprt defines the get_srcaddr operation, use that to display the source address as well. Signed-off-by: Jeff Layton Signed-off-by: Anna Schumaker

SUNRPC: display total RPC tasks for RPC client

2025-01-13T18:27:25+00:00

Display the total number of RPC tasks, including tasks waiting on workqueue and wait queues, for rpc_clnt. Signed-off-by: Dai Ngo Signed-off-by: Anna Schumaker

SUNRPC: Cache deferral injection

2022-05-19T16:25:38+00:00

Cache deferral injection stress-tests the cache deferral logic as well as upper layer protocol deferred request handlers. This facility is for developers and professional testers to ensure coverage of the rqst deferral code paths. To date, we haven't had an adequate way to ensure these code paths are covered during testing, short of temporary code changes to force their use. A file called /sys/kernel/debug/fail_sunrpc/ignore-cache-wait enables administrators to disable cache deferral injection while allowing other types of sunrpc errors to be injected. The default setting is that cache deferral injection is enabled (ignore=false). To enable support for cache deferral injection, CONFIG_FAULT_INJECTION, CONFIG_FAULT_INJECTION_DEBUG_FS, and CONFIG_SUNRPC_DEBUG must all be set to "Y". Signed-off-by: Chuck Lever

Merge tag 'nfs-for-5.15-1' of git://git.linux-nfs.org/projects/anna/linux-nfs

2021-09-04T17:25:26+00:00

Pull NFS client updates from Anna Schumaker: "New Features: - Better client responsiveness when server isn't replying - Use refcount_t in sunrpc rpc_client refcount tracking - Add srcaddr and dst_port to the sunrpc sysfs info files - Add basic support for connection sharing between servers with multiple NICs` Bugfixes and Cleanups: - Sunrpc tracepoint cleanups - Disconnect after ib_post_send() errors to avoid deadlocks - Fix for tearing down rpcrdma_reps - Fix a potential pNFS layoutget livelock loop - pNFS layout barrier fixes - Fix a potential memory corruption in rpc_wake_up_queued_task_set_status() - Fix reconnection locking - Fix return value of get_srcport() - Remove rpcrdma_post_sends() - Remove pNFS dead code - Remove copy size restriction for inter-server copies - Overhaul the NFS callback service - Clean up sunrpc TCP socket shutdowns - Always provide aligned buffers to RPC read layers" * tag 'nfs-for-5.15-1' of git://git.linux-nfs.org/projects/anna/linux-nfs: (39 commits) NFS: Always provide aligned buffers to the RPC read layers NFSv4.1 add network transport when session trunking is detected SUNRPC enforce creation of no more than max_connect xprts NFSv4 introduce max_connect mount options SUNRPC add xps_nunique_destaddr_xprts to xprt_switch_info in sysfs SUNRPC keep track of number of transports to unique addresses NFSv3: Delete duplicate judgement in nfs3_async_handle_jukebox SUNRPC: Tweak TCP socket shutdown in the RPC client SUNRPC: Simplify socket shutdown when not reusing TCP ports NFSv4.2: remove restriction of copy size for inter-server copy. NFS: Clean up the synopsis of callback process_op() NFS: Extract the xdr_init_encode/decode() calls from decode_compound NFS: Remove unused callback void decoder NFS: Add a private local dispatcher for NFSv4 callback operations SUNRPC: Eliminate the RQ_AUTHERR flag SUNRPC: Set rq_auth_stat in the pg_authenticate() callout SUNRPC: Add svc_rqst::rq_auth_stat SUNRPC: Add dst_port to the sysfs xprt info file SUNRPC: Add srcaddr as a file in sysfs sunrpc: Fix return value of get_srcport() ...

SUNRPC: Server-side disconnect injection

2021-08-20T17:50:33+00:00

Disconnect injection stress-tests the ability for both client and server implementations to behave resiliently in the face of network instability. A file called /sys/kernel/debug/fail_sunrpc/ignore-server-disconnect enables administrators to turn off server-side disconnect injection while allowing other types of sunrpc errors to be injected. The default setting is that server-side disconnect injection is enabled (ignore=false). Signed-off-by: Chuck Lever

SUNRPC: Move client-side disconnect injection

2021-08-20T17:50:32+00:00

Disconnect injection stress-tests the ability for both client and server implementations to behave resiliently in the face of network instability. Convert the existing client-side disconnect injection infrastructure to use the kernel's generic error injection facility. The generic facility has a richer set of injection criteria. Signed-off-by: Chuck Lever

SUNRPC: Add a /sys/kernel/debug/fail_sunrpc/ directory

2021-08-20T17:50:32+00:00

This directory will contain a set of administrative controls for enabling error injection for kernel RPC consumers. Signed-off-by: Chuck Lever

SUNRPC: Convert rpc_client refcount to use refcount_t

2021-08-09T20:57:04+00:00

There are now tools in the refcount library that allow us to convert the client shutdown code. Reported-by: Xiyu Yang Signed-off-by: Trond Myklebust Signed-off-by: Anna Schumaker

net: sunrpc: Fix 'snprintf' return value check in 'do_xprt_debugfs'

2020-12-02T19:05:54+00:00

'snprintf' returns the number of characters which would have been written if enough space had been available, excluding the terminating null byte. Thus, the return value of 'sizeof(buf)' means that the last character has been dropped. Signed-off-by: Fedor Tokarev Fixes: 2f34b8bfae19 ("SUNRPC: add links for all client xprts to debugfs") Signed-off-by: Trond Myklebust

Merge tag 'nfs-for-5.3-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs

2019-07-18T21:32:33+00:00

Pull NFS client updates from Trond Myklebust: "Highlights include: Stable fixes: - SUNRPC: Ensure bvecs are re-synced when we re-encode the RPC request - Fix an Oops in ff_layout_track_ds_error due to a PTR_ERR() dereference - Revert buggy NFS readdirplus optimisation - NFSv4: Handle the special Linux file open access mode - pnfs: Fix a problem where we gratuitously start doing I/O through the MDS Features: - Allow NFS client to set up multiple TCP connections to the server using a new 'nconnect=X' mount option. Queue length is used to balance load. - Enhance statistics reporting to report on all transports when using multiple connections. - Speed up SUNRPC by removing bh-safe spinlocks - Add a mechanism to allow NFSv4 to request that containers set a unique per-host identifier for when the hostname is not set. - Ensure NFSv4 updates the lease_time after a clientid update Bugfixes and cleanup: - Fix use-after-free in rpcrdma_post_recvs - Fix a memory leak when nfs_match_client() is interrupted - Fix buggy file access checking in NFSv4 open for execute - disable unsupported client side deduplication - Fix spurious client disconnections - Fix occasional RDMA transport deadlock - Various RDMA cleanups - Various tracepoint fixes - Fix the TCP callback channel to guarantee the server can actually send the number of callback requests that was negotiated at mount time" * tag 'nfs-for-5.3-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: (68 commits) pnfs/flexfiles: Add tracepoints for detecting pnfs fallback to MDS pnfs: Fix a problem where we gratuitously start doing I/O through the MDS SUNRPC: Optimise transport balancing code SUNRPC: Ensure the bvecs are reset when we re-encode the RPC request pnfs/flexfiles: Fix PTR_ERR() dereferences in ff_layout_track_ds_error NFSv4: Don't use the zero stateid with layoutget SUNRPC: Fix up backchannel slot table accounting SUNRPC: Fix initialisation of struct rpc_xprt_switch SUNRPC: Skip zero-refcount transports SUNRPC: Replace division by multiplication in calculation of queue length NFSv4: Validate the stateid before applying it to state recovery nfs4.0: Refetch lease_time after clientid update nfs4: Rename nfs41_setup_state_renewal nfs4: Make nfs4_proc_get_lease_time available for nfs4.0 nfs: Fix copy-and-paste error in debug message NFS: Replace 16 seq_printf() calls by seq_puts() NFS: Use seq_putc() in nfs_show_stats() Revert "NFS: readdirplus optimization by cache mechanism" (memleak) SUNRPC: Fix transport accounting when caller specifies an rpc_xprt NFS: Record task, client ID, and XID in xdr_status trace points ...