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path: root/fs/nfs/nfs4trace.h
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* NFS: Make trace_nfs4_setup_sequence() available to NFS v4.0Anna Schumaker2017-01-301-32/+32
| | | | | | | | | This tracepoint displays information about the slot that was chosen for the RPC, in addition to session information. This could be useful information for debugging, and we can set the session id hash to 0 to indicate that there is no session. Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
* tracing: Use __get_str() when manipulating stringsDaniel Bristot de Oliveira2016-07-151-2/+2
| | | | | | | | | | | | | | | | | | Use __get_str(str) rather than __get_dynamic_array(str) when deadling with strings. It is just a code cleanup, no changes on tracepoint ABI. Link: http://lkml.kernel.org/r/ea260df91817411cca2a1f3db2abd88860094788.1467407618.git.bristot@redhat.com Cc: Trond Myklebust <trond.myklebust@primarydata.com> Cc: Anna Schumaker <anna.schumaker@netapp.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: linux-nfs@vger.kernel.org Suggested-by: Steven Rostedt <rostedt@goodmis.org> Reviewed-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Daniel Bristot de Oliveira <bristot@redhat.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
* pnfs: rework LAYOUTGET retry handlingJeff Layton2016-05-171-2/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There are several problems in the way a stateid is selected for a LAYOUTGET operation: We pick a stateid to use in the RPC prepare op, but that makes it difficult to serialize LAYOUTGETs that use the open stateid. That serialization is done in pnfs_update_layout, which occurs well before the rpc_prepare operation. Between those two events, the i_lock is dropped and reacquired. pnfs_update_layout can find that the list has lsegs in it and not do any serialization, but then later pnfs_choose_layoutget_stateid ends up choosing the open stateid. This patch changes the client to select the stateid to use in the LAYOUTGET earlier, when we're searching for a usable layout segment. This way we can do it all while holding the i_lock the first time, and ensure that we serialize any LAYOUTGET call that uses a non-layout stateid. This also means a rework of how LAYOUTGET replies are handled, as we must now get the latest stateid if we want to retransmit in response to a retryable error. Most of those errors boil down to the fact that the layout state has changed in some fashion. Thus, what we really want to do is to re-search for a layout when it fails with a retryable error, so that we can avoid reissuing the RPC at all if possible. While the LAYOUTGET RPC is async, the initiating thread always waits for it to complete, so it's effectively synchronous anyway. Currently, when we need to retry a LAYOUTGET because of an error, we drive that retry via the rpc state machine. This means that once the call has been submitted, it runs until it completes. So, we must move the error handling for this RPC out of the rpc_call_done operation and into the caller. In order to handle errors like NFS4ERR_DELAY properly, we must also pass a pointer to the sliding timeout, which is now moved to the stack in pnfs_update_layout. The complicating errors are -NFS4ERR_RECALLCONFLICT and -NFS4ERR_LAYOUTTRYLATER, as those involve a timeout after which we give up and return NULL back to the caller. So, there is some special handling for those errors to ensure that the layers driving the retries can handle that appropriately. Signed-off-by: Jeff Layton <jeff.layton@primarydata.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
* Merge branch 'bugfixes'Trond Myklebust2016-01-071-0/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * bugfixes: SUNRPC: Fixup socket wait for memory SUNRPC: Fix a missing break in rpc_anyaddr() pNFS/flexfiles: Fix an Oopsable typo in ff_mirror_match_fh() NFS: Fix attribute cache revalidation NFS: Ensure we revalidate attributes before using execute_ok() NFS: Flush reclaim writes using FLUSH_COND_STABLE NFS: Background flush should not be low priority NFSv4.1/pnfs: Fixup an lo->plh_block_lgets imbalance in layoutreturn NFSv4: Don't perform cached access checks before we've OPENed the file NFS: Allow the combination pNFS and labeled NFS NFS42: handle layoutstats stateid error nfs: Fix race in __update_open_stateid() nfs: fix missing assignment in nfs4_sequence_done tracepoint
| * nfs: fix missing assignment in nfs4_sequence_done tracepointAndrew Elble2015-12-281-0/+1
| | | | | | | | | | | | | | status_flags not set Signed-off-by: Andrew Elble <aweits@rit.edu> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
* | NFSv4: List stateid information in the callback tracepointsTrond Myklebust2015-12-281-2/+67
| | | | | | | | | | | | The stateid is extremely valuable when debugging. Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
* | pNFS: Modify pnfs_update_layout tracepoints to use layout stateidTrond Myklebust2015-12-281-6/+17
| | | | | | | | | | | | | | | | Instead of displaying a layout segment pointer in these tracepoints, let's use the layout stateid, now that Olga gave us a set of tools for displaying them. Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
* | nfs: add new tracepoint for pnfs_update_layoutJeff Layton2015-12-281-0/+56
| | | | | | | | | | | | | | | | | | | | pnfs_update_layout is really the "nexus" of layout handling. If it returns NULL then we end up going through the MDS. This patch adds some tracepoints to that function that allow us to determine the cause when we end up going through the MDS unexpectedly. Signed-off-by: Jeff Layton <jeff.layton@primarydata.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
* | Adding tracepoint to cached openOlga Kornievskaia2015-12-281-0/+39
| | | | | | | | | | Signed-off-by: Olga Kornievskaia <kolga@netapp.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
* | Adding stateid information to tracepointsOlga Kornievskaia2015-12-281-25/+230
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | Operations to which stateid information is added: close, delegreturn, open, read, setattr, layoutget, layoutcommit, test_stateid, write, lock, locku, lockt Format is "stateid=<seqid>:<crc32 hash stateid.other>", also "openstateid=", "layoutstateid=", and "lockstateid=" for open_file, layoutget, set_lock tracepoints. New function is added to internal.h, nfs_stateid_hash(), to compute the hash trace_nfs4_setattr() is moved from nfs4_do_setattr() to _nfs4_do_setattr() to get access to stateid. trace_nfs4_setattr and trace_nfs4_delegreturn are changed from INODE_EVENT to new event type, INODE_STATEID_EVENT which is same as INODE_EVENT but adds stateid information for locking tracepoints, moved trace_nfs4_set_lock() into _nfs4_do_setlk() to get access to stateid information, and removed trace_nfs4_lock_reclaim(), trace_nfs4_lock_expired() as they call into _nfs4_do_setlk() and both were previously same LOCK_EVENT type. Signed-off-by: Olga Kornievskaia <kolga@netapp.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
* NFS: Fix a tracepoint NULL-pointer dereferenceAnna Schumaker2015-10-061-1/+1
| | | | | | | | | | | Running xfstest generic/013 with the tracepoint nfs:nfs4_open_file enabled produces a NULL-pointer dereference when calculating fileid and filehandle of the opened file. Fix this by checking if state is NULL before trying to use the inode pointer. Reported-by: Olga Kornievskaia <aglo@umich.edu> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
* NFSv4: Add a tracepoint for CB_LAYOUTRECALLTrond Myklebust2015-08-251-0/+1
| | | | | | Only support for single file layoutrecall for now. Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
* NFSv4: Add a tracepoint for CB_GETATTRTrond Myklebust2015-08-251-0/+59
| | | | Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
* NFSv4.1/pnfs: Add a tracepoint for return-on-close eventsTrond Myklebust2015-08-251-0/+1
| | | | | | Allow tracing of return-on-close. Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
* VFS: normal filesystems (and lustre): d_inode() annotationsDavid Howells2015-04-151-2/+2
| | | | | | | that's the bulk of filesystem drivers dealing with inodes of their own Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* nfs: merge nfs_pgio_data into _headerWeston Andros Adamson2014-06-241-14/+14
| | | | | | | | | | | | struct nfs_pgio_data only exists as a member of nfs_pgio_header, but is passed around everywhere, because there used to be multiple _data structs per _header. Many of these functions then use the _data to find a pointer to the _header. This patch cleans this up by merging the nfs_pgio_data structure into nfs_pgio_header and passing nfs_pgio_header around instead. Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Weston Andros Adamson <dros@primarydata.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
* NFS: Create a common read and write data structAnna Schumaker2014-05-281-4/+4
| | | | | | | | At this point, the only difference between nfs_read_data and nfs_write_data is the write verifier. Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
* NFSv4.1: Add tracepoints for debugging test_stateid eventsTrond Myklebust2013-08-221-0/+49
| | | | | | Add tracepoints to detect issues with the TEST_STATEID operation. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFSv4.1: Add tracepoints for debugging slot table operationsTrond Myklebust2013-08-221-0/+139
| | | | | | | Add tracepoints to nfs41_setup_sequence and nfs41_sequence_done to track session and slot table state changes. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFSv4.1: Add tracepoints for debugging layoutget/return/commitTrond Myklebust2013-08-221-0/+55
| | | | Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFSv4: Add tracepoints for debugging reads and writesTrond Myklebust2013-08-221-0/+154
| | | | | | | Set up tracepoints to track read, write and commit, as well as pNFS reads and writes and commits to the data server. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFSv4: Add tracepoints for debugging getattrTrond Myklebust2013-08-221-0/+69
| | | | Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFSv4: Add tracepoints for debugging the idmapperTrond Myklebust2013-08-221-0/+46
| | | | | | Add tracepoints to help debug uid/gid mappings to username/group. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFSv4: Add tracepoints for debugging delegationsTrond Myklebust2013-08-221-0/+72
| | | | | | | Set up tracepoints to track when delegations are set, reclaimed, returned by the client, or recalled by the server. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFSv4: Add tracepoints for debugging renameTrond Myklebust2013-08-221-0/+43
| | | | | | Add tracepoints to debug renames. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFSv4: Add tracepoints for debugging inode manipulationsTrond Myklebust2013-08-221-0/+51
| | | | | | | | Set up basic tracepoints for debugging NFSv4 setattr, access, readlink, readdir, get_acl set_acl get_security_label, and set_security_label. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFSv4: Add tracepoints for debugging lookup/create operationsTrond Myklebust2013-08-221-0/+50
| | | | | | | Set up basic tracepoints for debugging NFSv4 lookup, unlink/remove, symlink, mkdir, mknod, fs_locations and secinfo. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFSv4: Add tracepoints for debugging file lockingTrond Myklebust2013-08-221-0/+75
| | | | | | Set up basic tracepoints for debugging NFSv4 file lock/unlock Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFSv4: Add tracepoints for debugging file openTrond Myklebust2013-08-221-0/+125
| | | | | | Set up basic tracepoints for debugging NFSv4 file open/close Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFSv4: Add tracepoints for debugging state management problemsTrond Myklebust2013-08-221-0/+220
Set up basic tracepoints for debugging client id creation/destruction and session creation/destruction. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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