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* nfs41: Invoke RECLAIM_COMPLETE on all new client idsRicardo Labiaga2009-12-081-3/+4
| | | | | | | | | | | | | The NFSv4.1 spec indicates RECLAIM_COMPLETE is to be issued whenever a client establishes a new client id, not only after detecting the server has rebooted. Set the NFS4CLNT_RECLAIM_REBOOT bit after every new client id has been established. This enables us to issue RECLAIM_COMPLETE during the wrap up of the NFS4CLNT_RECLAIM_REBOOT state. Signed-off-by: Ricardo Labiaga <Ricardo.Labiaga@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* nfs41: Mark stateids in need of reclaim if state manager gets stale clientidRicardo Labiaga2009-12-071-10/+2
| | | | | | | | The state manager was not marking the stateids as needing to be reclaimed after reestablishing the clientid. Signed-off-by: Ricardo Labiaga <Ricardo.Labiaga@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* nfs41: Don't clear DRAINING flag on NFS4ERR_STALE_CLIENTIDRicardo Labiaga2009-12-061-18/+41
| | | | | | | | | | | | | | | If CREATE_SESSION fails with NFS4ERR_STALE_CLIENTID, don't clear the NFS4CLNT_SESSION_DRAINING flag and don't wake RPCs waiting for the session to be reestablished. We don't have a session yet, so there is no reason to wake other RPCs. This avoids sending spurious compounds with bogus sequenceID during session and state recovery. Signed-off-by: Ricardo Labiaga <Ricardo.Labiaga@netapp.com> [Trond.Myklebust@netapp.com: cleaned up patch by adding the nfs41_begin/end_drain_session() helpers] Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* nfs41: nfs41_setup_state_renewalRicardo Labiaga2009-12-061-5/+29
| | | | | | | | | | Move call to get the lease time and the setup of the state renewal out of nfs4_create_session so that it can be called after clearing the DRAINING flag. We use the getattr RPC to obtain the lease time, which requires a sequence slot. Signed-off-by: Ricardo Labiaga <Ricardo.Labiaga@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFSv41: Fix up some bugs in the NFS4CLNT_SESSION_DRAINING codeTrond Myklebust2009-12-051-2/+2
| | | | Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFSv41: Fix nfs4_proc_create_sessionTrond Myklebust2009-12-051-2/+2
| | | | | | | | | | | | We should not assume that nfs41_init_clientid() will always want to initialise the session. If it is being called due to a server reboot, then we just want to reset the session after re-establishing the clientid. Fix this by getting rid of the 'reset' parameter in nfs4_proc_create_session(), and instead relying on whether or not the session slot table pointer is non-NULL. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* nfs41: Invoke RECLAIM_COMPLETERicardo Labiaga2009-12-051-0/+3
| | | | | | | | | | | | | | | This patch invokes RECLAIM_COMPLETE after the client is done reclaiming state. There are interpretations of the spec that suggest that RECLAIM_COMPLETE should also be issued after a new clientid has been obtained from the server and even if there is no state to reclaim. This tells the server that the client has no state to reclaim even if the client isn't aware the server may have rebooted. Signed-off-by: Ricardo Labiaga <Ricardo.Labiaga@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* nfs41: RECLAIM_COMPLETE functionalityRicardo Labiaga2009-12-051-0/+8
| | | | | | | | | | | | | | | | Implements RECLAIM_COMPLETE as an asynchronous RPC. NFS4ERR_DELAY is retried, NFS4ERR_DEADSESSION invokes the error handling but does not result in a retry, since we don't want to have a lingering RECLAIM_COMPLETE call sent in the middle of a possible new state recovery cycle. If a session reset occurs, a new wave of reclaim operations will follow, containing their own RECLAIM_COMPLETE call. We don't want a retry to get on the way of recovery by incorrectly indicating to the server that we're done reclaiming state. A subsequent patch invokes the functionality. Signed-off-by: Ricardo Labiaga <Ricardo.Labiaga@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFSv41: nfs4_reset_session must always set NFS4CLNT_SESSION_DRAININGTrond Myklebust2009-12-051-1/+1
| | | | | | | Otherwise we have no guarantees that other processes won't start another RPC call while we're resetting the session. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* nfs41: check SEQUENCE status flagAlexandros Batsakis2009-12-051-0/+22
| | | | | | | | | | the server can indicate a number of error conditions by setting the appropriate bits in the SEQUENCE operation. The client re-establishes state with the server when it receives one of those, with the action depending on the specific case. Signed-off-by: Alexandros Batsakis <batsakis@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* nfs41: only state manager sets NFS4CLNT_SESSION_SETUPAndy Adamson2009-12-041-1/+3
| | | | | | | | Replace sync and async handlers setting of the NFS4CLNT_SESSION_SETUP bit with setting NFS4CLNT_CHECK_LEASE, and let the state manager decide to reset the session. Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* nfs41: nfs41: fix state manager deadlock in session resetAndy Adamson2009-12-041-0/+15
| | | | | | | | | | | | | | | | If the session is reset during state recovery, the state manager thread can sleep on the slot_tbl_waitq causing a deadlock. Add a completion framework to the session. Have the state manager thread set a new session state (NFS4CLNT_SESSION_DRAINING) and wait for the session slot table to drain. Signal the state manager thread in nfs41_sequence_free_slot when the NFS4CLNT_SESSION_DRAINING bit is set and the session is drained. Reported-by: Trond Myklebust <trond@netapp.com> Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* nfs41: fix switch in nfs4_recovery_handle_errorAndy Adamson2009-12-041-0/+1
| | | | | | | Do not fall through and set NFS4CLNT_SESSION_RESET bit on NFS4ERR_EXPIRED Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* nfs41: rename cl_state session SETUP bit to RESETAndy Adamson2009-12-041-4/+4
| | | | | | | The bit is no longer used for session setup, only for session reset. Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* nfs41: add create session into establish_clidAndy Adamson2009-12-041-21/+14
| | | | | | | | | | | | | | Reported-by: Trond Myklebust <trond.myklebust@netapp.com> Resetting the clientid from the state manager could result in not confirming the clientid due to create session not being called. Move the create session call from the NFS4CLNT_SESSION_SETUP state manager initialize session case into the NFS4CLNT_LEASE_EXPIRED case establish_clid call. Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* Merge branch 'devel' into linux-nextTrond Myklebust2009-12-031-0/+8
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| * NFSv4.1: Handle NFSv4.1 session errors in the lock recovery codeTrond Myklebust2009-12-031-0/+8
| | | | | | | | Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* | NFSv4: Fix up error handling in the state manager main loop.Trond Myklebust2009-12-031-27/+21
| | | | | | | | | | | | | | | | The nfs4_state_manager should not be looking at the error values when deciding whether or not to loop round in order to handle a higher priority state recovery task. It should rather be looking at the clp->cl_state. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* | NFSv4: Ensure the state manager handles NFS4ERR_NO_GRACE correctlyTrond Myklebust2009-12-031-0/+3
| | | | | | | | Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* | NFSv4: The state manager shouldn't exit on errors that were handledTrond Myklebust2009-12-031-6/+5
| | | | | | | | | | | | | | | | | | | | | | | | nfs4_recovery_handle_error() will correctly handle errors such as NFS4ERR_CB_PATH_DOWN, however because they are still passed back to the main loop in nfs4_state_manager(), they can cause the latter to exit prematurely. Fix this by letting nfs4_recovery_handle_error() change the error value in cases where there is no action required by the caller. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* | NFSv4: Fix up the callers of nfs4_state_end_reclaim_rebootTrond Myklebust2009-12-031-3/+2
|/ | | | | | | | | | | In practice, we need to ensure that we call nfs4_state_end_reclaim_reboot in 2 cases: - If we lose the lease while we were reclaiming state OR - After we're done with reboot recovery Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* const: make file_lock_operations constAlexey Dobriyan2009-09-221-1/+1
| | | | | | Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* NFSv4: Fix an infinite looping problem with the nfs4_state_managerTrond Myklebust2009-08-241-2/+2
| | | | | | | | | | | | | | | | Commit 76db6d9500caeaa774a3e32a997eba30bbdc176b (nfs41: add session setup to the state manager) introduces an infinite loop possibility in the NFSv4 state manager. By first checking nfs4_has_session() before clearing the NFS4CLNT_SESSION_SETUP flag, it allows for a situation where someone sets that flag, but it never gets cleared, and so the state manager loops. In fact commit c3fad1b1aaf850bf692642642ace7cd0d64af0a3 (nfs41: add session reset to state manager) causes this to happen every time we get a network partition error. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Tested-by: Daniel J Blueman <daniel.blueman@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* NFSv4: Fix an Oops in nfs4_free_lock_stateTrond Myklebust2009-07-211-1/+1
| | | | | | | | | | | The oops http://www.kerneloops.org/raw.php?rawid=537858&msgid= appears to be due to the nfs4_lock_state->ls_state field being uninitialised. This happens if the call to nfs4_free_lock_state() is triggered at the end of nfs4_get_lock_state(). The fix is to move the initialisation of ls_state into the allocator. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* Merge branch 'devel-for-2.6.31' into for-2.6.31Trond Myklebust2009-06-181-10/+27
|\ | | | | | | | | | | Conflicts: fs/nfs/client.c fs/nfs/super.c
| * NFS: Ensure we always hold the BKL when dereferencing inode->i_flockTrond Myklebust2009-06-171-0/+9
| | | | | | | | Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * NFSv4: Handle more errors when recovering open file and locking stateTrond Myklebust2009-06-171-10/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It is possible for servers to return NFS4ERR_BAD_STATEID when the state management code is recovering locks or is reclaiming state when returning a delegation. Ensure that we handle that case. While we're at it, add in handlers for NFS4ERR_STALE, NFS4ERR_ADMIN_REVOKED, NFS4ERR_OPENMODE, NFS4ERR_DENIED and NFS4ERR_STALE_STATEID, since the protocol appears to allow for them too. Also handle ENOMEM... Finally, rather than add new NFSv4.0-specific errors and error handling into the generic delegation code, move that open file and locking state error handling into the NFSv4 layer. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* | nfs41: increment_{open,lock}_seqidBenny Halevy2009-06-171-5/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Unlike minorversion0, in nfsv4.1 the open and lock seqids need not be incremented by the client and should always be set to zero. This is implemented using a new nfs_rpc_ops methods - increment_open_seqid and increment_lock_seqid Signed-off-by: Rahul Iyer <iyer@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: check for session not minorversion] Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* | nfs41: only retry EXCHANGE_ID on recoverable errorsAndy Adamson2009-06-171-1/+22
| | | | | | | | | | | | | | | | Stops an infinite loop of EXCHANGE_ID. Signed-off-by: Andy Adamson <andros@netapp.com> [fixed checkpatch warnings] Signed-off-by: Benny Halevy <bhalevy@panasas.com>
* | nfs41: get_clid_cred for EXCHANGE_IDAndy Adamson2009-06-171-0/+14
| | | | | | | | | | | | | | | | | | Unlike SETCLIENTID, EXCHANGE_ID requires a machine credential. Do not search for credentials other than the machine credential. Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* | nfs41: add a get_clid_cred function to nfs4_state_recovery_opsAndy Adamson2009-06-171-1/+1
| | | | | | | | | | | | | | | | | | EXCHANGE_ID has different credential requirements than SETCLIENTID. Prepare for a separate credential function. Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* | nfs41: establish sessions-based clientidAndy Adamson2009-06-171-4/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | nfsv4.1 clientid is established via EXCHANGE_ID rather than SETCLIENTID{,_CONFIRM} This is implemented using a new establish_clid method in nfs4_state_recovery_ops. nfs41: establish clientid via exchange id only if cred != NULL >From 2.6.26 reclaimer() uses machine cred for setting up the client id therefore it is never expected to be NULL. Signed-off-by: Rahul Iyer <iyer@netapp.com> [removed dprintk] Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: lease renewal] [revamped patch for new nfs4_state_manager design] Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* | nfs41: introduce get_state_renewal_credAndy Adamson2009-06-171-13/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use the machine cred for sending SEQUENCE to renew the client's lease. [revamp patch for new state management design starting 2.6.29] [nfs41: support minorversion 1 for nfs4_check_lease] Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: get cred in exchange_id when cred arg is NULL] Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: use cl_machined_cred instead of cl_ex_cred] Since EXCHANGE_ID insists on using the machine credential, cl_ex_cred is not needed. nfs4_proc_exchange_id() is only called if the machine credential is available. Remove the credential logic from nfs4_proc_exchange_id. Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* | nfs41: support minorversion 1 for nfs4_check_leaseBenny Halevy2009-06-171-1/+3
| | | | | | | | | | | | | | [moved nfs4_get_renew_cred related changes to "nfs41: introduce get_state_renewal_cred"] Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* | nfs41: add session reset to state managerAndy Adamson2009-06-171-2/+49
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Move the code to reset a session from the session_reclaimer to the nfs4_state_manager. Destroy the session, and create a new one. Treat NFS4ERR_BADSESSION and NFS4ERR_DEADSESSION as a successful nfs4_proc_destroy_session. Signal nfs4_proc_create_session that this is a session reset so that the session slot table is re-used. If the clientid is stale, set both NFS4CLNT_LEASE_EXPIRED and NFS4CLNT_SESSION_SETUP bits and retry. Use a switch statement in nfs4_session_recovery_handle_error for future patche which will add handling for other errors. Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: session reset in nfs4_recovery_handle_error] Signed-off-by: Andy Adamson <andros@netapp.com> [nfs41: reset session on nfs4_do_reclaim session reset error] If nfs4_do_reclaim gets a session reset error, nfs4_recovery_handle_error will set the NFS4CLNT_SESSION_SETUP bit, and the state manager should continue processing to reset the session. Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [move nfs4_proc_destroy_session declaration here] Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* | nfs41: add session setup to the state managerAndy Adamson2009-06-171-1/+34
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | At mount, nfs_alloc_client sets the cl_state NFS4CLNT_LEASE_EXPIRED bit and nfs4_alloc_session sets the NFS4CLNT_SESSION_SETUP bit, so both bits are set when nfs4_lookup_root calls nfs4_recover_expired_lease which schedules the nfs4_state_manager and waits for it to complete. Place the session setup after the clientid establishment in nfs4_state_manager so that the session is setup right after the clientid has been established without rescheduling the state manager. Unlike nfsv4.0, the nfs_client struct is not ready to use until the session has been established. Postpone marking the nfs_client struct to NFS_CS_READY until after a successful CREATE_SESSION call so that other threads cannot use the client until the session is established. If the EXCHANGE_ID call fails and the session has not been setup (the NFS4CLNT_SESSION_SETUP bit is set), mark the client with the error and return. If the session setup CREATE_SESSION call fails with NFS4ERR_STALE_CLIENTID which could occur due to server reboot or network partition inbetween the EXCHANGE_ID and CREATE_SESSION call, reset the NFS4CLNT_LEASE_EXPIRED and NFS4CLNT_SESSION_SETUP bits and try again. If the CREATE_SESSION call fails with other errors, mark the client with the error and return. Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: NFS_CS_SESSION_SETUP cl_cons_state for back channel setup] On session setup, the CREATE_SESSION reply races with the server back channel probe which needs to succeed to setup the back channel. Set a new cl_cons_state NFS_CS_SESSION_SETUP just prior to the CREATE_SESSION call and add it as a valid state to nfs_find_client so that the client back channel can find the nfs_client struct and won't drop the server backchannel probe. Use a new cl_cons_state so that NFSv4.0 back channel behaviour which only sets NFS_CS_READY is unchanged. Adjust waiting on the nfs_client_active_wq accordingly. Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: rename NFS_CS_SESSION_SETUP to NFS_CS_SESSION_INITING] Signed-off-by: Andy Adamson <andros@netapp.com> [nfs41: set NFS_CL_SESSION_INITING in alloc_session] Signed-off-by: Andy Adamson <andros@netapp.com> [nfs41: move session setup into a function] Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [moved nfs4_proc_create_session declaration here] Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* | nfs41: translate NFS4ERR_MINOR_VERS_MISMATCH to EPROTONOSUPPORTBenny Halevy2009-06-171-0/+2
|/ | | | | | | | To be returned to the mount command when trying to mount a v4 server using minorversion 1. Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFS: Start PF_INET6 callback listener only if IPv6 support is availableChuck Lever2009-03-281-2/+8
| | | | | | | | | | | | | | | | | | Apparently a lot of people need to disable IPv6 completely on their distributor-built systems, which have CONFIG_IPV6_MODULE enabled at build time. They do this by blacklisting the ipv6.ko module. This causes the creation of the NFSv4 callback service listener to fail if CONFIG_IPV6_MODULE is set, but the module cannot be loaded. Now that the kernel's PF_INET6 RPC listeners are completely separate from PF_INET listeners, we can always start PF_INET. Then the NFS client can try to start a PF_INET6 listener, but it isn't required to be available. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFSv4: Convert the open and close ops to use fmodeTrond Myklebust2008-12-231-12/+12
| | | | Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFSv4: Clean up nfs_expire_all_delegations()Trond Myklebust2008-12-231-1/+1
| | | | | | | Let the actual delegreturn stuff be run in the state manager thread rather than allocating a separate kthread. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFSv4: Fix a BAD_SEQUENCEID condition.Trond Myklebust2008-12-231-2/+0
| | | | | | | | | | We really shouldn't be resetting the sequence ids when doing state expiration recovery, since we don't know if the server still remembers our previous state owners. There are servers out there that do attempt to preserve client state even if the lease has expired. Such a server would only release that state if a conflicting OPEN request occurs. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFSv4: Don't exit the state management if there are still tasks to doTrond Myklebust2008-12-231-2/+6
| | | | | | Fix up a potential race... Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFSv4: Rename the state reclaimer threadTrond Myklebust2008-12-231-21/+28
| | | | | | It is really a more general purpose state management thread at this point. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFSv4: Clean up NFS4ERR_CB_PATH_DOWN error management...Trond Myklebust2008-12-231-3/+6
| | | | | | | Add a delegation cleanup phase to the state management loop, and do the NFS4ERR_CB_PATH_DOWN recovery there. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFSv4: Add recovery for individual stateidsTrond Myklebust2008-12-231-1/+1
| | | | | | | | | | | | | | | NFSv4 defines a number of state errors which the client does not currently handle. Among those we should worry about are: NFS4ERR_ADMIN_REVOKED - the server's administrator revoked our locks and/or delegations. NFS4ERR_BAD_STATEID - the client and server are out of sync, possibly due to a delegation return racing with an OPEN request. NFS4ERR_OPENMODE - the client attempted to do something not sanctioned by the open mode of the stateid. Should normally just occur as a result of a delegation return race. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFSv4: Remove nfs_client->cl_semTrond Myklebust2008-12-231-17/+0
| | | | | | | | | | Now that we're using the flags to indicate state that needs to be recovered, as well as having implemented proper refcounting and spinlocking on the state and open_owners, we can get rid of nfs_client->cl_sem. The only remaining case that was dubious was the file locking, and that case is now covered by the nfsi->rwsem. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFSv4: Ensure that file unlock requests don't conflict with state recoveryTrond Myklebust2008-12-231-0/+4
| | | | | | | | | | The unlock path is currently failing to take the nfs_client->cl_sem read lock, and hence the recovery path may see locks disappear from underneath it. Also ensure that it takes the nfs_inode->rwsem read lock so that it there is no conflict with delegation recalls. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFSv4: Ensure that nfs4_reclaim_open_state() doesn't depend on cl_semTrond Myklebust2008-12-231-1/+10
| | | | Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFSv4: Add a recovery marking scheme for state ownersTrond Myklebust2008-12-231-4/+17
| | | | Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFSv4: Don't tell server we rebooted when not necessaryTrond Myklebust2008-12-231-11/+11
| | | | | | Instead of doing a full setclientid, try doing a RENEW call first. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-08 21:59:46 +0000