- 29 Jun, 2015 1 commit
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NeilBrown authored
It is possible to have an active open with one mode, and a delegation for the same file with a different mode. In particular, a WR_ONLY open and an RD_ONLY delegation. This happens if a WR_ONLY open is followed by a RD_ONLY open which provides a delegation, but is then close. When returning the delegation, we currently try to claim opens for every open type (n_rdwr, n_rdonly, n_wronly). As there is no harm in claiming an open for a mode that we already have, this is often simplest. However if the delegation only provides a subset of the modes that we currently have open, this will produce an error from the server. So when claiming open modes prior to returning a delegation, skip the open request if the mode is not covered by the delegation - the open_stateid must already cover that mode, so there is nothing to do. Signed-off-by:
NeilBrown <neilb@suse.de> Signed-off-by:
Trond Myklebust <trond.myklebust@primarydata.com>
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- 27 Jun, 2015 2 commits
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Trond Myklebust authored
Make it so, by checking the return value for NFS4ERR_MOTSUPP and caching the information as a server capability. Signed-off-by: -
Trond Myklebust authored
According to the spec, the server is only returning the status, which we decode in the op header. Signed-off-by:
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- 26 Jun, 2015 5 commits
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Trond Myklebust authored
hdr->good_bytes needs to be set to the length of the request, not zero. Cc: stable@vger.kernel.org # 4.0+ Signed-off-by: -
Trond Myklebust authored
This patch ensures that we record the value of 'ffl_flags' from the layout, and then checks for the presence of the FF_FLAGS_NO_LAYOUTCOMMIT flag before deciding whether or not to call pnfs_set_layoutcommit(). The effect is that servers now can decide whether or not they want the client to call layoutcommit before returning a writeable layout. Signed-off-by: -
Trond Myklebust authored
* layoutstats: pnfs/flexfiles: protect ktime manipulation with mirror lock nfs: provide pnfs_report_layoutstat when NFS42 is disabled pnfs/flexfiles: report layoutstat regularly nfs42: serialize LAYOUTSTATS calls of the same file pnfs/flexfiles: encode LAYOUTSTATS flexfiles specific data pnfs/flexfiles: add ff_layout_prepare_layoutstats pNFS/flexfiles: track when layout is first used pNFS/flexfiles: add layoutstats tracking pNFS/flexfiles: Remove unused struct members user_name, group_name pnfs: add pnfs_report_layoutstat helper function pNFS: fill in nfs42_layoutstat_ops NFSv.2/pnfs Add a LAYOUTSTATS rpc function
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Peng Tao authored
It looks as if xchg() and cmpxchg() are not available for 64-bit integers on sparc32: > New breakage seen in linux-next today: > > ERROR: "__xchg_called_with_bad_pointer" [fs/nfs/flexfilelayout/nfs_layout_flexfiles.ko] undefined! > ERROR: "__cmpxchg_called_with_bad_pointer" [fs/nfs/flexfilelayout/nfs_layout_flexfiles.ko] undefined! > make[2]: *** [__modpost] Error 1 > make[1]: *** [modules] Error 2 Given that mirror ktime manipulation is already under mirror->lock, let's make use of the fact. Reported-by:
Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by:
Peng Tao <tao.peng@primarydata.com> Signed-off-by:
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Peng Tao authored
kbuild test robot reported: fs/built-in.o: In function `pnfs_report_layoutstat': >> (.text+0x151a1c): undefined reference to `nfs42_proc_layoutstats_generic' Reported-by:
kbuild test robot <fengguang.wu@intel.com> Signed-off-by:
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- 25 Jun, 2015 3 commits
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Benjamin Coddington authored
Commit 9597c13b forbade opens with O_APPEND|O_DIRECT for NFSv4: nfs: verify open flags before allowing an atomic open Currently, you can open a NFSv4 file with O_APPEND|O_DIRECT, but cannot fcntl(F_SETFL,...) with those flags. This flag combination is explicitly forbidden on NFSv3 opens, and it seems like it should also be on NFSv4. However, you can still open a file with O_DIRECT|O_APPEND if there exists a cached dentry for the file because nfs4_file_open() is used instead of nfs_atomic_open() and the check is bypassed. Add the check in nfs4_file_open() as well. Signed-off-by:
Benjamin Coddington <bcodding@redhat.com> Signed-off-by:
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Jeff Layton authored
A ds can be associated with more than one mirror, but we currently skip setting a mirror's credentials if we find that it's already set up with a connected client. The upshot is that we can end up sending DS writes with MDS credentials instead of properly setting them up. Fix nfs4_ff_layout_prepare_ds to always verify that the mirror's credentials are set up, even when we have a DS that's already connected. Reported-by:
Tom Haynes <thomas.haynes@primarydata.com> Signed-off-by:
Jeff Layton <jeff.layton@primarydata.com> Cc: stable@vger.kernel.org # 4.0+ Signed-off-by:
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Jeff Layton authored
If we have two tasks racing to update a mirror's credentials, then they can end up leaking one (or more) sets of credentials. The first task will set mirror->cred and then the second task will just overwrite it. Use a cmpxchg to ensure that the creds are only set once. If we get to the point where we would set mirror->cred and find that they're already set, then we just release the creds that were just found. Signed-off-by:
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- 24 Jun, 2015 10 commits
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Peng Tao authored
As a simple scheme, report every minute if IO is still going on. Reviewed-by:
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Peng Tao authored
There is no need to report concurrently. Reviewed-by:
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Peng Tao authored
Reviewed-by:
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Peng Tao authored
It fills in the generic part of LAYOUTSTATS call. One thing to note is that we don't really track if IO is continuous or not. So just fake to use the completed bytes for it. Still missing flexfiles specific part, which will be included in the next patch. Reviewed-by:
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Peng Tao authored
So that we can report cumulative time since the beginning of statistics collection of the layout. Reviewed-by:
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Trond Myklebust authored
Reviewed-by:
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Trond Myklebust authored
Reviewed-by:
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Peng Tao authored
Reviewed-by:
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Peng Tao authored
Reviewed-by:
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Trond Myklebust authored
Reviewed-by:
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- 22 Jun, 2015 1 commit
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Trond Myklebust authored
* bugfixes: NFS: Ensure we set NFS_CONTEXT_RESEND_WRITES when requeuing writes pNFS: Fix a memory leak when attempted pnfs fails NFS: Ensure that we update the sequence id under the slot table lock nfs: Initialize cb_sequenceres information before validate_seqid() nfs: Only update callback sequnce id when CB_SEQUENCE success NFSv4: nfs4_handle_delegation_recall_error should ignore EAGAIN
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- 20 Jun, 2015 1 commit
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Trond Myklebust authored
Use the TCP_USER_TIMEOUT socket option to advertise to the server how long we will keep the connection open if there is unacknowledged data. See RFC5482. Signed-off-by:
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- 19 Jun, 2015 2 commits
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Trond Myklebust authored
This fixes a regression introduced by commit caf4ccd4 ("SUNRPC: Make xs_tcp_close() do a socket shutdown rather than a sock_release"). Prior to that commit, the autoclose feature would ensure that an idle connection would result in the socket being both disconnected and released, whereas now only gets disconnected. While the current behaviour is harmless, it does leave the port bound until either RPC traffic resumes or the RPC client is shut down. Reported-by:
Steven Rostedt <rostedt@goodmis.org> Signed-off-by:
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Trond Myklebust authored
If the back channel is disconnected, we can and should just fail the transmission. The expectation is that the NFSv4.1 server will always retransmit any outstanding callbacks once the connection is re-established. Signed-off-by:
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- 18 Jun, 2015 4 commits
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Yijing Wang authored
Signed-off-by:
Yijing Wang <wangyijing@huawei.com> Signed-off-by:
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Fabian Frederick authored
Don't opencode sg_init_one() Signed-off-by:
Fabian Frederick <fabf@skynet.be> Signed-off-by:
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Trond Myklebust authored
If a write attempt fails, and the write is queued up for resending to the server, as opposed to being dropped, then we need to set the appropriate flag so that nfs_file_fsync() does the right thing. Cc: stable@vger.kernel.org Signed-off-by: -
Trond Myklebust authored
pnfs_do_write() expects the call to pnfs_write_through_mds() to free the pgio header and to release the layout segment before exiting. The problem is that nfs_pgio_data_destroy() doesn't actually do this; it only frees the memory allocated by nfs_generic_pgio(). Ditto for pnfs_do_read()... Fix in both cases is to add a call to hdr->release(hdr). Cc: stable@vger.kernel.org Signed-off-by:
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- 16 Jun, 2015 11 commits
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git://git.linux-nfs.org/projects/anna/nfs-rdmaTrond Myklebust authored
NFS: NFSoRDMA Client Changes These patches continue to build up for improving the rsize and wsize that the NFS client uses when talking over RDMA. In addition, these patches also add in scalability enhancements and other bugfixes. Signed-off-by:
Anna Schumaker <Anna.Schumaker@Netapp.com> * tag 'nfs-rdma-for-4.2' of git://git.linux-nfs.org/projects/anna/nfs-rdma: (142 commits) xprtrdma: Reduce per-transport MR allocation xprtrdma: Stack relief in fmr_op_map() xprtrdma: Split rb_lock xprtrdma: Remove rpcrdma_ia::ri_memreg_strategy xprtrdma: Remove ->ro_reset xprtrdma: Remove unused LOCAL_INV recovery logic xprtrdma: Acquire MRs in rpcrdma_register_external() xprtrdma: Introduce an FRMR recovery workqueue xprtrdma: Acquire FMRs in rpcrdma_fmr_register_external() xprtrdma: Introduce helpers for allocating MWs xprtrdma: Use ib_device pointer safely xprtrdma: Remove rr_func xprtrdma: Replace rpcrdma_rep::rr_buffer with rr_rxprt xprtrdma: Warn when there are orphaned IB objects ...
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Trond Myklebust authored
Ensure that we fix the non-NULL stateid case as well. Signed-off-by: -
Olga Kornievskaia authored
Client can receives stateid-type error (eg., BAD_STATEID) on SETATTR when delegation stateid was used. When no open state exists, in case of application calling truncate() on the file, client has no state to recover and fails with EIO. Instead, upon such error, return the bad delegation and then resend the SETATTR with a zero stateid. Signed-off: Olga Kornievskaia <kolga@netapp.com> Signed-off-by: -
Kinglong Mee authored
A truncated fsid showing from /proc/fs/nfsfs/volumes as, NV SERVER PORT DEV FSID FSC v4 c0a80881 801 0:43 34931f044c2a439b no It should be as, NV SERVER PORT DEV FSID FSC v4 c0a80881 801 0:43 34931f044c2a439b:954c5d830fa4be8c no The max buffer length for storing "%llx:%llx" format should be 16 + 1 + 16 + 1 = 34 (16 for %llx, 1 for ':', 1 for '\0'). Also, for storing "%u:%u" of MAJOR() and MINOR() should be 8 + 1 + 3 + 1 = 13 (8 for 2^24, 1 for ':', 3 for 2^8, 1 for '\0'). v2, add comments for dev/fsid buffer and use sizeof in snprintf. Signed-off-by:
Kinglong Mee <kinglongmee@gmail.com> Signed-off-by:
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Jeff Layton authored
Change the uniform client string generator to dynamically allocate the NFSv4 client name string buffer. With this patch, we can eliminate the buffers that are embedded within the "args" structs and simply use the name string that is hanging off the client. This uniform string case is a little simpler than the nonuniform since we don't need to deal with RCU, but we do have two different cases, depending on whether there is a uniquifier or not. Signed-off-by:
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Jeff Layton authored
The way the *_client_string functions work is a little goofy. They build the string in an on-stack buffer and then use kstrdup to copy it. This is not only stack-heavy but artificially limits the size of the client name string. Change it so that we determine the length of the string, allocate it and then scnprintf into it. Since the contents of the nonuniform string depend on rcu-managed data structures, it's possible that they'll change between when we allocate the string and when we go to fill it. If that happens, free the string, recalculate the length and try again. If it the mismatch isn't resolved on the second try then just give up and return -EINVAL. Signed-off-by:
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Jeff Layton authored
The spec allows for up to NFS4_OPAQUE_LIMIT (1k). While we'll almost certainly never use that much, these ops are generally the only ones in the compound so we might as well allow for them to be that large. Also, the existing code didn't add in a word for the opaque length field for either name string. Fix that while we're in there. Signed-off-by:
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Jeff Layton authored
...instead of buffers that are part of their arg structs. We already hold a reference to the client, so we might as well use the allocated buffer. In the event that we can't allocate the clp->cl_owner_id, then just return -ENOMEM. Note too that we switch from a GFP_KERNEL allocation here to GFP_NOFS. It's possible we could end up trying to do a SETCLIENTID or EXCHANGE_ID in order to reclaim some memory, and the GFP_KERNEL allocations in the existing code could cause recursion back into NFS reclaim. Signed-off-by:
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Jeff Layton authored
The current buffer is much too small if you have a relatively long hostname. Bring it up to the size of the one that SETCLIENTID has. Cc: <stable@vger.kernel.org> Reported-by:
Michael Skralivetsky <michael.skralivetsky@primarydata.com> Signed-off-by:
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Fabian Frederick authored
Use kernel.h macro definition. Thanks to Julia Lawall for Coccinelle scripting support. Signed-off-by:
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Neil Brown authored
If the sending queue has a task without ->rq_cong set at the front, and then a number of tasks with ->rq_cong set such that they use the entire congestion window, then the queue deadlocks. The first entry cannot be processed until later entries complete. This scenario has been seen with a client using UDP to access a server, and the network connection breaking for a period of time - it doesn't recover. It never really makes sense for an ->rq_cong request to be on the ->sending queue, but it can happen when a request is being retried, and finds the transport if locked (XPRT_LOCKED). In this case we simple call __xprt_put_cong() and the deadlock goes away. Signed-off-by:
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