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2014-01-13NFSv4.1: Don't trust attributes if a pNFS LAYOUTCOMMIT is outstandingTrond Myklebust1-0/+16
If a LAYOUTCOMMIT is outstanding, then chances are that the metadata server may still be returning incorrect values for the change attribute, ctime, mtime and/or size. Just ignore those attributes for now, and wait for the LAYOUTCOMMIT rpc call to finish. Reported-by: shaobingqing <shaobingqing@bwstor.com.cn> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
2013-06-28NFSv4.1 Fix gdia_maxcount calculation to fit in ca_maxresponsesizeAndy Adamson1-1/+2
The GETDEVICEINFO gdia_maxcount represents all of the data being returned within the GETDEVICEINFO4resok structure and includes the XDR overhead. The CREATE_SESSION ca_maxresponsesize is the maximum reply and includes the RPC headers (including security flavor credentials and verifiers). Split out the struct pnfs_device field maxcount which is the gdia_maxcount from the pglen field which is the reply (the total) buffer length. Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2013-06-06NFSv4.1: Use layout credentials for get_deviceinfo callsTrond Myklebust1-1/+2
This is not strictly needed, since get_deviceinfo is not allowed to return NFS4ERR_ACCESS or NFS4ERR_WRONG_CRED, but lets do it anyway for consistency with other pNFS operations. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2013-03-21NFSv4.1: Add a helper pnfs_commit_and_return_layoutTrond Myklebust1-0/+6
In order to be able to safely return the layout in nfs4_proc_setattr, we need to block new uses of the layout, wait for all outstanding users of the layout to complete, commit the layout and then return it. This patch adds a helper in order to do all this safely. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Cc: Boaz Harrosh <bharrosh@panasas.com>
2013-02-24pnfs: fix resend_to_mds for directioBenny Halevy1-2/+4
Pass the directio request on pageio_init to clean up the API. Percolate pg_dreq from original nfs_pageio_descriptor to the pnfs_{read,write}_done_resend_to_mds and use it on respective call to nfs_pageio_init_{read,write} on the newly created nfs_pageio_descriptor. Reproduced by command: mount -o vers=4.1 server:/ /mnt dd bs=128k count=8 if=/dev/zero of=/mnt/dd.out oflag=direct BUG: unable to handle kernel NULL pointer dereference at 0000000000000028 IP: [<ffffffffa021a3a8>] atomic_inc+0x4/0x9 [nfs] PGD 34786067 PUD 34794067 PMD 0 Oops: 0002 [#1] SMP Modules linked in: nfs_layout_nfsv41_files nfsv4 nfs nfsd lockd nfs_acl auth_rpcgss exportfs sunrpc btrfs zlib_deflate libcrc32c ipv6 autofs4 CPU 1 Pid: 259, comm: kworker/1:2 Not tainted 3.8.0-rc6 #2 Bochs Bochs RIP: 0010:[<ffffffffa021a3a8>] [<ffffffffa021a3a8>] atomic_inc+0x4/0x9 [nfs] RSP: 0018:ffff880038f8fa68 EFLAGS: 00010206 RAX: ffffffffa021a6a9 RBX: ffff880038f8fb48 RCX: 00000000000a0000 RDX: ffffffffa021e616 RSI: ffff8800385e9a40 RDI: 0000000000000028 RBP: ffff880038f8fa68 R08: ffffffff81ad6720 R09: ffff8800385e9510 R10: ffffffffa0228450 R11: ffff880038e87418 R12: ffff8800385e9a40 R13: ffff8800385e9a70 R14: ffff880038f8fb38 R15: ffffffffa0148878 FS: 0000000000000000(0000) GS:ffff88003e400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b CR2: 0000000000000028 CR3: 0000000034789000 CR4: 00000000000006e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process kworker/1:2 (pid: 259, threadinfo ffff880038f8e000, task ffff880038302480) Stack: ffff880038f8fa78 ffffffffa021a6bf ffff880038f8fa88 ffffffffa021bb82 ffff880038f8fae8 ffffffffa021f454 ffff880038f8fae8 ffffffff8109689d ffff880038f8fab8 ffffffff00000006 0000000000000000 ffff880038f8fb48 Call Trace: [<ffffffffa021a6bf>] nfs_direct_pgio_init+0x16/0x18 [nfs] [<ffffffffa021bb82>] nfs_pgheader_init+0x6a/0x6c [nfs] [<ffffffffa021f454>] nfs_generic_pg_writepages+0x51/0xf8 [nfs] [<ffffffff8109689d>] ? mark_held_locks+0x71/0x99 [<ffffffffa0148878>] ? rpc_release_resources_task+0x37/0x37 [sunrpc] [<ffffffffa021bc25>] nfs_pageio_doio+0x1a/0x43 [nfs] [<ffffffffa021be7c>] nfs_pageio_complete+0x16/0x2c [nfs] [<ffffffffa02608be>] pnfs_write_done_resend_to_mds+0x95/0xc5 [nfsv4] [<ffffffffa0148878>] ? rpc_release_resources_task+0x37/0x37 [sunrpc] [<ffffffffa028e27f>] filelayout_reset_write+0x8c/0x99 [nfs_layout_nfsv41_files] [<ffffffffa028e5f9>] filelayout_write_done_cb+0x4d/0xc1 [nfs_layout_nfsv41_files] [<ffffffffa024587a>] nfs4_write_done+0x36/0x49 [nfsv4] [<ffffffffa021f996>] nfs_writeback_done+0x53/0x1cc [nfs] [<ffffffffa021fb1d>] nfs_writeback_done_common+0xe/0x10 [nfs] [<ffffffffa028e03d>] filelayout_write_call_done+0x28/0x2a [nfs_layout_nfsv41_files] [<ffffffffa01488a1>] rpc_exit_task+0x29/0x87 [sunrpc] [<ffffffffa014a0c9>] __rpc_execute+0x11d/0x3cc [sunrpc] [<ffffffff810969dc>] ? trace_hardirqs_on_caller+0x117/0x173 [<ffffffffa014a39f>] rpc_async_schedule+0x27/0x32 [sunrpc] [<ffffffffa014a378>] ? __rpc_execute+0x3cc/0x3cc [sunrpc] [<ffffffff8105f8c1>] process_one_work+0x226/0x422 [<ffffffff8105f7f4>] ? process_one_work+0x159/0x422 [<ffffffff81094757>] ? lock_acquired+0x210/0x249 [<ffffffffa014a378>] ? __rpc_execute+0x3cc/0x3cc [sunrpc] [<ffffffff810600d8>] worker_thread+0x126/0x1c4 [<ffffffff8105ffb2>] ? manage_workers+0x240/0x240 [<ffffffff81064ef8>] kthread+0xb1/0xb9 [<ffffffff81064e47>] ? __kthread_parkme+0x65/0x65 [<ffffffff815206ec>] ret_from_fork+0x7c/0xb0 [<ffffffff81064e47>] ? __kthread_parkme+0x65/0x65 Code: 00 83 38 02 74 12 48 81 4b 50 00 00 01 00 c7 83 60 07 00 00 01 00 00 00 48 89 df e8 55 fe ff ff 5b 41 5c 5d c3 66 90 55 48 89 e5 <f0> ff 07 5d c3 55 48 89 e5 f0 ff 0f 0f 94 c0 84 c0 0f 95 c0 0f RIP [<ffffffffa021a3a8>] atomic_inc+0x4/0x9 [nfs] RSP <ffff880038f8fa68> CR2: 0000000000000028 Signed-off-by: Benny Halevy <bhalevy@tonian.com> Cc: stable@kernel.org [>= 3.6] Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2013-02-14NFSv4.1: Fix bulk recall and destroy of layoutsTrond Myklebust1-1/+6
The current code in pnfs_destroy_all_layouts() assumes that removing the layout from the server->layouts list is sufficient to make it invisible to other processes. This ignores the fact that most users access the layout through the nfs_inode->layout... There is further breakage due to lack of reference counting of the layouts, meaning that the whole thing Oopses at the drop of a hat. The code in initiate_bulk_draining() is almost correct, and can be used as a model for pnfs_destroy_all_layouts(), so move that code to pnfs.c, and refactor the code to allow us to choose between a single filesystem bulk recall, and a recall of all layouts. Also note that initiate_bulk_draining() currently calls iput() while holding locks. Fix that too. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Cc: stable@vger.kernel.org
2012-10-15NFSv4.1: Do not call pnfs_return_layout() from an rpciod contextTrond Myklebust1-0/+1
Move the call to pnfs_return_layout() to the read and write rpc_release() callbacks, so that it gets called from nfsiod, which is a more appropriate context. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-10-08NFS41: send real write size in layoutgetPeng Tao1-1/+2
For buffer write, block layout client scan inode mapping to find next hole and use offset-to-hole as layoutget length. Object layout client uses offset-to-isize as layoutget length. For direct write, both block layout and object layout use dreq->bytes_left. Signed-off-by: Peng Tao <tao.peng@emc.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-09-28NFSv4.1: Remove the NFS_LAYOUT_RETURNED stateTrond Myklebust1-19/+0
It serves no purpose that the test for whether or not we have valid layout segments doesn't already serve. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-09-28NFSv4.1: Get rid of the NFS_LAYOUT_DESTROYED stateTrond Myklebust1-7/+0
We already have a mechanism for blocking LAYOUTGET by means of the plh_block_lgets counter. The only "service" that NFS_LAYOUT_DESTROYED provides at this point is to block layoutget once the layout segment list is empty, which basically means that you have to wait until the pnfs_layout_hdr is destroyed before you can do pNFS on that file again. This patch enables the reuse of the pnfs_layout_hdr if the layout segment list is empty. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-09-28NFSv4.1: Get rid of pNFS layout state "NFS_LAYOUT_INVALID"Trond Myklebust1-1/+6
In all cases where we set NFS_LAYOUT_INVALID, we also set NFS_LAYOUT_DESTROYED. Furthermore, in all cases where we test for NFS_LAYOUT_INVALID, we should also be testing for NFS_LAYOUT_DESTROYED, since the latter means that we hold no valid layout segments. Ergo the two are redundant. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-09-28NFSv4.1: Fix a race in the pNFS return-on-close codeTrond Myklebust1-2/+2
If we sleep after dropping the inode->i_lock, then we are no longer atomic with respect to the rpc_wake_up() call in pnfs_layout_remove_lseg(). Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-09-28NFSv4.1: pNFS data servers may be temporarily offlineTrond Myklebust1-0/+4
In cases where the pNFS data server is just temporarily out of service, we want to mark it as such, and then try again later. Typically that will be in cases of network connection errors etc. This patch allows us to mark the devices as being "unavailable" for such transient errors, and will make them available for retries after a 2 minute timeout period. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-09-28NFSv4.1: Retry pNFS after a 2 minute timeoutTrond Myklebust1-0/+1
If we had to fall back to read/write through MDS, then assume that we should retry pNFS after a suitable timeout period. The following patch sets a timeout of 2 minutes. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-09-28NFSv4.1: Add helpers for setting/reading the I/O fail bitTrond Myklebust1-6/+0
...and make them local to the pnfs.c file. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-09-28NFSv4.1: Cleanup; add "pnfs_" prefix to put_lseg() and get_lseg()Trond Myklebust1-4/+4
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-09-28NFSv4.1: Cleanup; add "pnfs_" prefix to get_layout_hdr() and put_layout_hdr()Trond Myklebust1-2/+2
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-09-28NFSv4.1: Cleanup add a "pnfs_" prefix to mark_matching_lsegs_invalidTrond Myklebust1-1/+1
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-09-28NFS: Clean up the pNFS layoutget interfaceTrond Myklebust1-2/+2
Ensure that we do return errors from nfs4_proc_layoutget() and that we don't mark the layout as having failed if the error was due to a signal or resource problem on the client side. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-08-02pnfs: nfs4_proc_layoutget returns voidIdan Kedar1-1/+1
since the only user of nfs4_proc_layoutget is send_layoutget, which ignores its return value, there is no reason to return any value. Signed-off-by: Idan Kedar <idank@tonian.com> Signed-off-by: Benny Halevy <bhalevy@tonian.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-08-02pnfs: defer release of pages in layoutgetIdan Kedar1-1/+1
we have encountered a bug whereby reading a lot of files (copying fedora's /bin) from a pNFS mount and hitting Ctrl+C in the middle caused a general protection fault in xdr_shrink_bufhead. this function is called when decoding the response from LAYOUTGET. the decoding is done by a worker thread, and the caller of LAYOUTGET waits for the worker thread to complete. hitting Ctrl+C caused the synchronous wait to end and the next thing the caller does is to free the pages, so when the worker thread calls xdr_shrink_bufhead, the pages are gone. therefore, the cleanup of these pages has been moved to nfs4_layoutget_release. Signed-off-by: Idan Kedar <idank@tonian.com> Signed-off-by: Benny Halevy <bhalevy@tonian.com> Cc: stable@vger.kernel.org Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-07-16NFSv4.1 mark layout when already returnedAndy Adamson1-0/+19
When the file layout driver is fencing a DS, _pnfs_return_layout can be called mulitple times per inode due to in-flight i/o referencing lsegs on it's plh_segs list. Remember that LAYOUTRETURN has been called, and do not call it again. Allow LAYOUTRETURNs after a subsequent LAYOUTGET. Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-06-29NFS: Create an write_pageio_init() functionBryan Schumaker1-3/+3
pNFS needs to select a write function based on the layout driver currently in use, so I let each NFS version decide how to best handle initializing writes. Signed-off-by: Bryan Schumaker <bjschuma@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-06-29NFS: Create an read_pageio_init() functionBryan Schumaker1-3/+3
pNFS needs to select a read function based on the layout driver currently in use, so I let each NFS version decide how to best handle initializing reads. Signed-off-by: Bryan Schumaker <bjschuma@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-06-07NFS4: Fix open bug when pnfs module blacklistedFred Isaman1-1/+1
Signed-off-by: Fred Isaman <iisaman@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-05-24NFSv4.1 cache mdsthreshold values on OPENAndy Adamson1-0/+21
Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-05-19NFSv4.1 resend LAYOUTGET on data server invalid layout errorsAndy Adamson1-0/+1
The "invalid layout" class of errors is handled by destroying the layout and getting a new layout from the server. Currently, the layout must be destroyed before a new layout can be obtained. This means that all references (e.g.lsegs) to the "to be destroyed" layout header must be dropped before it can be destroyed. This in turn means waiting for all in flight RPC's using the old layout as well as draining the data server session slot table wait queue. Set the NFS_LAYOUT_INVALID flag to redirect I/O to the MDS while waiting for the old layout to be destroyed. Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-05-19NFSv4.1: mark deviceid invalid on filelayout DS connection errorsAndy Adamson1-0/+4
This prevents the use of any layout for i/o that references the deviceid. I/O is redirected through the MDS. Redirect the unhandled failed I/O to the MDS without marking either the layout or the deviceid invalid. Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-04-30NFS: pnfs_pageio_init_read() and init_write() need an extra argumentBryan Schumaker1-2/+4
This is only when CONFIG_NFS_V4_1 isn't enabled. Signed-off-by: Bryan Schumaker <bjschuma@netapp.com> Acked-by: Fred Isaman <iisaman@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-04-27NFS: rewrite directio write to use async coalesce codeFred Isaman1-0/+17
This also has the advantage that it allows directio to use pnfs. Signed-off-by: Fred Isaman <iisaman@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-04-27NFS: create struct nfs_commit_infoFred Isaman1-24/+48
It is COMMIT that is handled the most differently between the paged and direct paths. Create a structure that encapsulates everything either path needs to know about the commit state. We could use void to hide some of the layout driver stuff, but Trond suggests pulling it out to ensure type checking, given the huge changes being made, and the fact that it doesn't interfere with other drivers. Signed-off-by: Fred Isaman <iisaman@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-04-27NFS: create completion structure to pass into page_init functionsFred Isaman1-2/+4
Factors out the code that will need to change when directio starts using these code paths. This will allow directio to use the generic pagein and flush routines Signed-off-by: Fred Isaman <iisaman@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-03-21NFS: Fix more NFS debug related build warningsTrond Myklebust1-1/+7
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-03-20NFS: Use cond_resched_lock() to reduce latencies in the commit scansTrond Myklebust1-4/+4
Ensure that we conditionally drop the inode->i_lock when it is safe to do so in the commit loops. We do so after locking the nfs_page, but before removing it from the commit list. We can then use list_safe_reset_next to recover the loop after the lock is retaken. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-03-17NFSv4.1: Clean ups and bugfixes for the pNFS read/writeback/commit codeTrond Myklebust1-27/+28
Move more pnfs-isms out of the generic commit code. Bugfixes: - filelayout_scan_commit_lists doesn't need to get/put the lseg. In fact since it is run under the inode->i_lock, the lseg_put() can deadlock. - Ensure that we distinguish between what needs to be done for commit-to-data server and what needs to be done for commit-to-MDS using the new flag PG_COMMIT_TO_DS. Otherwise we may end up calling put_lseg() on a bucket for a struct nfs_page that got written through the MDS. - Fix a case where we were using list_del() on an nfs_page->wb_list instead of list_del_init(). - filelayout_initiate_commit needs to call filelayout_commit_release on error instead of the mds_ops->rpc_release(). Otherwise it won't clear the commit lock. Cleanups: - Let the files layout manage the commit lists for the pNFS case. Don't expose stuff like pnfs_choose_commit_list, and the fact that the commit buckets hold references to the layout segment in common code. - Cast out the put_lseg() calls for the struct nfs_read/write_data->lseg into the pNFS layer from whence they came. - Let the pNFS layer manage the NFS_INO_PNFS_COMMIT bit. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Cc: Fred Isaman <iisaman@netapp.com>
2012-03-10NFS: remove nfs_inode radix treeFred Isaman1-40/+42
The radix tree is only being used to compile lists of reqs needing commit. It is simpler to just put the reqs directly into a list. Signed-off-by: Fred Isaman <iisaman@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-02-26NFSv4.1: Don't call nfs4_deviceid_purge_client() unless we're NFSv4.1Trond Myklebust1-3/+0
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-01-06pnfs-obj: Must return layout on IO errorBoaz Harrosh1-0/+1
As mandated by the standard. In case of an IO error, a pNFS objects layout driver must return it's layout. This is because all device errors are reported to the server as part of the layout return buffer. This is implemented the same way PNFS_LAYOUTRET_ON_SETATTR is done, through a bit flag on the pnfs_layoutdriver_type->flags member. The flag is set by the layout driver that wants a layout_return preformed at pnfs_ld_{write,read}_done in case of an error. (Though I have not defined a wrapper like pnfs_ld_layoutret_on_setattr because this code is never called outside of pnfs.c and pnfs IO paths) Without this patch 3.[0-2] Kernels leak memory and have an annoying WARN_ON after every IO error utilizing the pnfs-obj driver. [This patch is for 3.2 Kernel. 3.1/0 Kernels need a different patch] CC: Stable Tree <stable@kernel.org> Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2011-10-18pnfs: recoalesce when ld read pagelist failsPeng Tao1-1/+1
For pnfs pagelist read failure, we need to pg_recoalesce and resend IO to mds. Signed-off-by: Peng Tao <peng_tao@emc.com> Signed-off-by: Jim Rees <rees@umich.edu> Cc: stable@kernel.org [3.0] Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2011-10-18pnfs: recoalesce when ld write pagelist failsPeng Tao1-1/+1
For pnfs pagelist write failure, we need to pg_recoalesce and resend IO to mds. Signed-off-by: Peng Tao <peng_tao@emc.com> Signed-off-by: Jim Rees <rees@umich.edu> Cc: stable@kernel.org [3.0] Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2011-10-18pnfs: make _set_lo_fail genericPeng Tao1-0/+1
file layout and block layout both use it to set mark layout io failure bit. So make it generic. Signed-off-by: Peng Tao <peng_tao@emc.com> Signed-off-by: Jim Rees <rees@umich.edu> Cc: stable@kernel.org [3.0] Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2011-07-31NFS: Re-enable compilation of nfs with !CONFIG_NFS_V4 || !CONFIG_NFS_V4_1Trond Myklebust1-1/+1
Fix two recently introduced compile problems: Fix a typo in fs/nfs/pnfs.h Move the pnfs_blksize declaration outside the CONFIG_NFS_V4 section in struct nfs_server. Reported-by: Jens Axboe <jaxboe@fusionio.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-07-31pnfsblock: call and parse getdevicelistFred Isaman1-1/+0
Call GETDEVICELIST during mount, then call and parse GETDEVICEINFO for each device returned. [pnfsblock: get rid of deprecated xdr macros] Signed-off-by: Jim Rees <rees@umich.edu> [pnfsblock: fix pnfs_deviceid references] Signed-off-by: Fred Isaman <iisaman@citi.umich.edu> [pnfsblock: fix print format warnings for sector_t and size_t] [pnfs-block: #include <linux/vmalloc.h>] [pnfsblock: no PNFS_NFS_SERVER] Signed-off-by: Benny Halevy <bhalevy@panasas.com> [pnfsblock: fix bug determining size of striped volume] [pnfsblock: fix oops when using multiple devices] Signed-off-by: Fred Isaman <iisaman@citi.umich.edu> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Benny Halevy <bhalevy@tonian.com> [pnfsblock: get rid of vmap and deviceid->area structure] Signed-off-by: Peng Tao <peng_tao@emc.com> Signed-off-by: Jim Rees <rees@umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2011-07-31pnfs: cleanup_layoutcommitAndy Adamson1-0/+3
This gives layout driver a chance to cleanup structures they put in at encode_layoutcommit. Signed-off-by: Andy Adamson <andros@netapp.com> [fixup layout header pointer for layoutcommit] Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Benny Halevy <bhalevy@tonian.com> [rm inode and pnfs_layout_hdr args from cleanup_layoutcommit()] Signed-off-by: Jim Rees <rees@umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2011-07-31pnfs: add set-clear layoutdriver interfaceBenny Halevy1-2/+6
To allow layout driver to issue getdevicelist at mount time, and clean up at umount time. [fixup non NFS_V4_1 set_pnfs_layoutdriver definition] [pnfs: pass mntfh down the init_pnfs path] Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Benny Halevy <bhalevy@tonian.com> Signed-off-by: Jim Rees <rees@umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2011-07-31pnfs: GETDEVICELISTAndy Adamson1-0/+12
The block driver uses GETDEVICELIST Signed-off-by: Andy Adamson <andros@netapp.com> [pass struct nfs_server * to getdevicelist] [get machince creds for getdevicelist] [fix getdevicelist decode sizing] Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Benny Halevy <bhalevy@tonian.com> Signed-off-by: Jim Rees <rees@umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2011-07-31pnfs: let layoutcommit handle a list of lsegPeng Tao1-0/+2
There can be multiple lseg per file, so layoutcommit should be able to handle it. [Needed in v3.0] CC: Stable Tree <stable@kernel.org> Signed-off-by: Peng Tao <peng_tao@emc.com> Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: Jim Rees <rees@umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2011-07-31pnfs: save layoutcommit cred at layout header initPeng Tao1-1/+1
No need to save it for every lseg. No need to save it at every pnfs_set_layoutcommit. [Needed in v3.0] CC: Stable Tree <stable@kernel.org> Signed-off-by: Peng Tao <peng_tao@emc.com> Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: Jim Rees <rees@umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2011-07-31pnfs: save layoutcommit lwb at layout headerPeng Tao1-1/+1
No need to save it for every lseg. [Needed in v3.0] CC: Stable Tree <stable@kernel.org> Signed-off-by: Peng Tao <peng_tao@emc.com> Signed-off-by: Jim Rees <rees@umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2011-07-15NFS: Move the pnfs write code into pnfs.cTrond Myklebust1-9/+1
...and ensure that we recoalese to take into account differences in differences in block sizes when falling back to write through the MDS. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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