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* Merge branch 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6Linus Torvalds2011-04-082-36/+26Star
|\ | | | | | | | | | | | | * 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6: NFS: Change initial mount authflavor only when server returns NFS4ERR_WRONGSEC NFS: Fix a signed vs. unsigned secinfo bug Revert "net/sunrpc: Use static const char arrays"
| * NFS: Change initial mount authflavor only when server returns NFS4ERR_WRONGSECBryan Schumaker2011-04-071-3/+1Star
| | | | | | | | | | | | | | | | | | When attempting an initial mount, we should only attempt other authflavors if AUTH_UNIX receives a NFS4ERR_WRONGSEC error. This allows other errors to be passed back to userspace programs. Signed-off-by: Bryan Schumaker <bjschuma@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * NFS: Fix a signed vs. unsigned secinfo bugBryan Schumaker2011-04-061-33/+25Star
| | | | | | | | | | | | | | | | | | | | | | rpc_authflavor_t is cast from an unsigned int, but the initial code tried to use it as a signed int. I fix this by passing an rpc_authflavor_t pointer around, and returning signed integers from functions. Signed-off-by: Bryan Schumaker <bjschuma@netapp.com> Reported-by: Dan Carpenter <error27@gmail.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* | Fix common misspellingsLucas De Marchi2011-03-313-3/+3
|/ | | | | | Fixes generated by 'codespell' and manually reviewed. Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
* fs: don't use igrab() while holding i_lockDave Chinner2011-03-291-1/+2
| | | | | | | | | | | | | | | Fix the incorrect use of igrab() inside the i_lock in NFS and Ceph‥ If we are already holding the i_lock, we have a reference to the inode so we can safely use ihold() to gain an extra reference. This avoids hangs due to lock recursion on the i_lock now that the inode_lock is gone and igrab() uses the i_lock itself. Signed-off-by: Dave Chinner <dchinner@redhat.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: linux-fsdevel@vger.kernel.org Cc: Ryan Mallon <ryan@bluewatersys.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* NFS: Don't leak RPC clients in NFSv4 secinfo negotiationTrond Myklebust2011-03-271-1/+3
| | | | Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFS: Fix a hang in the writeback pathTrond Myklebust2011-03-272-12/+5Star
| | | | | | | | | | | | | | Now that the inode scalability patches have been merged, it is no longer safe to call igrab() under the inode->i_lock. Now that we no longer call nfs_clear_request() until the nfs_page is being freed, we know that we are always holding a reference to the nfs_open_context, which again holds a reference to the path, and so the inode cannot be freed until the last nfs_page has been removed from the radix tree and freed. We can therefore skip the igrab()/iput() altogether. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* Merge branch 'nfs-for-2.6.39' into nfs-for-nextTrond Myklebust2011-03-2415-189/+1190
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| * Cleanup XDR parsing for LAYOUTGET, GETDEVICEINFOWeston Andros Adamson2011-03-246-84/+226
| | | | | | | | | | | | | | | | | | changes LAYOUTGET and GETDEVICEINFO XDR parsing to: - not use vmap, which doesn't work on incoherent archs - use xdr_stream parsing for all xdr Signed-off-by: Weston Andros Adamson <dros@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * NFSv4.1 convert layoutcommit sync to booleanAndy Adamson2011-03-246-10/+12
| | | | | | | | | | Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * NFSv4.1 pnfs_layoutcommit_inode fixesAndy Adamson2011-03-241-11/+19
| | | | | | | | | | | | | | | | | | Test NFS_INO_LAYOUTCOMMIT before kzalloc Mark inode dirty to retry LAYOUTCOMMIT on kzalloc failure. Add comments. Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * NFSv4.1 remove temp code that prevented ds commitsFred Isaman2011-03-231-4/+0Star
| | | | | | | | | | | | | | | | Now that all the infrastructure is in place, we will do the right thing if we remove this special casing. Signed-off-by: Fred Isaman <iisaman@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * NFSv4.1: layoutcommitAndy Adamson2011-03-238-2/+362
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The filelayout driver sends LAYOUTCOMMIT only when COMMIT goes to the data server (as opposed to the MDS) and the data server WRITE is not NFS_FILE_SYNC. Only whole file layout support means that there is only one IOMODE_RW layout segment. Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Alexandros Batsakis <batsakis@netapp.com> Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: Dean Hildebrand <dhildeb@us.ibm.com> Signed-off-by: Fred Isaman <iisaman@citi.umich.edu> Signed-off-by: Mingyang Guo <guomingyang@nrchpc.ac.cn> Signed-off-by: Tao Guo <guotao@nrchpc.ac.cn> Signed-off-by: Zhang Jingwang <zhangjingwang@nrchpc.ac.cn> Tested-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Fred Isaman <iisaman@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * NFSv4.1: filelayout driver specific code for COMMITFred Isaman2011-03-235-7/+265
| | | | | | | | | | | | | | | | | | Implement all the hooks created in the previous patches. This requires exporting quite a few functions and adding a few structure fields. Signed-off-by: Fred Isaman <iisaman@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * NFSv4.1: remove GETATTR from ds commitsFred Isaman2011-03-233-7/+16
| | | | | | | | | | | | | | | | | | Any COMMIT compound directed to a data server needs to have the GETATTR calls suppressed. We here, make sure the field we are testing (data->lseg) is set and refcounted correctly. Signed-off-by: Fred Isaman <iisaman@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * NFSv4.1: add generic layer hooks for pnfs COMMITFred Isaman2011-03-233-17/+102
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We create three major hooks for the pnfs code. pnfs_mark_request_commit() is called during writeback_done from nfs_mark_request_commit, which gives the driver an opportunity to claim it wants control over commiting a particular req. pnfs_choose_commit_list() is called from nfs_scan_list to choose which list a given req should be added to, based on where we intend to send it for COMMIT. It is up to the driver to have preallocated list headers for each destination it may need. pnfs_commit_list() is how the driver actually takes control, it is used instead of nfs_commit_list(). In order to pass information between the above functions, we create a union in nfs_page to hold a lseg (which is possible because the req is not on any list while in transition), and add some flags to indicate if we need to use the pnfs code. Signed-off-by: Fred Isaman <iisaman@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * NFSv4.1: alloc and free commit_bucketsFred Isaman2011-03-232-0/+24
| | | | | | | | | | | | | | | | | | Create a preallocated list header to hold nfs_pages for each non-MDS COMMIT destination. Note this is not necessarily each DS, but is basically each <DS, fh> pair. Signed-off-by: Fred Isaman <iisaman@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * NFSv4.1: shift filelayout_free_lsegFred Isaman2011-03-231-10/+10
| | | | | | | | | | | | | | Move it up to avoid forward declaration in later patch. Signed-off-by: Fred Isaman <iisaman@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * NFSv4.1: pull out code from nfs_commit_releaseFred Isaman2011-03-231-3/+9
| | | | | | | | | | | | | | | | Create a separate support function for later use by data server commit code. Signed-off-by: Fred Isaman <iisaman@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * NFSv4.1: pull error handling out of nfs_commit_listFred Isaman2011-03-231-10/+16
| | | | | | | | | | | | | | | | Create a separate support function for later use by data server commit code. Signed-off-by: Fred Isaman <iisaman@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * NFSv4.1: add callback to nfs4_commit_doneFred Isaman2011-03-231-4/+10
| | | | | | | | | | | | | | | | Add a callback that the pnfs layout driver can use to do its own error handling of the data server's COMMIT response. Signed-off-by: Fred Isaman <iisaman@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * NFSv4.1: rearrange nfs_commit_rpcsetupFred Isaman2011-03-231-27/+33
| | | | | | | | | | | | | | Reorder nfs_commit_rpcsetup, preparing for a pnfs entry point. Signed-off-by: Fred Isaman <iisaman@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * NFSv4.1: don't send COMMIT to ds for data sync writesFred Isaman2011-03-231-1/+4
| | | | | | | | | | | | | | | | | | Based on consensus reached in Feb 2011 interim IETF meeting regarding use of LAYOUTCOMMIT, it has been decided that a NFS_DATA_SYNC return from a WRITE to data server should not initiate a COMMIT. Signed-off-by: Fred Isaman <iisaman@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * NFS: Detect loops in a readdir due to bad cookiesBryan Schumaker2011-03-231-1/+27
| | | | | | | | | | | | | | | | | | | | Some filesystems (such as ext4) can return the same cookie value for multiple files. If we try to start a readdir with one of these cookies, the server will return the first file found with a cookie of the same value. This can cause the client to enter an infinite loop. Signed-off-by: Bryan Schumaker <bjschuma@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * NFS: Create nfs_open_dir_contextBryan Schumaker2011-03-232-8/+47
| | | | | | | | | | | | | | | | | | | | | | nfs_opendir() created a context that held much more information than we need for a readdir. This patch introduces a slimmed-down nfs_open_dir_context that contains only the cookie and the cred used for RPC operations. The new context will eventually be used to help detect readdir loops. Signed-off-by: Bryan Schumaker <bjschuma@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * NFS: Ensure that we update the readdir filp->f_pos correctlyTrond Myklebust2011-03-231-1/+2
| | | | | | | | | | | | | | | | | | If we're doing a search by readdir cookie, we need to ensure that the resulting f_pos is updated. To do so, we need to update the desc->current_index, in the same way that we do in the search by file offset case. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * nfs4: Fix NULL dereference at d_alloc_and_lookup()Gusev Vitaliy2011-03-231-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | d_alloc_and_lookup() calls i_op->lookup method due to rootfh changes his fsid. During mount i_op of NFS root inode is set to nfs_mountpoint_inode_operations, if rpc_ops->getroot() and rpc_ops->getattr() return different fsid. After that nfs_follow_remote_path() raised oops: BUG: unable to handle kernel NULL pointer dereference at (null) IP: [< (null)>] (null) stack trace: d_alloc_and_lookup+0x4c/0x74 do_lookup+0x1e3/0x280 link_path_walk+0x12e/0xab0 nfs4_remote_get_sb+0x56/0x2c0 [nfs] path_walk+0x67/0xe0 vfs_path_lookup+0x8e/0x100 nfs_follow_remote_path+0x16f/0x3e0 [nfs] nfs4_try_mount+0x6f/0xd0 [nfs] nfs_get_sb+0x269/0x400 [nfs] vfs_kern_mount+0x8a/0x1f0 do_kern_mount+0x52/0x130 do_mount+0x20a/0x260 sys_mount+0x90/0xe0 system_call_fastpath+0x16/0x1b So just refresh fsid, as RFC3530 doesn't specify behavior in case of rootfh changes fsid. Signed-off-by: Vitaliy Gusev <gusev.vitaliy@nexenta.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * NFS: Fix a hang/infinite loop in nfs_wb_page()Trond Myklebust2011-03-221-12/+19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When one of the two waits in nfs_commit_inode() is interrupted, it returns a non-negative value, which causes nfs_wb_page() to think that the operation was successful causing it to busy-loop rather than exiting. It also causes nfs_file_fsync() to incorrectly report the file as being successfully committed to disk. This patch fixes both problems by ensuring that we return an error if the attempts to wait fail. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Cc: stable@kernel.org
| * FS: Use stable writes when not doing a bulk flushTrond Myklebust2011-03-222-3/+16
| | | | | | | | | | | | | | | | | | If we're only doing a single write, and there are no other unstable writes being queued up, we might want to just flip to using a stable write RPC call. Reviewed-by: NeilBrown <neilb@suse.de> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* | NFS: Determine initial mount securityBryan Schumaker2011-03-241-2/+31
| | | | | | | | | | | | | | | | | | When sec=<something> is not presented as a mount option, we should attempt to determine what security flavor the server is using. Signed-off-by: Bryan Schumaker <bjschuma@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* | NFS: use secinfo when crossing mountpointsBryan Schumaker2011-03-245-11/+142
| | | | | | | | | | | | | | | | | | A submount may use different security than the parent mount does. We should figure out what sec flavor the submount uses at mount time. Signed-off-by: Bryan Schumaker <bjschuma@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* | NFS: Add secinfo procedureBryan Schumaker2011-03-242-0/+170
| | | | | | | | | | | | | | | | This patch adds the nfs4 operation secinfo as a valid nfs rpc operation. Signed-off-by: Bryan Schumaker <bjschuma@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* | NFS: lookup supports alternate clientBryan Schumaker2011-03-247-48/+59
| | | | | | | | | | | | | | | | | | A later patch will need to perform a lookup using an alternate client with a different security flavor. This patch adds support for doing that on NFS v4. Signed-off-by: Bryan Schumaker <bjschuma@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* | NFS: convert call_sync() to a functionBryan Schumaker2011-03-241-23/+30
| | | | | | | | | | | | | | | | | | | | | | | | This patch changes nfs4_call_sync() from a macro into a static inline function. As a macro, the call_sync() function will not do any type checking and depends on the sequence arguments always having the same name. As a function, we get to have type checking and can rename the arguments if we so choose. Signed-off-by: Bryan Schumaker <bjschuma@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* | nfs: lock() vs unlock() typoDan Carpenter2011-03-211-2/+2
| | | | | | | | | | | | | | These should be spin_unlock() instead of spin_lock(). It's a typo. Signed-off-by: Dan Carpenter <error27@gmail.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | Merge branch 'nfs-for-2.6.39' of ↵Linus Torvalds2011-03-1822-692/+1434
|\| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.linux-nfs.org/projects/trondmy/nfs-2.6 * 'nfs-for-2.6.39' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6: (54 commits) RPC: killing RPC tasks races fixed xprt: remove redundant check SUNRPC: Convert struct rpc_xprt to use atomic_t counters SUNRPC: Ensure we always run the tk_callback before tk_action sunrpc: fix printk format warning xprt: remove redundant null check nfs: BKL is no longer needed, so remove the include NFS: Fix a warning in fs/nfs/idmap.c Cleanup: Factor out some cut-and-paste code. cleanup: save 60 lines/100 bytes by combining two mostly duplicate functions. NFS: account direct-io into task io accounting gss:krb5 only include enctype numbers in gm_upcall_enctypes RPCRDMA: Fix FRMR registration/invalidate handling. RPCRDMA: Fix to XDR page base interpretation in marshalling logic. NFSv4: Send unmapped uid/gids to the server when using auth_sys NFSv4: Propagate the error NFS4ERR_BADOWNER to nfs4_do_setattr NFSv4: cleanup idmapper functions to take an nfs_server argument NFSv4: Send unmapped uid/gids to the server if the idmapper fails NFSv4: If the server sends us a numeric uid/gid then accept it NFSv4.1: reject zero layout with zeroed stripe unit ...
| * nfs: BKL is no longer needed, so remove the includeStephen Rothwell2011-03-151-1/+0Star
| | | | | | | | | | Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * Cleanup: Factor out some cut-and-paste code.Rob Landley2011-03-111-111/+44Star
| | | | | | | | | | | | | | | | Factor out some cut-and-paste code in options parsing. Saves about 800 bytes on x86-64. Signed-off-by: Rob Landley <rlandley@parallels.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * cleanup: save 60 lines/100 bytes by combining two mostly duplicate functions.Rob Landley2011-03-111-96/+33Star
| | | | | | | | | | | | | | | | | | Eliminate two mostly duplicate functions (nfs_parse_simple_hostname() and nfs_parse_protected_hostname()) and instead just make the calling function (nfs_parse_devname()) do everything. Signed-off-by: Rob Landley <rlandley@parallels.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * NFS: account direct-io into task io accountingKonstantin Khlebnikov2011-03-111-0/+5
| | | | | | | | | | | | | | | | | | | | | | Account NFS direct-io reads and writes into Task I/O Accounting. Do it before complition to handle aio. NFS have unusual direct-io implementation, thus accounting in generic code does not work. Signed-off-by: Konstantin Khlebnikov <khlebnikov@openvz.org> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * NFSv4: Send unmapped uid/gids to the server when using auth_sysTrond Myklebust2011-03-113-9/+46
| | | | | | | | | | | | | | | | | | | | The new behaviour is enabled using the new module parameter 'nfs4_disable_idmapping'. Note that if the server rejects an unmapped uid or gid, then the client will automatically switch back to using the idmapper. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * NFSv4: Propagate the error NFS4ERR_BADOWNER to nfs4_do_setattrTrond Myklebust2011-03-112-2/+3
| | | | | | | | | | | | | | | | | | | | This will be required in order to switch uid/gid mapping back on if the admin has tried to disable it. Note that we also propagate NFS4ERR_BADNAME at the same time, in order to work around a Linux server bug. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * NFSv4: cleanup idmapper functions to take an nfs_server argumentTrond Myklebust2011-03-112-22/+20Star
| | | | | | | | | | | | ...instead of the nfs_client. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * NFSv4: Send unmapped uid/gids to the server if the idmapper failsTrond Myklebust2011-03-111-4/+26
| | | | | | | | Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * NFSv4: If the server sends us a numeric uid/gid then accept itTrond Myklebust2011-03-111-2/+26
| | | | | | | | Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * NFSv4.1: reject zero layout with zeroed stripe unitBenny Halevy2011-03-111-2/+2
| | | | | | | | | | | | | | | | | | Allowing stripe_unit==0 causes the client to crash later on when dividing by zero. Reported-by: Marc Eshel <eshel@almaden.ibm.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * NFSv4.1: Clear lseg pointer in ->doio functionFred Isaman2011-03-113-1/+4
| | | | | | | | | | | | | | | | Now that we have access to the pointer, clear it immediately after the put, instead of in caller. Signed-off-by: Fred Isaman <iisaman@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * NFSv4.1: rearrange ->doio argsFred Isaman2011-03-113-37/+43
| | | | | | | | | | | | | | | | This will make it possible to clear the lseg pointer in the same function as it is put, instead of in the caller nfs_pageio_doio(). Signed-off-by: Fred Isaman <iisaman@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * NFSv4.1: pnfs filelayout driver writeFred Isaman2011-03-114-2/+126
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Allows the pnfs filelayout driver to write to the data servers. Note that COMMIT to data servers will be implemented in a future patch. To avoid improper behavior, for the moment any WRITE to a data server that would also require a COMMIT to the data server is sent NFS_FILE_SYNC. Signed-off-by: Andy Adamson <andros@citi.umich.edu> Signed-off-by: Dean Hildebrand <dhildeb@us.ibm.com> Signed-off-by: Fred Isaman <iisaman@citi.umich.edu> Signed-off-by: Mingyang Guo <guomingyang@nrchpc.ac.cn> Signed-off-by: Oleg Drokin <green@linuxhacker.ru> Signed-off-by: Ricardo Labiaga <Ricardo.Labiaga@netapp.com> Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Fred Isaman <iisaman@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * NFSv4.1: remove GETATTR from ds writesFred Isaman2011-03-112-4/+10
| | | | | | | | | | | | | | | | Any WRITE compound directed to a data server needs to have the GETATTR calls suppressed. Signed-off-by: Fred Isaman <iisaman@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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