- 15 6月, 2011 3 次提交
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由 Benny Halevy 提交于
We always get a reference on the layout header and we rely on nfs4_layoutreturn_release to put it. If we hit an allocation error before starting the rpc proc we bail out early without dereferncing the layout header properly. Signed-off-by: NBenny Halevy <benny@tonian.com> Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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由 Benny Halevy 提交于
The break condition to skip out of the loop got broken when cmp_layout was change. Essentially, we want to stop looking once we know no layout on the remainder of the list can match the first byte of the looked-up range. Reported-by: NPeng Tao <peng_tao@emc.com> Signed-off-by: NBenny Halevy <benny@tonian.com> Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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由 Fred Isaman 提交于
_pnfs_return_layout had the following problems: - it did not call pnfs_free_lseg_list on all paths - it unintentionally did a forgetful return when there was no outstanding io - it raced with concurrent LAYOUTGETS Signed-off-by: NFred Isaman <iisaman@netapp.com> Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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- 30 5月, 2011 9 次提交
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由 Benny Halevy 提交于
Signed-off-by: NBenny Halevy <bhalevy@panasas.com>
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由 Benny Halevy 提交于
Signed-off-by: NBenny Halevy <bhalevy@panasas.com>
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由 Benny Halevy 提交于
Use common code for pnfs_pageio_init_{read,write} and use a common generic pg_test function. Note that this function always assumes the the layout driver's pg_test method is implemented. [Fix BUG] Signed-off-by: NBoaz Harrosh <bharrosh@panasas.com> Signed-off-by: NBenny Halevy <bhalevy@panasas.com>
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由 Benny Halevy 提交于
NFSv4.1 LAYOUTRETURN implementation Currently, does not support layout-type payload encoding. Signed-off-by: NAlexandros Batsakis <batsakis@netapp.com> Signed-off-by: NAndy Adamson <andros@citi.umich.edu> Signed-off-by: NAndy Adamson <andros@netapp.com> Signed-off-by: NDean Hildebrand <dhildeb@us.ibm.com> Signed-off-by: NFred Isaman <iisaman@citi.umich.edu> Signed-off-by: NFred Isaman <iisaman@netapp.com> Signed-off-by: NMarc Eshel <eshel@almaden.ibm.com> Signed-off-by: NZhang Jingwang <zhangjingwang@nrchpc.ac.cn> [call pnfs_return_layout right before pnfs_destroy_layout] [remove assert_spin_locked from pnfs_clear_lseg_list] [remove wait parameter from the layoutreturn path.] [remove return_type field from nfs4_layoutreturn_args] [remove range from nfs4_layoutreturn_args] [no need to send layoutcommit from _pnfs_return_layout] [don't wait on sync layoutreturn] [fix layout stateid in layoutreturn args] [fixed NULL deref in _pnfs_return_layout] [removed recaim member of nfs4_layoutreturn_args] Signed-off-by: NBenny Halevy <bhalevy@panasas.com>
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由 Benny Halevy 提交于
Non-rpc layout driver such as for objects and blocks implement their own I/O path and error handling logic. Therefore bypass NFS-based error handling for these layout drivers. [fix lseg ref-count bugs, and null de-refs] [Fall out from: non-rpc layout drivers] Signed-off-by: NBoaz Harrosh <bharrosh@panasas.com> [get rid of PNFS_USE_RPC_CODE] [get rid of __nfs4_write_done_cb] [revert useless change in nfs4_write_done_cb] Signed-off-by: NBenny Halevy <bhalevy@panasas.com>
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由 Benny Halevy 提交于
[gfp_flags] Signed-off-by: NBenny Halevy <bhalevy@panasas.com>
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由 Benny Halevy 提交于
Use recalled range to invalidate particular layout segments in the layout cache. Signed-off-by: NBenny Halevy <bhalevy@panasas.com>
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由 Benny Halevy 提交于
Signed-off-by: NBenny Halevy <bhalevy@panasas.com>
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由 Benny Halevy 提交于
Add offset and count parameters to pnfs_update_layout and use them to get the layout in the pageio path. Order cache layout segments in the following order: * offset (ascending) * length (descending) * iomode (RW before READ) Test byte range against the layout segment in use in pnfs_{read,write}_pg_test so not to coalesce pages not using the same layout segment. [fix lseg ordering] [clean up pnfs_find_lseg lseg arg] [remove unnecessary FIXME] [fix ordering in pnfs_insert_layout] [clean up pnfs_insert_layout] Signed-off-by: NBenny Halevy <bhalevy@panasas.com>
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- 28 5月, 2011 1 次提交
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由 Vitaliy Gusev 提交于
A client sends offset to MDS as it was seen by DS. As result, file size after copy is only half of original file size in case of 2 DS. Signed-off-by: NVitaliy Gusev <gusev.vitaliy@nexenta.com> Cc: stable@kernel.org [2.6.39] Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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- 12 5月, 2011 2 次提交
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由 Trond Myklebust 提交于
Currently, writebacks may end up recursing back into the filesystem due to GFP_KERNEL direct reclaims in the pnfs subsystem. Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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由 Andy Adamson 提交于
Prevents an infinite loop as list was never emptied. Signed-off-by: NAndy Adamson <andros@netapp.com> Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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- 14 4月, 2011 1 次提交
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由 Weston Andros Adamson 提交于
mark_inode_dirty_sync() grabs the same inode lock! race conditions between holding the lock in pnfs_set_layoutcommit() and in mark_inode_dirty_sync() can result in a second call to pnfs_layoutcommit_inode(), but this will be a noop as NFS_INO_LAYOUTCOMMIT won't be set in the second call Signed-off-by: NWeston Andros Adamson <dros@netapp.com> Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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- 25 3月, 2011 3 次提交
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由 Weston Andros Adamson 提交于
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: NWeston Andros Adamson <dros@netapp.com> Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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由 Andy Adamson 提交于
Signed-off-by: NAndy Adamson <andros@netapp.com> Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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由 Andy Adamson 提交于
Test NFS_INO_LAYOUTCOMMIT before kzalloc Mark inode dirty to retry LAYOUTCOMMIT on kzalloc failure. Add comments. Signed-off-by: NAndy Adamson <andros@netapp.com> Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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- 24 3月, 2011 2 次提交
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由 Andy Adamson 提交于
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: NAndy Adamson <andros@netapp.com> Signed-off-by: NAlexandros Batsakis <batsakis@netapp.com> Signed-off-by: NBoaz Harrosh <bharrosh@panasas.com> Signed-off-by: NDean Hildebrand <dhildeb@us.ibm.com> Signed-off-by: NFred Isaman <iisaman@citi.umich.edu> Signed-off-by: NMingyang Guo <guomingyang@nrchpc.ac.cn> Signed-off-by: NTao Guo <guotao@nrchpc.ac.cn> Signed-off-by: NZhang Jingwang <zhangjingwang@nrchpc.ac.cn> Tested-by: NBoaz Harrosh <bharrosh@panasas.com> Signed-off-by: NBenny Halevy <bhalevy@panasas.com> Signed-off-by: NFred Isaman <iisaman@netapp.com> Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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由 Fred Isaman 提交于
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: NFred Isaman <iisaman@netapp.com> Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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- 12 3月, 2011 12 次提交
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由 Andy Adamson 提交于
Signed-off-by: NAndy Adamson <andros@citi.umich.edu> Signed-off-by: NBoaz Harrosh <bharrosh@panasas.com> Signed-off-by: NDean Hildebrand <dhildeb@us.ibm.com> Signed-off-by: NFred Isaman <iisaman@citi.umich.edu> Signed-off-by: NJ. Bruce Fields <bfields@fieldses.org> Signed-off-by: NMike Sager <sager@netapp.com> Signed-off-by: NRicardo Labiaga <Ricardo.Labiaga@netapp.com> Signed-off-by: NTao Guo <guotao@nrchpc.ac.cn> Signed-off-by: NAndy Adamson <andros@netapp.com> Signed-off-by: NBenny Halevy <bhalevy@panasas.com> Signed-off-by: NFred Isaman <iisaman@netapp.com> Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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由 Fred Isaman 提交于
Signed-off-by: NFred Isaman <iisaman@netapp.com> Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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由 Andy Adamson 提交于
If a data server is unavailable, go through MDS. Mark the deviceid containing the data server as a negative cache entry. Do not try to connect to any data server on a deviceid marked as a negative cache entry. Mark any layout that tries to use the marked deviceid as failed. Inodes with a layout marked as fails will not use the layout for I/O, and will not perform any more layoutgets. Inodes without a layout will still do layoutget, but the layout will get marked immediately. Signed-off-by: NAndy Adamson <andros@netapp.com> Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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由 Christoph Hellwig 提交于
No need for generic cache with only one user. Keep a simple hash of deviceids in the filelayout driver. Signed-off-by: NChristoph Hellwig <hch@infradead.org> Acked-by: NAndy Adamson <andros@netapp.com> Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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由 Andy Adamson 提交于
Separate the rpc run portion of nfs_read_rpcsetup into a new function nfs_initiate_read that is called for normal NFS I/O. Add a pNFS read_pagelist function that is called instead of nfs_intitate_read for pNFS reads. Signed-off-by: NAndy Adamson <andros@citi.umich.edu> Signed-off-by: NBoaz Harrosh <bharrosh@panasas.com> Signed-off-by: NDean Hildebrand <dhildeb@us.ibm.com> Signed-off-by: NFred Isaman <iisaman@citi.umich.edu> Signed-off-by: NFred Isaman <iisaman@netapp.com> Signed-off-by: NMike Sager <sager@netapp.com> Signed-off-by: NMingyang Guo <guomingyang@nrchpc.ac.cn> Signed-off-by: NRicardo Labiaga <Ricardo.Labiaga@netapp.com> Signed-off-by: NTao Guo <guotao@nrchpc.ac.cn> Signed-off-by: NAndy Adamson <andros@netapp.com> Signed-off-by: NBenny Halevy <bhalevy@panasas.com> Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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由 Fred Isaman 提交于
Move the pnfs_update_layout call location to nfs_pageio_do_add_request(). Grab the lseg sent in the doio function to nfs_read_rpcsetup and attach it to each nfs_read_data so it can be sent to the layout driver. Signed-off-by: NAndy Adamson <andros@netapp.com> Signed-off-by: NAndy Adamson <andros@citi.umich.edu> Signed-off-by: NDean Hildebrand <dhildeb@us.ibm.com> Signed-off-by: NFred Isaman <iisaman@citi.umich.edu> Signed-off-by: NFred Isaman <iisaman@netapp.com> Signed-off-by: NBenny Halevy <bhalevy@panasas.com> Signed-off-by: NBoaz Harrosh <bharrosh@panasas.com> Signed-off-by: NOleg Drokin <green@linuxhacker.ru> Signed-off-by: NTao Guo <guotao@nrchpc.ac.cn> Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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由 Fred Isaman 提交于
Add a pg_test layout driver hook which is used to avoid coelescing I/O across layout stripes. Signed-off-by: NAndy Adamson <andros@netapp.com> Signed-off-by: NAndy Adamson <andros@citi.umich.edu> Signed-off-by: NDean Hildebrand <dhildeb@us.ibm.com> Signed-off-by: NFred Isaman <iisaman@citi.umich.edu> Signed-off-by: NFred Isaman <iisaman@netapp.com> Signed-off-by: NBenny Halevy <bhalevy@panasas.com> Signed-off-by: NBoaz Harrosh <bharrosh@panasas.com> Signed-off-by: NOleg Drokin <green@linuxhacker.ru> Signed-off-by: NTao Guo <guotao@nrchpc.ac.cn> Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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由 Fred Isaman 提交于
Prepare put_lseg and get_lseg to be called from the pNFS I/O code. Pull common code from pnfs_lseg_locked to call from pnfs_lseg. Inline pnfs_lseg_locked into it's only caller. Signed-off-by: NFred Isaman <iisaman@netapp.com> Signed-off-by: NBenny Halevy <bhalevy@panasas.com> Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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由 Andy Adamson 提交于
Prevents an Oops triggered by CB_LAYOUTRECALL and LAYOUTGET race on a pnfs_layout_hdr first pnfs_layout_segment. Signed-off-by: NAndy Adamson <andros@netapp.com> Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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由 Fred Isaman 提交于
The pnfs code was using throughout the lock order i_lock, cl_lock. This conflicts with the nfs delegation code. Rework the pnfs code to avoid taking both locks simultaneously. Currently the code takes the double lock to add/remove the layout to a nfs_client list, while atomically checking that the list of lsegs is empty. To avoid this, we rely on existing serializations. When a layout is initialized with lseg count equal zero, LAYOUTGET's openstateid serialization is in effect, making it safe to assume it stays zero unless we change it. And once a layout's lseg count drops to zero, it is set as DESTROYED and so will stay at zero. Signed-off-by: NFred Isaman <iisaman@netapp.com> Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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由 Fred Isaman 提交于
We do not need to clear the NFS_LAYOUT_BULK_RECALL, as setting it guarantees that NFS_LAYOUT_DESTROYED will be set once any outstanding io is finished. Signed-off-by: NFred Isaman <iisaman@netapp.com> Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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由 Fred Isaman 提交于
The code could violate the following from RFC5661, section 12.5.3: "Once a client has no more layouts on a file, the layout stateid is no longer valid and MUST NOT be used." This can occur when a layout already has a lseg, starts another non-everlapping LAYOUTGET, and a CB_LAYOUTRECALL for the existing lseg is processed before we hit pnfs_layout_process(). Solve by setting, each time the client has no more lsegs for a file, a flag which blocks further use of the layout and triggers its removal. This also fixes a second bug which occurs in the same instance as above. If we actually use pnfs_layout_process, we add the new lseg to the layout, but the layout has been removed from the nfs_client list by the intervening CB_LAYOUTRECALL and will not be added back. Thus the newly acquired lseg will not be properly returned in the event of a subsequent CB_LAYOUTRECALL. Signed-off-by: NFred Isaman <iisaman@netapp.com> Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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- 26 1月, 2011 1 次提交
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由 Andy Adamson 提交于
What we really want to know is the ref count. Signed-off-by: NAndy Adamson <andros@netapp.com> Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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- 07 1月, 2011 6 次提交
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由 Fred Isaman 提交于
A layout can request return-on-close. How this interacts with the forgetful model of never sending LAYOUTRETURNS is a bit ambiguous. We forget any layouts marked roc, and wait for them to be completely forgotten before continuing with the close. In addition, to compensate for races with any inflight LAYOUTGETs, and the fact that we do not get any layout stateid back from the server, we set the barrier to the worst case scenario of current_seqid + number of outstanding LAYOUTGETS. Signed-off-by: NFred Isaman <iisaman@netapp.com> Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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由 Fred Isaman 提交于
This is the heart of the wave 2 submission. Add the code to trigger drain and forget of any afected layouts. In addition, we set a "barrier", below which any LAYOUTGET reply is ignored. This is to compensate for the fact that we do not wait for outstanding LAYOUTGETs to complete as per section 12.5.5.2.1 of RFC 5661. Signed-off-by: NFred Isaman <iisaman@netapp.com> Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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由 Fred Isaman 提交于
This will be required to allow us to grab reference outside of i_lock. While we are at it, make put_layout_hdr take the same argument as all the related functions. Signed-off-by: NFred Isaman <iisaman@netapp.com> Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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由 Fred Isaman 提交于
Either a bad server reply, or our ignoring of multiple array segments in a reply, can cause a reply to not meet our requirements. Ensure that we ignore such replies. Signed-off-by: NFred Isaman <iisaman@netapp.com> Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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由 Fred Isaman 提交于
Since this list will be used to search for layouts to recall, this is necessary to avoid a race where the recall comes in, sees there is nothing in the client list, and prepares to return NOMATCHING, while the LAYOUTGET gets processed before the recall updates the stateid. Signed-off-by: NFred Isaman <iisaman@netapp.com> Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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由 Fred Isaman 提交于
We shouldn't send a LAYOUTGET(openstateid) unless all outstanding RPCs using the previous stateid are completed. This requires choosing the stateid to encode earlier, so we can abort if one is not available (we want to use the open stateid, but a LAYOUTGET is already out using it), and adding a count of the number of outstanding rpc calls using layout state (which for now consist solely of LAYOUTGETs). Signed-off-by: NFred Isaman <iisaman@netapp.com> Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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