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2011-07-31pnfsblock: write_pagelist handle zero invalid extentsPeng Tao1-42/+233
For invalid extents, find other pages in the same fsblock and write them out. [pnfsblock: write_begin] 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> 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>
2011-07-31pnfsblock: note written INVAL areas for layoutcommitFred Isaman3-0/+129
Signed-off-by: Peng Tao <peng_tao@emc.com> 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> Signed-off-by: Jim Rees <rees@umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2011-07-31pnfsblock: bl_write_pagelistFred Isaman1-3/+126
Note: When upper layer's read/write request cannot be fulfilled, the block layout driver shouldn't silently mark the page as error. It should do what can be done and leave the rest to the upper layer. To do so, we should set rdata/wdata->res.count properly. When upper layer re-send the read/write request to finish the rest part of the request, pgbase is the position where we should start at. [pnfsblock: bl_write_pagelist support functions] [pnfsblock: bl_write_pagelist adjust for missing PG_USE_PNFS] Signed-off-by: Fred Isaman <iisaman@citi.umich.edu> [pnfsblock: handle errors when read or write pagelist.] Signed-off-by: Zhang Jingwang <yyalone@gmail.com> [pnfs-block: use new write_pagelist api] Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Benny Halevy <bhalevy@tonian.com> Signed-off-by: Jim Rees <rees@umich.edu> [SQUASHME: pnfsblock: mds_offset is set in the generic layer] Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: Benny Halevy <bhalevy@tonian.com> [pnfsblock: mark IO error with NFS_LAYOUT_{RW|RO}_FAILED] Signed-off-by: Peng Tao <peng_tao@emc.com> [pnfsblock: SQUASHME: adjust to API change] Signed-off-by: Fred Isaman <iisaman@citi.umich.edu> [pnfsblock: fixup blksize alignment in bl_setup_layoutcommit] Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Benny Halevy <bhalevy@tonian.com> [pnfsblock: bl_write_pagelist adjust for missing PG_USE_PNFS] Signed-off-by: Fred Isaman <iisaman@citi.umich.edu> [pnfsblock: handle errors when read or write pagelist.] Signed-off-by: Zhang Jingwang <yyalone@gmail.com> [pnfs-block: use new write_pagelist api] 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>
2011-07-31pnfsblock: bl_read_pagelistFred Isaman1-0/+265
Note: When upper layer's read/write request cannot be fulfilled, the block layout driver shouldn't silently mark the page as error. It should do what can be done and leave the rest to the upper layer. To do so, we should set rdata/wdata->res.count properly. When upper layer re-send the read/write request to finish the rest part of the request, pgbase is the position where we should start at. [pnfsblock: mark IO error with NFS_LAYOUT_{RW|RO}_FAILED] Signed-off-by: Peng Tao <peng_tao@emc.com> [pnfsblock: read path error handling] Signed-off-by: Fred Isaman <iisaman@citi.umich.edu> [pnfsblock: handle errors when read or write pagelist.] Signed-off-by: Zhang Jingwang <yyalone@gmail.com> [pnfs-block: use new read_pagelist api] 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>
2011-07-31pnfsblock: cleanup_layoutcommitFred Isaman3-0/+217
In blocklayout driver. There are two things happening while layoutcommit/cleanup. 1. the modified extents are encoded. 2. On cleanup the extents are put back on the layout rw extents list, for reads. In the new system where actual xdr encoding is done in encode_layoutcommit() directly into xdr buffer, these are the new commit stages: 1. On setup_layoutcommit, the range is adjusted as before and a structure is allocated for communication with bl_encode_layoutcommit && bl_cleanup_layoutcommit (Generic layer provides a void-star to hang it on) 2. bl_encode_layoutcommit is called to do the actual encoding directly into xdr. The commit-extent-list is not freed and is stored on above structure. FIXME: The code is not yet converted to the new XDR cleanup 3. On cleanup the commit-extent-list is put back by a call to set_to_rw() as before, but with no need for XDR decoding of the list as before. And the commit-extent-list is freed. Finally allocated structure is freed. [rm inode and pnfs_layout_hdr args from cleanup_layoutcommit()] Signed-off-by: Jim Rees <rees@umich.edu> [pnfsblock: introduce bl_committing list] Signed-off-by: Peng Tao <peng_tao@emc.com> [pnfsblock: SQUASHME: adjust to API change] Signed-off-by: Fred Isaman <iisaman@citi.umich.edu> [blocklayout: encode_layoutcommit implementation] Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> [pnfsblock: fix bug setting up layoutcommit.] Signed-off-by: Tao Guo <guotao@nrchpc.ac.cn> [pnfsblock: cleanup_layoutcommit wants a status parameter] Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> 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>
2011-07-31pnfsblock: encode_layoutcommitFred Isaman3-44/+146
In blocklayout driver. There are two things happening while layoutcommit/cleanup. 1. the modified extents are encoded. 2. On cleanup the extents are put back on the layout rw extents list, for reads. In the new system where actual xdr encoding is done in encode_layoutcommit() directly into xdr buffer, these are the new commit stages: 1. On setup_layoutcommit, the range is adjusted as before and a structure is allocated for communication with bl_encode_layoutcommit && bl_cleanup_layoutcommit (Generic layer provides a void-star to hang it on) 2. bl_encode_layoutcommit is called to do the actual encoding directly into xdr. The commit-extent-list is not freed and is stored on above structure. FIXME: The code is not yet converted to the new XDR cleanup 3. On cleanup the commit-extent-list is put back by a call to set_to_rw() as before, but with no need for XDR decoding of the list as before. And the commit-extent-list is freed. Finally allocated structure is freed. [rm inode and pnfs_layout_hdr args from cleanup_layoutcommit()] [pnfsblock: get rid of deprecated xdr macros] Signed-off-by: Jim Rees <rees@umich.edu> Signed-off-by: Peng Tao <peng_tao@emc.com> Signed-off-by: Fred Isaman <iisaman@citi.umich.edu> [blocklayout: encode_layoutcommit implementation] Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> [pnfsblock: fix bug setting up layoutcommit.] Signed-off-by: Tao Guo <guotao@nrchpc.ac.cn> [pnfsblock: prevent commit list corruption] [pnfsblock: fix layoutcommit with an empty opaque] 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> Signed-off-by: Jim Rees <rees@umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2011-07-31pnfsblock: merge rw extentsFred Isaman1-0/+47
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> Signed-off-by: Jim Rees <rees@umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2011-07-31pnfsblock: add extent manipulation functionsFred Isaman3-3/+287
Adds working implementations of various support functions to handle INVAL extents, needed by writes, such as bl_mark_sectors_init and bl_is_sector_init. [pnfsblock: fix 64-bit compiler warnings for extent manipulation] 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> [Implement release_inval_marks] Signed-off-by: Zhang Jingwang <zhangjingwang@nrchpc.ac.cn> Signed-off-by: Jim Rees <rees@umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2011-07-31pnfsblock: bl_find_get_extentFred Isaman2-0/+50
Implement bl_find_get_extent(), one of the core extent manipulation routines. [pnfsblock: Lookup list entry of layouts and tags in reverse order] Signed-off-by: Zhang Jingwang <zhangjingwang@nrchpc.ac.cn> Signed-off-by: Fred Isaman <iisaman@citi.umich.edu> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Jim Rees <rees@umich.edu> pnfsblock: fix print format warnings for sector_t and size_t gcc spews warnings about these on x86_64, e.g.: fs/nfs/blocklayout/blocklayout.c:74: warning: format ‘%Lu’ expects type ‘long long unsigned int’, but argument 2 has type ‘sector_t’ fs/nfs/blocklayout/blocklayout.c:388: warning: format ‘%d’ expects type ‘int’, but argument 5 has type ‘size_t’ 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>
2011-07-31pnfsblock: xdr decode pnfs_block_layout4Fred Isaman1-2/+206
XDR decodes the block layout payload sent in LAYOUTGET result, storing the result in an extent list. [pnfsblock: get rid of deprecated xdr macros] Signed-off-by: Jim Rees <rees@umich.edu> Signed-off-by: Fred Isaman <iisaman@citi.umich.edu> [pnfsblock: fix bug getting pnfs_layout_type in translate_devid().] Signed-off-by: Tao Guo <guotao@nrchpc.ac.cn> 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>
2011-07-31pnfsblock: call and parse getdevicelistFred Isaman3-7/+157
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>
2011-07-31pnfsblock: merge extentsFred Isaman2-0/+119
Replace a stub, so that extents underlying the layouts are properly added, merged, or ignored as necessary. Signed-off-by: Fred Isaman <iisaman@citi.umich.edu> [pnfsblock: delete the new node before put it] Signed-off-by: Mingyang Guo <guomingyang@nrchpc.ac.cn> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Peng Tao <peng_tao@emc.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>
2011-07-31pnfsblock: lseg alloc and freeFred Isaman3-6/+39
Signed-off-by: Fred Isaman <iisaman@citi.umich.edu> [pnfsblock: fix bug getting pnfs_layout_type in translate_devid().] Signed-off-by: Tao Guo <guotao@nrchpc.ac.cn> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Zhang Jingwang <Jingwang.Zhang@emc.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>
2011-07-31pnfsblock: remove device operationsJim Rees3-1/+115
Signed-off-by: Jim Rees <rees@umich.edu> 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> [upcall bugfixes] Signed-off-by: Peng Tao <peng_tao@emc.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2011-07-31pnfsblock: add device operationsJim Rees4-1/+274
Signed-off-by: Jim Rees <rees@umich.edu> 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> [upcall bugfixes] Signed-off-by: Peng Tao <peng_tao@emc.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2011-07-31pnfsblock: basic extent codeFred Isaman4-5/+107
Adds structures and basic create/delete code for extents. Signed-off-by: Fred Isaman <iisaman@citi.umich.edu> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Zhang Jingwang <Jingwang.Zhang@emc.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>
2011-07-31pnfsblock: use pageio_ops apiBenny Halevy1-0/+14
[pnfsblock: use pnfs_generic_pg_init_read/write] Signed-off-by: Peng Tao <peng_tao@emc.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Jim Rees <rees@umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2011-07-31pnfsblock: add blocklayout Kconfig option, Makefile, and stubsFred Isaman3-0/+270
Define a configuration variable to enable/disable compilation of the block driver code. Add the minimal structure for a pnfs block layout driver, and empty list-heads that will hold the extent data [pnfsblock: make NFS_V4_1 select PNFS_BLOCK] Signed-off-by: Peng Tao <peng_tao@emc.com> Signed-off-by: Fred Isaman <iisaman@citi.umich.edu> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [pnfs-block: fix CONFIG_PNFS_BLOCK dependencies] Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Benny Halevy <bhalevy@tonian.com> [pnfsblock: SQUASHME: adjust to API change] Signed-off-by: Fred Isaman <iisaman@citi.umich.edu> [pnfs: move pnfs_layout_type inline in nfs_inode] Signed-off-by: Benny Halevy <bhalevy@panasas.com> [blocklayout: encode_layoutcommit implementation] Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Benny Halevy <bhalevy@tonian.com> [pnfsblock: layout alloc and free] Signed-off-by: Fred Isaman <iisaman@citi.umich.edu> [pnfs: move pnfs_layout_type inline in nfs_inode] Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Benny Halevy <bhalevy@tonian.com> [pnfsblock: define module alias] Signed-off-by: Peng Tao <peng_tao@emc.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>
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