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04f8345038
kernel-ark/fs/nfs
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Boaz Harrosh 04f8345038 pnfs-obj: osd raid engine read/write implementation 
With the use of the in-kernel osd library. Implement read/write
of data from/to osd-objects according to information specified
in the objects-layout.

Support for stripping over mirrors with a received stripe_unit.
There are however a few constrains which are not supported:
 1. Stripe Unit must be a multiple of PAGE_SIZE
 2. stripe length (stripe_unit * number_of_stripes) can not be
    bigger then 32bit.

Also support raid-groups and partial-layout. Partial-layout is
when not all the groups are received on the line, addressing
only a partial range of the file.

TODO:
  Only raid0! raid 4/5/6 support will come at later stage

A none supported layout will send IO through the MDS

[Important fallout from the last rebase]
Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
[gfp_flags]
Signed-off-by: Benny Halevy <bhalevy@panasas.com>
2011-05-29 20:54:15 +03:00
..
objlayout pnfs-obj: osd raid engine read/write implementation 2011-05-29 20:54:15 +03:00
cache_lib.c
cache_lib.h
callback_proc.c pnfs: Use byte-range for cb_layoutrecall 2011-05-29 20:52:34 +03:00
callback_xdr.c pnfs: CB_NOTIFY_DEVICEID 2011-05-29 20:52:31 +03:00
callback.c NFS do not find client in NFSv4 pg_authenticate 2011-01-25 15:26:51 -05:00
callback.h pnfs: CB_NOTIFY_DEVICEID 2011-05-29 20:52:31 +03:00
client.c NFSv4.1: purge deviceid cache on nfs_free_client 2011-05-29 20:50:42 +03:00
delegation.c NFS: Fix an NFS client lockdep issue 2011-01-28 13:37:09 -05:00
delegation.h NFS: Move cl_delegations to the nfs_server struct 2011-01-06 14:57:46 -05:00
dir.c SUNRPC: introduce xdr_init_decode_pages 2011-05-29 20:52:32 +03:00
direct.c NFS: account direct-io into task io accounting 2011-03-11 15:39:27 -05:00
dns_resolve.c
dns_resolve.h
file.c Fix common misspellings 2011-03-31 11:26:23 -03:00
fscache-index.c
fscache.c
fscache.h
getroot.c Merge branch 'nfs-for-2.6.39' into nfs-for-next 2011-03-24 17:03:14 -04:00
idmap.c NFSv4: Send unmapped uid/gids to the server when using auth_sys 2011-03-11 15:39:27 -05:00
inode.c Merge branch 'nfs-for-2.6.39' into nfs-for-next 2011-03-24 17:03:14 -04:00
internal.h pnfs: support for non-rpc layout drivers 2011-05-29 20:53:51 +03:00
iostat.h
Kconfig pnfs-obj: objlayoutdriver module skeleton 2011-05-29 20:52:35 +03:00
Makefile pnfs-obj: objlayoutdriver module skeleton 2011-05-29 20:52:35 +03:00
mount_clnt.c NFS: Remove redundant unlikely() 2010-12-21 11:51:23 -05:00
namespace.c NFS: Remove unused argument from nfs_find_best_sec() 2011-04-12 19:34:23 -04:00
nfs2xdr.c Merge branch 'bugfixes' into nfs-for-2.6.38 2011-01-10 14:48:02 -05:00
nfs3acl.c NFS: Prevent memory allocation failure in nfsacl_encode() 2011-01-25 15:24:47 -05:00
nfs3proc.c NFS: lookup supports alternate client 2011-03-24 13:52:41 -04:00
nfs3xdr.c NFS: Fix "kernel BUG at fs/nfs/nfs3xdr.c:1338!" 2011-01-25 15:24:47 -05:00
nfs4_fs.h NFSv4.1: Don't loop forever in nfs4_proc_create_session 2011-04-24 14:28:18 -04:00
nfs4filelayout.c SUNRPC: introduce xdr_init_decode_pages 2011-05-29 20:52:32 +03:00
nfs4filelayout.h NFSv4.1: purge deviceid cache on nfs_free_client 2011-05-29 20:50:42 +03:00
nfs4filelayoutdev.c SUNRPC: introduce xdr_init_decode_pages 2011-05-29 20:52:32 +03:00
nfs4namespace.c nfs: nfs_do_{ref,sub}mount() superblock argument is redundant 2011-03-16 16:48:06 -04:00
nfs4proc.c pnfs: support for non-rpc layout drivers 2011-05-29 20:53:51 +03:00
nfs4renewd.c NFSv4.1: new flag for state renewal check 2011-03-11 15:38:41 -05:00
nfs4state.c NFSv4: Ensure that clientid and session establishment can time out 2011-04-24 14:29:33 -04:00
nfs4xdr.c NFS: Return meaningful status from decode_secinfo() 2011-04-27 16:17:29 -04:00
nfsroot.c NFS: NFSROOT should default to "proto=udp" 2011-03-11 15:38:07 -05:00
pagelist.c NFS: Fix a hang in the writeback path 2011-03-27 17:48:07 +02:00
pnfs_dev.c NFSv4.1: use layout driver in global device cache 2011-05-29 20:52:31 +03:00
pnfs.c pnfs: support for non-rpc layout drivers 2011-05-29 20:53:51 +03:00
pnfs.h pnfs: support for non-rpc layout drivers 2011-05-29 20:53:51 +03:00
proc.c NFS: lookup supports alternate client 2011-03-24 13:52:41 -04:00
read.c pnfs: Use byte-range for layoutget 2011-05-29 20:52:32 +03:00
super.c pnfs: client stats 2011-05-29 20:52:34 +03:00
symlink.c
sysctl.c NFS: new idmapper 2010-10-07 18:48:49 -04:00
unlink.c nfs: store devname at disconnected NFS roots 2011-03-16 16:44:24 -04:00
write.c pnfs: Use byte-range for layoutget 2011-05-29 20:52:32 +03:00