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authorLinus Torvalds <torvalds@linux-foundation.org>2017-05-10 13:03:38 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2017-05-10 13:03:38 -0700
commit73ccb023a2f25b72c4b95499ca24760588014614 (patch)
treeb0fd9968af3e929ac496f159420a25dc3e1dcafb /Documentation/filesystems/nfs/pnfs.txt
parentf94c128eefcce2e3448d543f13cd7d7b8aa660a5 (diff)
parent76b2a303384e1d6299c3a0249f0f0ce2f8f96017 (diff)
Merge tag 'nfs-for-4.12-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs
Pull NFS client updates from Trond Myklebust: "Highlights include: Stable bugfixes: - Fix use after free in write error path - Use GFP_NOIO for two allocations in writeback - Fix a hang in OPEN related to server reboot - Check the result of nfs4_pnfs_ds_connect - Fix an rcu lock leak Features: - Removal of the unmaintained and unused OSD pNFS layout - Cleanup and removal of lots of unnecessary dprintk()s - Cleanup and removal of some memory failure paths now that GFP_NOFS is guaranteed to never fail. - Remove the v3-only data server limitation on pNFS/flexfiles Bugfixes: - RPC/RDMA connection handling bugfixes - Copy offload: fixes to ensure the copied data is COMMITed to disk. - Readdir: switch back to using the ->iterate VFS interface - File locking fixes from Ben Coddington - Various use-after-free and deadlock issues in pNFS - Write path bugfixes" * tag 'nfs-for-4.12-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: (89 commits) pNFS/flexfiles: Always attempt to call layoutstats when flexfiles is enabled NFSv4.1: Work around a Linux server bug... NFS append COMMIT after synchronous COPY NFSv4: Fix exclusive create attributes encoding NFSv4: Fix an rcu lock leak nfs: use kmap/kunmap directly NFS: always treat the invocation of nfs_getattr as cache hit when noac is on Fix nfs_client refcounting if kmalloc fails in nfs4_proc_exchange_id and nfs4_proc_async_renew NFSv4.1: RECLAIM_COMPLETE must handle NFS4ERR_CONN_NOT_BOUND_TO_SESSION pNFS: Fix NULL dereference in pnfs_generic_alloc_ds_commits pNFS: Fix a typo in pnfs_generic_alloc_ds_commits pNFS: Fix a deadlock when coalescing writes and returning the layout pNFS: Don't clear the layout return info if there are segments to return pNFS: Ensure we commit the layout if it has been invalidated pNFS: Don't send COMMITs to the DSes if the server invalidated our layout pNFS/flexfiles: Fix up the ff_layout_write_pagelist failure path pNFS: Ensure we check layout validity before marking it for return NFS4.1 handle interrupted slot reuse from ERR_DELAY NFSv4: check return value of xdr_inline_decode nfs/filelayout: fix NULL pointer dereference in fl_pnfs_update_layout() ...
Diffstat (limited to 'Documentation/filesystems/nfs/pnfs.txt')
-rw-r--r--Documentation/filesystems/nfs/pnfs.txt37
1 files changed, 0 insertions, 37 deletions
diff --git a/Documentation/filesystems/nfs/pnfs.txt b/Documentation/filesystems/nfs/pnfs.txt
index 8de578a98222..80dc0bdc302a 100644
--- a/Documentation/filesystems/nfs/pnfs.txt
+++ b/Documentation/filesystems/nfs/pnfs.txt
@@ -64,46 +64,9 @@ table which are called by the nfs-client pnfs-core to implement the
different layout types.
Files-layout-driver code is in: fs/nfs/filelayout/.. directory
-Objects-layout-driver code is in: fs/nfs/objlayout/.. directory
Blocks-layout-driver code is in: fs/nfs/blocklayout/.. directory
Flexfiles-layout-driver code is in: fs/nfs/flexfilelayout/.. directory
-objects-layout setup
---------------------
-
-As part of the full STD implementation the objlayoutdriver.ko needs, at times,
-to automatically login to yet undiscovered iscsi/osd devices. For this the
-driver makes up-calles to a user-mode script called *osd_login*
-
-The path_name of the script to use is by default:
- /sbin/osd_login.
-This name can be overridden by the Kernel module parameter:
- objlayoutdriver.osd_login_prog
-
-If Kernel does not find the osd_login_prog path it will zero it out
-and will not attempt farther logins. An admin can then write new value
-to the objlayoutdriver.osd_login_prog Kernel parameter to re-enable it.
-
-The /sbin/osd_login is part of the nfs-utils package, and should usually
-be installed on distributions that support this Kernel version.
-
-The API to the login script is as follows:
- Usage: $0 -u <URI> -o <OSDNAME> -s <SYSTEMID>
- Options:
- -u target uri e.g. iscsi://<ip>:<port>
- (always exists)
- (More protocols can be defined in the future.
- The client does not interpret this string it is
- passed unchanged as received from the Server)
- -o osdname of the requested target OSD
- (Might be empty)
- (A string which denotes the OSD name, there is a
- limit of 64 chars on this string)
- -s systemid of the requested target OSD
- (Might be empty)
- (This string, if not empty is always an hex
- representation of the 20 bytes osd_system_id)
-
blocks-layout setup
-------------------