Merge branch 'for-3.1' of git://linux-nfs.org/~bfields/linux
* 'for-3.1' of git://linux-nfs.org/~bfields/linux: nfsd: don't break lease on CLAIM_DELEGATE_CUR locks: rename lock-manager ops nfsd4: update nfsv4.1 implementation notes nfsd: turn on reply cache for NFSv4 nfsd4: call nfsd4_release_compoundargs from pc_release nfsd41: Deny new lock before RECLAIM_COMPLETE done fs: locks: remove init_once nfsd41: check the size of request nfsd41: error out when client sets maxreq_sz or maxresp_sz too small nfsd4: fix file leak on open_downgrade nfsd4: remember to put RW access on stateid destruction NFSD: Added TEST_STATEID operation NFSD: added FREE_STATEID operation svcrpc: fix list-corrupting race on nfsd shutdown rpc: allow autoloading of gss mechanisms svcauth_unix.c: quiet sparse noise svcsock.c: include sunrpc.h to quiet sparse noise nfsd: Remove deprecated nfsctl system call and related code. NFSD: allow OP_DESTROY_CLIENTID to be only op in COMPOUND Fix up trivial conflicts in Documentation/feature-removal-schedule.txt
This commit is contained in:
Linus Torvalds
@@ -338,21 +338,21 @@ fl_release_private: maybe no
|
||||
|
||||
----------------------- lock_manager_operations ---------------------------
|
||||
prototypes:
|
||||
int (*fl_compare_owner)(struct file_lock *, struct file_lock *);
|
||||
void (*fl_notify)(struct file_lock *); /* unblock callback */
|
||||
int (*fl_grant)(struct file_lock *, struct file_lock *, int);
|
||||
void (*fl_release_private)(struct file_lock *);
|
||||
void (*fl_break)(struct file_lock *); /* break_lease callback */
|
||||
int (*fl_change)(struct file_lock **, int);
|
||||
int (*lm_compare_owner)(struct file_lock *, struct file_lock *);
|
||||
void (*lm_notify)(struct file_lock *); /* unblock callback */
|
||||
int (*lm_grant)(struct file_lock *, struct file_lock *, int);
|
||||
void (*lm_release_private)(struct file_lock *);
|
||||
void (*lm_break)(struct file_lock *); /* break_lease callback */
|
||||
int (*lm_change)(struct file_lock **, int);
|
||||
|
||||
locking rules:
|
||||
file_lock_lock may block
|
||||
fl_compare_owner: yes no
|
||||
fl_notify: yes no
|
||||
fl_grant: no no
|
||||
fl_release_private: maybe no
|
||||
fl_break: yes no
|
||||
fl_change yes no
|
||||
lm_compare_owner: yes no
|
||||
lm_notify: yes no
|
||||
lm_grant: no no
|
||||
lm_release_private: maybe no
|
||||
lm_break: yes no
|
||||
lm_change yes no
|
||||
|
||||
--------------------------- buffer_head -----------------------------------
|
||||
prototypes:
|
||||
|
||||
@@ -39,27 +39,17 @@ interoperability problems with future clients. Known issues:
|
||||
from a linux client are possible, but we aren't really
|
||||
conformant with the spec (for example, we don't use kerberos
|
||||
on the backchannel correctly).
|
||||
- no trunking support: no clients currently take advantage of
|
||||
trunking, but this is a mandatory feature, and its use is
|
||||
recommended to clients in a number of places. (E.g. to ensure
|
||||
timely renewal in case an existing connection's retry timeouts
|
||||
have gotten too long; see section 8.3 of the RFC.)
|
||||
Therefore, lack of this feature may cause future clients to
|
||||
fail.
|
||||
- Incomplete backchannel support: incomplete backchannel gss
|
||||
support and no support for BACKCHANNEL_CTL mean that
|
||||
callbacks (hence delegations and layouts) may not be
|
||||
available and clients confused by the incomplete
|
||||
implementation may fail.
|
||||
- Server reboot recovery is unsupported; if the server reboots,
|
||||
clients may fail.
|
||||
- We do not support SSV, which provides security for shared
|
||||
client-server state (thus preventing unauthorized tampering
|
||||
with locks and opens, for example). It is mandatory for
|
||||
servers to support this, though no clients use it yet.
|
||||
- Mandatory operations which we do not support, such as
|
||||
DESTROY_CLIENTID, FREE_STATEID, SECINFO_NO_NAME, and
|
||||
TEST_STATEID, are not currently used by clients, but will be
|
||||
DESTROY_CLIENTID, are not currently used by clients, but will be
|
||||
(and the spec recommends their uses in common cases), and
|
||||
clients should not be expected to know how to recover from the
|
||||
case where they are not supported. This will eventually cause
|
||||
@@ -69,8 +59,9 @@ In addition, some limitations are inherited from the current NFSv4
|
||||
implementation:
|
||||
|
||||
- Incomplete delegation enforcement: if a file is renamed or
|
||||
unlinked, a client holding a delegation may continue to
|
||||
indefinitely allow opens of the file under the old name.
|
||||
unlinked by a local process, a client holding a delegation may
|
||||
continue to indefinitely allow opens of the file under the old
|
||||
name.
|
||||
|
||||
The table below, taken from the NFSv4.1 document, lists
|
||||
the operations that are mandatory to implement (REQ), optional
|
||||
@@ -99,7 +90,7 @@ Operations
|
||||
+----------------------+------------+--------------+----------------+
|
||||
| ACCESS | REQ | | Section 18.1 |
|
||||
NS | BACKCHANNEL_CTL | REQ | | Section 18.33 |
|
||||
NS | BIND_CONN_TO_SESSION | REQ | | Section 18.34 |
|
||||
I | BIND_CONN_TO_SESSION | REQ | | Section 18.34 |
|
||||
| CLOSE | REQ | | Section 18.2 |
|
||||
| COMMIT | REQ | | Section 18.3 |
|
||||
| CREATE | REQ | | Section 18.4 |
|
||||
@@ -111,7 +102,7 @@ NS*| DELEGPURGE | OPT | FDELG (REQ) | Section 18.5 |
|
||||
NS | DESTROY_CLIENTID | REQ | | Section 18.50 |
|
||||
I | DESTROY_SESSION | REQ | | Section 18.37 |
|
||||
I | EXCHANGE_ID | REQ | | Section 18.35 |
|
||||
NS | FREE_STATEID | REQ | | Section 18.38 |
|
||||
I | FREE_STATEID | REQ | | Section 18.38 |
|
||||
| GETATTR | REQ | | Section 18.7 |
|
||||
P | GETDEVICEINFO | OPT | pNFS (REQ) | Section 18.40 |
|
||||
P | GETDEVICELIST | OPT | pNFS (OPT) | Section 18.41 |
|
||||
@@ -145,14 +136,14 @@ NS*| OPENATTR | OPT | | Section 18.17 |
|
||||
| RESTOREFH | REQ | | Section 18.27 |
|
||||
| SAVEFH | REQ | | Section 18.28 |
|
||||
| SECINFO | REQ | | Section 18.29 |
|
||||
NS | SECINFO_NO_NAME | REC | pNFS files | Section 18.45, |
|
||||
I | SECINFO_NO_NAME | REC | pNFS files | Section 18.45, |
|
||||
| | | layout (REQ) | Section 13.12 |
|
||||
I | SEQUENCE | REQ | | Section 18.46 |
|
||||
| SETATTR | REQ | | Section 18.30 |
|
||||
| SETCLIENTID | MNI | | N/A |
|
||||
| SETCLIENTID_CONFIRM | MNI | | N/A |
|
||||
NS | SET_SSV | REQ | | Section 18.47 |
|
||||
NS | TEST_STATEID | REQ | | Section 18.48 |
|
||||
I | TEST_STATEID | REQ | | Section 18.48 |
|
||||
| VERIFY | REQ | | Section 18.31 |
|
||||
NS*| WANT_DELEGATION | OPT | FDELG (OPT) | Section 18.49 |
|
||||
| WRITE | REQ | | Section 18.32 |
|
||||
@@ -206,12 +197,6 @@ CREATE_SESSION:
|
||||
SEQUENCE:
|
||||
* no support for dynamic slot table renegotiation (optional)
|
||||
|
||||
nfsv4.1 COMPOUND rules:
|
||||
The following cases aren't supported yet:
|
||||
* Enforcing of NFS4ERR_NOT_ONLY_OP for: BIND_CONN_TO_SESSION, CREATE_SESSION,
|
||||
DESTROY_CLIENTID, DESTROY_SESSION, EXCHANGE_ID.
|
||||
* DESTROY_SESSION MUST be the final operation in the COMPOUND request.
|
||||
|
||||
Nonstandard compound limitations:
|
||||
* No support for a sessions fore channel RPC compound that requires both a
|
||||
ca_maxrequestsize request and a ca_maxresponsesize reply, so we may
|
||||
@@ -219,3 +204,5 @@ Nonstandard compound limitations:
|
||||
negotiation.
|
||||
* No more than one IO operation (read, write, readdir) allowed per
|
||||
compound.
|
||||
|
||||
See also http://wiki.linux-nfs.org/wiki/index.php/Server_4.0_and_4.1_issues.
|
||||
|
||||
Reference in New Issue
Block a user