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* protocol/client,server: fcntl lock self healing.Mohammed Junaid2012-02-201-4/+74
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently(with out this patch), on a disconnect the server cleans up the transport which inturn closes the fd's and releases the locks acquired on those fd's by that client. On a reconnect, client just reopens the fd's but doesn't reacquire the locks. The application that had previously acquired the locks still is under the assumption that it is the owner of those locks which might have been granted to other clients(if they request) by the server leading to data corruption. This patch allows the client to reacquire the fcntl locks (held on the fd's) during client-server handshake. * The server identifies the client via process-uuid-xl (which is a combination of uuid and client-protocol name, it is assumed to be unique) and lk-version number. * The client maintains a list of process-uuid-xl, lk-version pair for each accepted connection. On a connect, the server traverses the list for a matching pair, if a matching pair is not found the the server returns lk-version with value 0, else it returns the lk-version it has in store. * On a disconnect, the server and client enter grace period, and on the completion of the grace period, the client bumps up its lk-version number (which means, it will reacquire the locks the next time) and the server will distroy the connection. If reconnection happens within the grace period, the server will find the matching (process-uuid-xl, lk-version) pair in its list which guarantees that the fd's and there corresponding locks are still valid for this client. Configurable options: To set grace-timeout, the following options are option server.grace-timeout value option client.grace-timeout value To enable or disable the lk-heal, option lk-heal [on|off] gluster volume set command can be used to configurable options Change-Id: Id677ef1087b300d649f278b8b2aa0d94eae85ed2 BUG: 795386 Signed-off-by: Mohammed Junaid <junaid@redhat.com> Reviewed-on: http://review.gluster.com/2766 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vijay@gluster.com>
* rpc: extend actors with flag signing if privilege is requiredCsaba Henk2012-01-211-4/+4
| | | | | | | | | | | | Currently we allow the following RPC messages for unprivileged users: GLUSTER_CLI_GETWD, GLUSTER_CLI_MOUNT, GLUSTER_CLI_UMOUNT Change-Id: I05414f3ca7cbe47de45c5e5cfba1537efc774e6c BUG: 781256 Signed-off-by: Csaba Henk <csaba@gluster.com> Reviewed-on: http://review.gluster.com/2641 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Anand Avati <avati@gluster.com>
* glusterfs protocol: handshake to log the version of the peerAmar Tumballi2011-09-211-4/+14
| | | | | | | | | | | | | | | | | * As RPC program's name is just used for logging, we now have 'PACKAGE_VERSION' part of the string, which gets logged in client side. * From client, we send the PACKAGE_VERSION in handshake dictionary, which gets logged on serverside handshake. The change doesn't break any compatibility between client or server as it would only enhance the logging part of handshake. Change-Id: Ie7f498af2f5d3f97be37c8d982061cb6021883ce BUG: 3589 Reviewed-on: http://review.gluster.com/467 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vijay@gluster.com>
* Eliminate many "var set but not used" warnings with newer gcc.Jeff Darcy2011-09-071-2/+0
| | | | | | | | | | | | | | | | This fixes ~200 such warnings, but leaves three categories untouched. (1) Rpcgen code. (2) Macros which set variables in the outer (calling function) scope. (3) Variables which are set via function calls which may have side effects. Change-Id: I6554555f78ed26134251504b038da7e94adacbcd BUG: 2550 Reviewed-on: http://review.gluster.com/371 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Anand Avati <avati@gluster.com>
* modify to the way we used XDR definitions files (.x files)Amar Tumballi2011-09-071-5/+2
| | | | | | | | | | | | | | | | | | | | | | | | Earlier: step 1: copy the existing <xdr>.x files to /tmp step 2: generate '.[ch]' files using 'rpcgen <xdr>.x' step 3: check diff with the to the existing files, add only your part of changes back to the original file. (ignore other changes). step 4: there is another file to write wrapper functions to convert structures to/from XDR buffers, update it with your new structure. step 5: use these wrapper functions in the newly written procedures. step 6: commit :-| Now: step 1: update (mostly adding only) the <xdr>.x file step 2: run '<path-to-src>/extras/generate-xdr-files.sh <xdr>.x' command step 3: implement rpc procedure to handle the request/response. step 4: commit :-) Change-Id: I219f9159fc980438c86e847c6b030be96e595ea2 BUG: 3488 Reviewed-on: http://review.gluster.com/341 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Anand Avati <avati@gluster.com>
* glusterfs protocol: bring in variable sized iobuf supportAmar Tumballi2011-09-071-3/+6
| | | | | | | | | | | is a step towards reducing glusterfs memory footprint. should also help a bit in overall performance. Change-Id: I074d5813602b2c960d59562e792b3dc6e43d2f42 BUG: 3475 Reviewed-on: http://review.gluster.com/322 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Anand Avati <avati@gluster.com>
* Change Copyright current yearPranith Kumar K2011-08-101-1/+1
| | | | | | | | Change-Id: I2d10f2be44f518f496427f257988f1858e888084 BUG: 3348 Reviewed-on: http://review.gluster.com/200 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Anand Avati <avati@gluster.com>
* LICENSE: s/GNU Affero General Public/GNU General Public/Pranith Kumar K2011-08-061-3/+3
| | | | | | | | Change-Id: I3914467611e573cccee0d22df93920cf1b2eb79f BUG: 3348 Reviewed-on: http://review.gluster.com/182 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Anand Avati <avati@gluster.com>
* protocol/server: log enhancementsAmar Tumballi2011-03-171-3/+2
| | | | | | | | Signed-off-by: Amar Tumballi <amar@gluster.com> Signed-off-by: Vijay Bellur <vijay@dev.gluster.com> BUG: 2346 (Log message enhancements in GlusterFS - phase 1) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=2346
* protocol/server: White space cleanup and NULL check validations.Mohammed Junaid Ahmed2011-03-171-6/+6
| | | | | | | | | Signed-off-by: Junaid <junaid@gluster.com> Signed-off-by: Amar Tumballi <amar@gluster.com> Signed-off-by: Vijay Bellur <vijay@dev.gluster.com> BUG: 2346 (Log message enhancements in GlusterFS - phase 1) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=2346
* Change GNU GPL to GNU AGPLPranith K2010-10-041-3/+3
| | | | | | | | Signed-off-by: Pranith Kumar K <pranithk@gluster.com> Signed-off-by: Vijay Bellur <vijay@dev.gluster.com> BUG: 1388 () URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=1388
* remove 'gfs_id' field from all protocol xdr structuresAmar Tumballi2010-10-011-2/+1
| | | | | | | | | | | | | It was kept as a debugging requirement/placeholder. Because RPC is mostly bug free with regard to basic xdr structures, it doesn't make sense to carry this forward in release. Saves 8bytes in each request. Signed-off-by: Amar Tumballi <amar@gluster.com> Signed-off-by: Vijay Bellur <vijay@dev.gluster.com> BUG: 875 (Implement a new protocol to provide proper backward/forward compatibility) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=875
* memory leak fixes.Raghavendra G2010-09-151-1/+17
| | | | | | | | | | | | | - free memory allocated by libc when decoding request arguments in server and reply in client. - free memory allocated to saved_frames during connection cleanup. - free memory allocated for transport name while creating listeners. Signed-off-by: Raghavendra G <raghavendra@gluster.com> Signed-off-by: Vijay Bellur <vijay@dev.gluster.com> BUG: 1438 (memory leaks) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=1438
* fix glusterfsd to glusterfs getspecAmar Tumballi2010-08-261-31/+36
| | | | | | | | Signed-off-by: Amar Tumballi <amar@gluster.com> Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 1445 (getspec doesn't work from glusterfsd) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=1445
* rpc - cleanup and changes related to rdmaRaghavendra G2010-08-181-6/+6
| | | | | | | | | | | | - remove rpc_conn_state structure. - add a member to point struct rpc_req in rpc_transport_req structure. This is needed for rdma to store rdma specific per request data. Signed-off-by: Raghavendra G <raghavendra@gluster.com> Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 875 (Implement a new protocol to provide proper backward/forward compatibility) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=875
* fix all clang errors in xlator/protocolAmar Tumballi2010-07-281-3/+14
| | | | | | | | Signed-off-by: Amar Tumballi <amar@gluster.com> Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 1092 () URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=1092
* some check added to the variables after GF_CALLOCAmar Tumballi2010-07-281-1/+2
| | | | | | | | | | | handles some NULL dereference problems (reported by clang when ran with code where '#define GF_CALLOC NULL'). Signed-off-by: Amar Tumballi <amar@gluster.com> Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 966 (NULL check for avoiding NULL dereferencing of pointers..) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=966
* protocol/lib: rename files to standardized names and placesAnand Avati2010-07-141-2/+2
| | | | | | | | | | | | - move xlators/protocol/lib/* to rpc/xdr/ - rename CLI and glusterd XDR filenames - remove xlators/protocol/lib (libgfproto1.so) Signed-off-by: Anand V. Avati <avati@blackhole.gluster.com> Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 875 (Implement a new protocol to provide proper backward/forward compatibility) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=875
* make DUMP as another programAmar Tumballi2010-07-081-53/+4
| | | | | | | | | | | * on server side, make it a rpc program. * on client its another program at protocol Signed-off-by: Amar Tumballi <amar@gluster.com> Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 875 (Implement a new protocol to provide proper backward/forward compatibility) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=875
* NULL dereference fixes in code base after running with 'clang'Amar Tumballi2010-07-021-2/+2
| | | | | | | | | | | | * 212 logical (NULL deref/divide by zero) errors reduced to 28 (27 of them in contrib/ and lex part of codebase, 1 is invalid) * 11 API errors reduced to 0 Signed-off-by: Amar Tumballi <amar@gluster.com> Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 966 (NULL check for avoiding NULL dereferencing of pointers..) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=966
* added proper mem-types to GF_CALLOC in protocolAmar Tumballi2010-06-251-8/+10
| | | | | | | | Signed-off-by: Amar Tumballi <amar@gluster.com> Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 875 (Implement a new protocol to provide proper backward/forward compatibility) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=875
* rpc protocolAmar Tumballi2010-06-211-0/+689
Signed-off-by: Amar Tumballi <amar@gluster.com> Signed-off-by: Raghavendra G <raghavendra@gluster.com> Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 875 (Implement a new protocol to provide proper backward/forward compatibility) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=875
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