summaryrefslogtreecommitdiffstats
path: root/rpc/rpc-lib/src/rpc-clnt.c
Commit message (Collapse)AuthorAgeFilesLines
* multiple files: calloc -> mallocYaniv Kaul2018-09-041-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | xlators/cluster/stripe/src/stripe-helpers.c: Move to GF_MALLOC() instead of GF_CALLOC() when possible xlators/cluster/dht/src/tier.c: Move to GF_MALLOC() instead of GF_CALLOC() when possible xlators/cluster/dht/src/dht-layout.c: Move to GF_MALLOC() instead of GF_CALLOC() when possible xlators/cluster/dht/src/dht-helper.c: Move to GF_MALLOC() instead of GF_CALLOC() when possible xlators/cluster/dht/src/dht-common.c: Move to GF_MALLOC() instead of GF_CALLOC() when possible xlators/cluster/afr/src/afr.c: Move to GF_MALLOC() instead of GF_CALLOC() when possible xlators/cluster/afr/src/afr-inode-read.c: Move to GF_MALLOC() instead of GF_CALLOC() when possible tests/bugs/replicate/bug-1250170-fsync.c: Move to GF_MALLOC() instead of GF_CALLOC() when possible tests/basic/gfapi/gfapi-async-calls-test.c: Move to GF_MALLOC() instead of GF_CALLOC() when possible tests/basic/ec/ec-fast-fgetxattr.c: Move to GF_MALLOC() instead of GF_CALLOC() when possible rpc/xdr/src/glusterfs3.h: Move to GF_MALLOC() instead of GF_CALLOC() when possible rpc/rpc-transport/socket/src/socket.c: Move to GF_MALLOC() instead of GF_CALLOC() when possible rpc/rpc-lib/src/rpc-clnt.c: Move to GF_MALLOC() instead of GF_CALLOC() when possible extras/geo-rep/gsync-sync-gfid.c: Move to GF_MALLOC() instead of GF_CALLOC() when possible cli/src/cli-xml-output.c: Move to GF_MALLOC() instead of GF_CALLOC() when possible cli/src/cli-rpc-ops.c: Move to GF_MALLOC() instead of GF_CALLOC() when possible cli/src/cli-cmd-volume.c: Move to GF_MALLOC() instead of GF_CALLOC() when possible cli/src/cli-cmd-system.c: Move to GF_MALLOC() instead of GF_CALLOC() when possible cli/src/cli-cmd-snapshot.c: Move to GF_MALLOC() instead of GF_CALLOC() when possible cli/src/cli-cmd-peer.c: Move to GF_MALLOC() instead of GF_CALLOC() when possible cli/src/cli-cmd-global.c: Move to GF_MALLOC() instead of GF_CALLOC() when possible It doesn't make sense to calloc (allocate and clear) memory when the code right away fills that memory with data. It may be optimized by the compiler, or have a microscopic performance improvement. In some cases, also changed allocation size to be sizeof some struct or type instead of a pointer - easier to read. In some cases, removed redundant strlen() calls by saving the result into a variable. 1. Only done for the straightforward cases. There's room for improvement. 2. Please review carefully, especially for string allocation, with the terminating NULL string. Only compile-tested! updates: bz#1193929 Original-Author: Yaniv Kaul <ykaul@redhat.com> Signed-off-by: Yaniv Kaul <ykaul@redhat.com> Signed-off-by: Amar Tumballi <amarts@redhat.com> Change-Id: I16274dca4078a1d06ae09a0daf027d734b631ac2
* Various files: strncpy()->sprintf(), reduce strlen()'sYaniv Kaul2018-08-311-4/+6
| | | | | | | | | | | | | | | | | | | | strncpy may not be very efficient for short strings copied into a large buffer: If the length of src is less than n, strncpy() writes additional null bytes to dest to ensure that a total of n bytes are written. Instead, use snprintf(). Check for truncated output where applicable. Also: - save the result of strlen() and re-use it when possible. - move from strlen to SLEN (sizeof() ) for const strings. Compile-tested only! Change-Id: I54e80d4f4a80e98d3775e376efe05c51af0b29eb updates: bz#1193929 Signed-off-by: Yaniv Kaul <ykaul@redhat.com>
* rpc: log fuse unique ID along with gluster XIDMilind Changire2018-08-301-8/+12
| | | | | | | | | | for better traceability between fuse requests and gluster requests a mapping needs to be established in the logs between the two IDs BUG: 1623408 Change-Id: I0ef82fe69c1ad7d0ce9e3ac4f35cd82aa6e9bca9 fixes: bz#1623408 Signed-off-by: Milind Changire <mchangir@redhat.com>
* rpc: rpc_clnt_connection_cleanup is crashed due to double freeMohit Agrawal2018-07-251-3/+17
| | | | | | | | | | | | | Problem: gfapi client is getting crashed in rpc_clnt_connection_cleanup at the time of destroying saved_frames Solution: gfapi client is getting crashed because saved_frame ptr is already freed in rpc_clnt_destroy.To avoid the same update code in rpc_clnt_destroy Change-Id: Id8cce102b49f26cfd86ef88257032ed98f43192b fixes: bz#1607783 Signed-off-by: Mohit Agrawal <moagrawal@redhat.com>
* rpc/clnt: Don't let consumers manage "connected" stateRaghavendra G2018-06-041-46/+14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The state management of "connected" in rpc is ad-hoc as far as the responsibility goes. Note that there is nothing wrong with functionality itself. rpc layer manages this state in disconnect codepath and has exposed an api to manage this one from consumers. Note that rpc layer never sets "connected" to true by itself, which forces the consumers to use this api to get a working rpc connection. The situation is best captured from a comment in code from Jeff Darcy in glusterfsd/src/gf-attach.c: -/* - * In a sane world, the generic RPC layer would be capable of tracking - * connection status by itself, with no help from us. It might invoke our - * callback if we had registered one, but only to provide information. Sadly, - * we don't live in that world. Instead, the callback *must* exist and *must* - * call rpc_clnt_{set,unset}_connected, because that's the only way those - * fields get set (with RPC both above and below us on the stack). If we don't - * do that, then rpc_clnt_submit doesn't think we're connected even when we - * are. It calls the socket code to reconnect, but the socket code tracks this - * stuff in a sane way so it knows we're connected and returns EINPROGRESS. - * Then we're stuck, connected but unable to use the connection. To make it - * work, we define and register this trivial callback. - */ Also, consumers of rpc know about state of connection only through the notifications sent by rpc-clnt. So, consumers don't have any extra information to manage the state and hence letting them manage the state is counter intuitive. This patch cleans that up and instead moves the responsibility of state management of rpc layer into itself. Change-Id: I31e641a60795fc480ca753917f4b2579f1e05094 Signed-off-by: Raghavendra G <rgowdapp@redhat.com> Fixes: bz#1585585
* rpc: Don't reset auth_value in disconnectKotresh HR2018-05-241-12/+48
| | | | | | | | | | | | | The auth_value was being reset to AUTH_GLUSTERFS_v2 during rpc disconnect. It shoud not be reset. The disconnect during portmap request can race with handshake. If handshake happens first and disconnect later, auth_value would set to default value and it never sets back to actual auth_value fixes: bz#1579276 Change-Id: Ib46c9e01a97f6defb3fd1e0423fdb4b899b4a361 Signed-off-by: Kotresh HR <khiremat@redhat.com>
* rpc: simplify parameters when a saved frame is forced to unwindZhang Huan2018-03-281-4/+2
| | | | | | | | | When a saved frame is to be forced unwind, there is no need to pass an empty iovector without any data pointed to. Change-Id: I6e858fb38644326e22239b83272b15db656035e5 BUG: 1523122 Signed-off-by: Zhang Huan <zhanghuan@open-fs.com>
* rpc/*: auth-header changesAmar Tumballi2018-01-171-111/+186
| | | | | | | | | | | | | | | | | Introduce another authentication header which can now send more data. This is useful because this data can be common for all the fops, and we don't need to change all the signatures. As part of this, made rpc-clnt.c little more modular to support multiple authentication structures. stack.h changes are placeholder for the ctime etc, can be moved later based on need. updates #384 Change-Id: I6111c13cfd2ec92e2b4e9295896bf62a8a33b2c7 Signed-off-by: Amar Tumballi <amarts@redhat.com>
* rpc: fix use after freed of clnt after rpc transport clenupKinglong Mee2017-12-271-1/+4
| | | | | | | | | | | If the transport object is freed in rpc_transport_unref, a notify of RPC_TRANSPORT_CLEANUP is push to rpc_clnt_notify, where the rpc_clnt(contains conn) is freed. After that, using of conn after rpc_transport_unref is use after freed. Change-Id: I5cac8a8e7ced7c1079930080a12abf02d46667d5 Signed-off-by: Kinglong Mee <mijinlong@open-fs.com>
* glusterfs: Use gcc builtin ATOMIC operator to increase/decreate refcount.Mohit Agrawal2017-12-121-10/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Problem: In glusterfs code base we call mutex_lock/unlock to take reference/dereference for a object.Sometime it could be reason for lock contention also. Solution: There is no need to use mutex to increase/decrease ref counter, instead of using mutex use gcc builtin ATOMIC operation. Test: I have not observed yet how much performance gain after apply this patch specific to glusterfs but i have tested same with below small program(mutex and atomic both) and get good difference. static int numOuterLoops; static void * threadFunc(void *arg) { int j; for (j = 0; j < numOuterLoops; j++) { __atomic_add_fetch (&glob, 1,__ATOMIC_ACQ_REL); } return NULL; } int main(int argc, char *argv[]) { int opt, s, j; int numThreads; pthread_t *thread; int verbose; int64_t n = 0; if (argc < 2 ) { printf(" Please provide 2 args Num of threads && Outer Loop\n"); exit (-1); } numThreads = atoi(argv[1]); numOuterLoops = atoi (argv[2]); if (1) { printf("\tthreads: %d; outer loops: %d;\n", numThreads, numOuterLoops); } thread = calloc(numThreads, sizeof(pthread_t)); if (thread == NULL) { printf ("calloc error so exit\n"); exit (-1); } __atomic_store (&glob, &n, __ATOMIC_RELEASE); for (j = 0; j < numThreads; j++) { s = pthread_create(&thread[j], NULL, threadFunc, NULL); if (s != 0) { printf ("pthread_create failed so exit\n"); exit (-1); } } for (j = 0; j < numThreads; j++) { s = pthread_join(thread[j], NULL); if (s != 0) { printf ("pthread_join failed so exit\n"); exit (-1); } } printf("glob value is %ld\n",__atomic_load_n (&glob,__ATOMIC_RELAXED)); exit(0); } time ./thr_count 800 800000 threads: 800; outer loops: 800000; glob value is 640000000 real 1m10.288s user 0m57.269s sys 3m31.565s time ./thr_count_atomic 800 800000 threads: 800; outer loops: 800000; glob value is 640000000 real 0m20.313s user 1m20.558s sys 0m0.028 Change-Id: Ie5030a52ea264875e002e108dd4b207b15ab7cc7 Signed-off-by: Mohit Agrawal <moagrawa@redhat.com>
* rpc: Eliminate conn->lock contention by using more granular locksMohit Agrawal2017-11-281-10/+2
| | | | | | | | | | | | | | | | | | | | | | | | | rpc_clnt_submit() acquires conn->lock before call to rpc_transport_submit_request() and subsequent queuing of frame into saved_frames list. However, as part of handling RPC_TRANSPORT_MSG_RECEIVED and RPC_TRANSPORT_MSG_SENT notifications in rpc_clnt_notify(), conn->lock is again used to atomically update conn->last_received and conn->last_sent event timestamps. So when conn->lock is acquired as part of submitting a request, a parallel POLLIN notification gets blocked at rpc layer until the request submission completes and the lock is released. To get around this, this patch call clock_gettime (instead to call gettimeofday) to update event timestamps in conn->last_received and conn->last_sent and to call clock_gettime don't need to call mutex_lock because it (clock_gettime) is thread safe call. Note: Run fio on vm after apply the patch, iops is improved after apply the patch. Change-Id: I347b5031d61c426b276bc5e07136a7172645d763 BUG: 1467614 Signed-off-by: Krutika Dhananjay <kdhananj@redhat.com>
* rpc-lib: coverity fixesMilind Changire2017-11-221-0/+12
| | | | | | | | | | | | | | | | | Scan URL: https://download.gluster.org/pub/gluster/glusterfs/static-analysis/master/glusterfs-coverity/2017-11-10-0f524f07/html/ ID: 9 (BAD_SHIFT) ID: 58 (CHECKED_RETURN) ID: 98 (DEAD_CODE) ID: 249, 250, 251, 252 (MIXED_ENUMS) ID: 289, 297 (NULL_RETURNS) ID: 609, 613, 622, 644, 653, 655 (UNUSED_VALUE) ID: 432 (RESOURCE_LEAK) Change-Id: I2349877214dd38b789e08b74be05539f09b751b9 BUG: 789278 Signed-off-by: Milind Changire <mchangir@redhat.com>
* rpc: free conn->name in rpc_clnt_destroy()Niels de Vos2017-10-111-0/+1
| | | | | | Change-Id: Idf99908aa48718a7faf7f0bbc647a679ec548282 BUG: 1443145 Signed-off-by: Niels de Vos <ndevos@redhat.com>
* rpc: free registered callback programsNiels de Vos2017-10-111-0/+7
| | | | | | Change-Id: I8c6f6b642f025d1faf74015b8f7aaecd7ebfd4d5 BUG: 1443145 Signed-off-by: Niels de Vos <ndevos@redhat.com>
* Revert "rpc: disable client on disconnection from rebalance"Milind Changire2017-08-241-4/+0
| | | | | | | | | | | | | | This reverts commit 5b14c11d3cae38bc66006b02217ede485ae30dea. BUG: 1484225 Change-Id: I3269d3fc64de3f3cc6f670ea564a87d7725e10fd Signed-off-by: Milind Changire <mchangir@redhat.com> Reviewed-on: https://review.gluster.org/18113 Smoke: Gluster Build System <jenkins@build.gluster.org> Reviewed-by: Atin Mukherjee <amukherj@redhat.com> Tested-by: Atin Mukherjee <amukherj@redhat.com> Reviewed-by: Raghavendra G <rgowdapp@redhat.com> CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
* rpc: disable client on disconnection from rebalanceMilind Changire2017-08-231-0/+4
| | | | | | | | | | | | | | | | | | | Problem: glusterd rpc code path attempts to reconnect to rebalance process via the reconnect timer even after the rebalance process disconnection Solution: Set the clnt->disabled flag to 1 to avoid reconnection and cause the clnt object to be unref'd Change-Id: I4e38eaef45d2fdea86d25e9dff9f1af0cd29cf66 BUG: 1484225 Signed-off-by: Milind Changire <mchangir@redhat.com> Reviewed-on: https://review.gluster.org/18093 Smoke: Gluster Build System <jenkins@build.gluster.org> Tested-by: Raghavendra G <rgowdapp@redhat.com> Reviewed-by: Raghavendra G <rgowdapp@redhat.com> CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
* rpc: include current second in timed out frame cleanupMilind Changire2017-07-211-1/+1
| | | | | | | | | | | | | | | | | | | Problem: frames which time out at current second are missed out Solution: change test to include frames timing out at current second i.e. timeout <= current.tv_sec instead of timeout < current.tv_sec Change-Id: I459d47856ade2b657a0289e49f7f63da29186d6e BUG: 1468433 Signed-off-by: Milind Changire <mchangir@redhat.com> Reviewed-on: https://review.gluster.org/17722 Smoke: Gluster Build System <jenkins@build.gluster.org> CentOS-regression: Gluster Build System <jenkins@build.gluster.org> Reviewed-by: Raghavendra G <rgowdapp@redhat.com>
* rpc: use GF_ATOMIC_INC to generate rpc_clnt's callidZhou Zhengping2017-05-081-16/+2
| | | | | | | | | | | | Change-Id: I57ad970411db1ccd3d2c56c504c7da9cc221051f BUG: 1448692 Signed-off-by: Zhou Zhengping <johnzzpcrystal@gmail.com> Reviewed-on: https://review.gluster.org/17198 Smoke: Gluster Build System <jenkins@build.gluster.org> NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org> Reviewed-by: Niels de Vos <ndevos@redhat.com> CentOS-regression: Gluster Build System <jenkins@build.gluster.org> Reviewed-by: Raghavendra G <rgowdapp@redhat.com>
* rpc: bump up conn->cleanup_gen in rpc_clnt_reconnect_cleanupAtin Mukherjee2017-03-201-1/+3
| | | | | | | | | | | | | | | | | | | | | | | Commit 086436a introduced generation number (cleanup_gen) to ensure that rpc layer doesn't end up cleaning up the connection object if application layer has already destroyed it. Bumping up cleanup_gen was done only in rpc_clnt_connection_cleanup (). However the same is needed in rpc_clnt_reconnect_cleanup () too as with out it if the object gets destroyed through the reconnect event in the application layer, rpc layer will still end up in trying to delete the object resulting into double free and crash. Peer probing an invalid host/IP was the basic test to catch this issue. Change-Id: Id5332f3239cb324cead34eb51cf73d426733bd46 BUG: 1433578 Signed-off-by: Atin Mukherjee <amukherj@redhat.com> Reviewed-on: https://review.gluster.org/16914 Smoke: Gluster Build System <jenkins@build.gluster.org> NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org> Reviewed-by: Milind Changire <mchangir@redhat.com> CentOS-regression: Gluster Build System <jenkins@build.gluster.org> Reviewed-by: Jeff Darcy <jeff@pl.atyp.us>
* rpc/clnt: remove locks while notifying CONNECT/DISCONNECTRaghavendra G2017-03-011-30/+64
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Locking during notify was introduced as part of commit aa22f24f5db7659387704998ae01520708869873 [1]. The fix was introduced to fix out-of-order CONNECT/DISCONNECT events from rpc-clnt to parent xlators [2]. However as part of handling DISCONNECT protocol/client does unwind saved frames (with failure) waiting for responses. This saved_frames_unwind can be a costly operation and hence ideally shouldn't be included in the critical section of notifylock, as it unnecessarily delays the reconnection to same brick. Also, its not a good practise to pass control to other xlators holding a lock as it can lead to deadlocks. So, this patch removes locking in rpc-clnt while notifying parent xlators. To fix [2], two changes are present in this patch: * notify DISCONNECT before cleaning up rpc connection (same as commit a6b63e11b7758cf1bfcb6798, patch [3]). * protocol/client uses rpc_clnt_cleanup_and_start, which cleans up rpc connection and does a start while handling a DISCONNECT event from rpc. Note that patch [3] was reverted as rpc_clnt_start called in quick_reconnect path of protocol/client didn't invoke connect on transport as the connection was not cleaned up _yet_ (as cleanup was moved post notification in rpc-clnt). This resulted in clients never attempting connect to bricks. Note that one of the neater ways to fix [2] (without using locks) is to introduce generation numbers to map CONNECT and DISCONNECTS across epochs and ignore DISCONNECT events if they don't belong to current epoch. However, this approach is a bit complex to implement and requires time. So, current patch is a hacky stop-gap fix till we come up with a more cleaner solution. [1] http://review.gluster.org/15916 [2] https://bugzilla.redhat.com/show_bug.cgi?id=1386626 [3] http://review.gluster.org/15681 Change-Id: I62daeee8bb1430004e28558f6eb133efd4ccf418 Signed-off-by: Raghavendra G <rgowdapp@redhat.com> BUG: 1427012 Reviewed-on: https://review.gluster.org/16784 Smoke: Gluster Build System <jenkins@build.gluster.org> Reviewed-by: Milind Changire <mchangir@redhat.com> NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org> CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
* rpc: fix obvious typo in cleanup code in rpc_clnt_notifyMateusz Slupny2017-02-191-1/+1
| | | | | | | | | | | | | | | Change-Id: I003e38b238704d3345d46688355bcf3702455ba1 BUG: 1399593 Signed-off-by: Mateusz Slupny <mateusz.slupny@appeartv.com> [ndevos: rebased after I8ff5d1a32 moved the code around] Reviewed-on: https://review.gluster.org/15969 Reviewed-by: Niels de Vos <ndevos@redhat.com> Tested-by: Niels de Vos <ndevos@redhat.com> Smoke: Gluster Build System <jenkins@build.gluster.org> NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org> Reviewed-by: Prashanth Pai <ppai@redhat.com> CentOS-regression: Gluster Build System <jenkins@build.gluster.org> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* socket: socket disconnect should wait for poller thread exitRajesh Joseph2016-12-211-2/+2
| | | | | | | | | | | | | | | | | | | | | When SSL is enabled or if "transport.socket.own-thread" option is set then socket_poller is run as different thread. Currently during disconnect or PARENT_DOWN scenario we don't wait for this thread to terminate. PARENT_DOWN will disconnect the socket layer and cleanup resources used by socket_poller. Therefore before disconnect we should wait for poller thread to exit. Change-Id: I71f984b47d260ffd979102f180a99a0bed29f0d6 BUG: 1404181 Signed-off-by: Rajesh Joseph <rjoseph@redhat.com> Reviewed-on: http://review.gluster.org/16141 Smoke: Gluster Build System <jenkins@build.gluster.org> NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org> CentOS-regression: Gluster Build System <jenkins@build.gluster.org> Reviewed-by: Kaushal M <kaushal@redhat.com> Reviewed-by: Raghavendra Talur <rtalur@redhat.com> Reviewed-by: Raghavendra G <rgowdapp@redhat.com>
* rpc: fix for race between rpc and protocol/clientRajesh Joseph2016-12-051-40/+58
| | | | | | | | | | | | | | | | | | | | | | | | It is possible that the notification thread which notifies protocol/client layer about the disconnection is put to sleep and meanwhile, a fuse thread or a timer thread initiates and completes reconnection to the brick. The notification thread is then woken up and protocol/client layer updates its flags to indicate that network is disconnected. No reconnection is initiated because reconnection is rpc-lib layer's responsibility and its flags indicate that connection is connected. Fix: Serialize connect and disconnect notify Credit: Raghavendra Talur <rtalur@redhat.com> Change-Id: I8ff5d1a3283b47f5c26848a42016a40bc34ffc1d BUG: 1386626 Signed-off-by: Rajesh Joseph <rjoseph@redhat.com> Reviewed-on: http://review.gluster.org/15916 Reviewed-by: Raghavendra G <rgowdapp@redhat.com> Smoke: Gluster Build System <jenkins@build.gluster.org> Reviewed-by: Raghavendra Talur <rtalur@redhat.com> NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org> CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
* Revert "rpc: Fix the race between notification and reconnection"Pranith Kumar Karampuri2016-11-161-4/+3
| | | | | | | | | | | | | | | | This reverts commit a6b63e11b7758cf1bfcb67985e25ec02845f0995. Nithya and Rajesh found that the mount fails sometimes after this patch was merged so reverting it. BUG: 1386626 Change-Id: I959a5b6c7da61368cf4c67c98193c6e8fdd1755d Signed-off-by: Pranith Kumar K <pkarampu@redhat.com> Reviewed-on: http://review.gluster.org/15838 Reviewed-by: N Balachandran <nbalacha@redhat.com> NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org> CentOS-regression: Gluster Build System <jenkins@build.gluster.org> Smoke: Gluster Build System <jenkins@build.gluster.org>
* rpc: Fix the race between notification and reconnectionPranith Kumar K2016-10-241-3/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Problem: There was a hang because unlock on an entry failed with ENOTCONN. Client thinks the connection is down where as server thinks the connection is up. This is the race we are seeing: 1) Connection from client to the brick disconnects. 2) Saved frames unwind is called which unwinds all frames that were wound before disconnect. 3) connection from client to the brick happens and setvolume. 4) Disconnect notification for the connection in 1) comes now and calls client_rpc_notify() which marks the connection to be offline even when the connection is up. This is happening because I/O can retrigger connection before disconnect notification is sent to the higher layers in rpc. Fix: Notify the higher layers that a disconnect happened and then go ahead with reconnect logic. For the logs which point to the information above check: https://bugzilla.redhat.com/show_bug.cgi?id=1386626#c1 Thanks to Raghavendra G for suggesting the correct fix. BUG: 1386626 Change-Id: I3c84ba1f17010bd69049fa88ec5f0ae431f8cda9 Signed-off-by: Pranith Kumar K <pkarampu@redhat.com> Reviewed-on: http://review.gluster.org/15681 NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org> Reviewed-by: Niels de Vos <ndevos@redhat.com> CentOS-regression: Gluster Build System <jenkins@build.gluster.org> Smoke: Gluster Build System <jenkins@build.gluster.org> Reviewed-by: Raghavendra G <rgowdapp@redhat.com>
* rpc: fix unused variable warnings/errorsKaleb S. KEITHLEY2016-08-291-3/+2
| | | | | | | | | | | | | | | | http://review.gluster.org/14085 fixes a/the "leak" - via the generated rpc/xdr headers - of pragmas that mask these warnings. However 14085 won't pass the smoke test until all the warnings are fixed. Change-Id: I20d91091bee0bf8f198a307ebba4b284bc3817ff BUG: 1369124 Signed-off-by: Kaleb S. KEITHLEY <kkeithle@redhat.com> Reviewed-on: http://review.gluster.org/15240 NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org> CentOS-regression: Gluster Build System <jenkins@build.gluster.org> Smoke: Gluster Build System <jenkins@build.gluster.org>
* changelog/rpc: Fix rpc_clnt_t mem leaksKotresh HR2016-07-221-6/+98
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | PROBLEM: 1. Freeing up rpc_clnt object might lead to crashes. Well, it was not a necessity to free rpc-clnt object till now because all the existing use cases needs to reconnect back on disconnects. Hence timer code was not taking ref on rpc-clnt object. Glusterd had some use-cases that led to crash due to ping-timer and they fixed only those code paths that involve ping-timer. Now, since changelog has an use-case where rpc-clnt need to be freed up, we need to fix timer code to take refs 2. In changelog, because of issue 1, only mydata was being freed which is incorrect. And there are races where rpc-clnt object would access the freed mydata which would lead to crashes. Since changelog xlator resides on brick side and is long living process, if multiple libgfchangelog consumers register to changelog and disconnect/reconnect mulitple times, it would result in leak of 'rpc-clnt' object for every connect/disconnect. SOLUTION: 1. Handle ref/unref of 'rpc_clnt' structure in timer functions properly. 2. In changelog, unref 'rpc_clnt' in RPC_CLNT_DISCONNECT after disabling timers and free mydata on RPC_CLNT_DESTROY. RPC SETUP IN CHANGELOG: 1. changelog xlator initiates rpc server say 'changelog_rpc_server' 2. libgfchangelog initiates one rpc server say 'libgfchangelog_rpc_server' 3. libgfchangelog initiates rpc client and connects to 'changelog_rpc_server' 4. In return changelog_rpc_server initiates a rpc client and connects back to 'libgfchangelog_rpc_server' REF/UNREF HANDLING IN TIMER FUNCTIONS: Let's say rpc clnt refcount = 1 1. Take the ref before reigstering callback to timer queue >>>> rpc_clnt_ref (say ref count becomes = 2) 2. Register a callback to timer say 'callback1' 3. If register fails: >>>> rpc_clnt_unref (ref count = 1) 4. On timer expiration, 'callback1' gets called. So unref rpc clnt at the end in 'callback1'. This is corresponding to ref taken in step 1 >>>> rpc_clnt_unref (ref count = 1) 5. The cycle from step-1 to step-4 continues....until timer cancel event happens 6. timer cancel of say 'callback1' If timer cancel fails: Do nothing, Step-4 would have unrefd If timer cancel succeeds: >>>> rpc_clnt_unref (ref count = 1) Change-Id: I91389bc511b8b1a17824941970ee8d2c29a74a09 BUG: 1316178 Signed-off-by: Kotresh HR <khiremat@redhat.com> Reviewed-on: http://review.gluster.org/13658 Smoke: Gluster Build System <jenkins@build.gluster.org> NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org> CentOS-regression: Gluster Build System <jenkins@build.gluster.org> Reviewed-by: Raghavendra G <rgowdapp@redhat.com>
* glusterd/rpc : Discard duplicate Disconnect eventsAtin Mukherjee2016-03-221-0/+20
| | | | | | | | | | | | | | | If a peer rpc disconnect event has been already processed, skip the furthers as processing them are overheads and sometimes may lead to a crash like due to a double free Change-Id: Iec589ce85daf28fd5b267cb6fc82a4238e0e8adc BUG: 1318546 Signed-off-by: Atin Mukherjee <amukherj@redhat.com> Reviewed-on: http://review.gluster.org/13790 Smoke: Gluster Build System <jenkins@build.gluster.com> NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org> CentOS-regression: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Jeff Darcy <jdarcy@redhat.com>
* rpc: Connect back only if rpc is not disabledKotresh HR2016-03-081-1/+1
| | | | | | | | | | | | | | | | | | | | This is to fix regression caused by below patch - http://review.gluster.org/#/c/13456/ As discussed over http://thread.gmane.org/gmane.comp.file-systems.gluster.devel/14284, patch #13456 caused a regression where in if there are any pending rpc invocations, we end up accessing freed object. This patch fixes it by allowing reconnect during rpc submit only if rpc is not disabled. Change-Id: I4ef4dd52bd42368bb89129f98bc973e46c6a39f4 BUG: 1295107 Signed-off-by: Kotresh HR <khiremat@redhat.com> Reviewed-on: http://review.gluster.org/13592 Smoke: Gluster Build System <jenkins@build.gluster.com> NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org> Reviewed-by: Raghavendra G <rgowdapp@redhat.com> CentOS-regression: Gluster Build System <jenkins@build.gluster.com>
* rpc: Fix for rpc_transport_t leakSoumya Koduri2016-02-231-2/+3
| | | | | | | | | | | | | | | | | | | | The transport object needs to get unref'ed when the rpc clnt object is getting destroyed. But currently in rpc_clnt_disable() we set conn->trans to NULL before it gets unref'ed leading to transport object leak. This change is to fix it by setting conn-tran to NULL only when it is being unref'ed. Change-Id: I79ba34e28ae19eb616035f36bbed1c2f47875b94 BUG: 1295107 Signed-off-by: Soumya Koduri <skoduri@redhat.com> Reviewed-on: http://review.gluster.org/13456 Smoke: Gluster Build System <jenkins@build.gluster.com> NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org> CentOS-regression: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Kaleb KEITHLEY <kkeithle@redhat.com> Reviewed-by: Jeff Darcy <jdarcy@redhat.com>
* rpc: Remove unused functionAnoop C S2015-10-011-8/+0
| | | | | | | | | | Change-Id: I0b96b83ad8d06de9b2f5fc14073b94777885a775 BUG: 1261927 Signed-off-by: Anoop C S <anoopcs@redhat.com> Reviewed-on: http://review.gluster.org/12153 Tested-by: NetBSD Build System <jenkins@build.gluster.org> Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Raghavendra G <rgowdapp@redhat.com>
* all: reduce "inline" usageJeff Darcy2015-09-011-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | There are three kinds of inline functions: plain inline, extern inline, and static inline. All three have been removed from .c files, except those in "contrib" which aren't our problem. Inlines in .h files, which are overwhelmingly "static inline" already, have generally been left alone. Over time we should be able to "lower" these into .c files, but that has to be done in a case-by-case fashion requiring more manual effort. This part was easy to do automatically without (as far as I can tell) any ill effect. In the process, several pieces of dead code were flagged by the compiler, and were removed. Change-Id: I56a5e614735c9e0a6ee420dab949eac22e25c155 BUG: 1245331 Signed-off-by: Jeff Darcy <jdarcy@redhat.com> Reviewed-on: http://review.gluster.org/11769 Tested-by: NetBSD Build System <jenkins@build.gluster.org> Reviewed-by: Dan Lambright <dlambrig@redhat.com> Reviewed-by: Kaleb KEITHLEY <kkeithle@redhat.com> Reviewed-by: Niels de Vos <ndevos@redhat.com> Reviewed-by: Raghavendra Bhat <raghavendra@redhat.com> Reviewed-by: Venky Shankar <vshankar@redhat.com>
* rpc: add owner xlator argument to rpc_clnt_newKrishnan Parthasarathi2015-08-121-1/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The @owner argument tells RPC layer the xlator that owns the connection and to which xlator THIS needs be set during network notifications like CONNECT and DISCONNECT. Code paths that originate from the head of a (volume) graph and use STACK_WIND ensure that the RPC local endpoint has the right xlator saved in the frame of the call (callback pair). This guarantees that the callback is executed in the right xlator context. The client handshake process which includes fetching of brick ports from glusterd, setting lk-version on the brick for the session, don't have the correct xlator set in their frames. The problem lies with RPC notifications. It doesn't have the provision to set THIS with the xlator that is registered with the corresponding RPC programs. e.g, RPC_CLNT_CONNECT event received by protocol/client doesn't have THIS set to its xlator. This implies, call(-callbacks) originating from this thread don't have the right xlator set too. The fix would be to save the xlator registered with the RPC connection during rpc_clnt_new. e.g, protocol/client's xlator would be saved with the RPC connection that it 'owns'. RPC notifications such as CONNECT, DISCONNECT, etc inherit THIS from the RPC connection's xlator. Change-Id: I9dea2c35378c511d800ef58f7fa2ea5552f2c409 BUG: 1235582 Signed-off-by: Krishnan Parthasarathi <kparthas@redhat.com> Reviewed-on: http://review.gluster.org/11436 Tested-by: Gluster Build System <jenkins@build.gluster.com> Tested-by: NetBSD Build System <jenkins@build.gluster.org> Reviewed-by: Raghavendra G <rgowdapp@redhat.com>
* client, rpc: make ping-timeout configurable for glusterfs clientsKrishnan Parthasarathi2015-08-051-0/+15
| | | | | | | | | | Change-Id: Idd94adb0457aaffce7330f56f98cebafa2c4dae8 BUG: 1249499 Signed-off-by: Krishnan Parthasarathi <kparthas@redhat.com> Reviewed-on: http://review.gluster.org/11818 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Raghavendra G <rgowdapp@redhat.com> Tested-by: NetBSD Build System <jenkins@build.gluster.org>
* rpc: fix possible deadlock left behind in d448fd1Krishnan Parthasarathi2015-06-171-17/+13
| | | | | | | | | | See http://review.gluster.org/9613 for more details. Change-Id: I05ac0267b8c6f4e9b354acbbdf5469835455fb10 Signed-off-by: Krishnan Parthasarathi <kparthas@redhat.com> Reviewed-on: http://review.gluster.org/10821 Reviewed-by: Raghavendra G <rgowdapp@redhat.com> Tested-by: Raghavendra G <rgowdapp@redhat.com>
* rpc: call transport_unref only on non-NULL transportKrishnan Parthasarathi2015-06-051-2/+8
| | | | | | | | | | | BUG: 1227583 Change-Id: Ifac4dd8c633081483e4eba9d7e5a89837b2a453a Signed-off-by: Krishnan Parthasarathi <kparthas@redhat.com> Reviewed-on: http://review.gluster.org/11041 Tested-by: Gluster Build System <jenkins@build.gluster.com> Tested-by: NetBSD Build System <jenkins@build.gluster.org> Reviewed-by: Raghavendra G <rgowdapp@redhat.com> Tested-by: Raghavendra G <rgowdapp@redhat.com>
* build: do not #include "config.h" in each fileNiels de Vos2015-05-291-5/+0
| | | | | | | | | | | | | | | | | | Instead of including config.h in each file, and have the additional config.h included from the compiler commandline (-include option). When a .c file tests for a certain #define, and config.h was not included, incorrect assumtions were made. With this change, it can not happen again. BUG: 1222319 Change-Id: I4f9097b8740b81ecfe8b218d52ca50361f74cb64 Signed-off-by: Niels de Vos <ndevos@redhat.com> Reviewed-on: http://review.gluster.org/10808 Tested-by: Gluster Build System <jenkins@build.gluster.com> Tested-by: NetBSD Build System Reviewed-by: Kaleb KEITHLEY <kkeithle@redhat.com> Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
* glusterd: fix repeated connection to nfssvc failed msgsKrishnan Parthasarathi2015-05-281-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | ... and disable reconnect timer on rpc_clnt_disconnect. Root Cause ---------- gluster-NFS service wouldn't be started if there are no started volumes that have nfs service enabled for them. Before this fix we would initiate a connect even when the gluster-NFS service wasn't (re)started. Compounding that glusterd_conn_disconnect doesn't disable reconnect timer. So, it is possible that the reconnect timer was in execution when the timer event was attempted to be removed. Change-Id: Iadcb5cff9eafefa95eaf3a1a9413eeb682d3aaac BUG: 1222378 Signed-off-by: Krishnan Parthasarathi <kparthas@redhat.com> Reviewed-on: http://review.gluster.org/10830 Tested-by: NetBSD Build System Reviewed-by: Atin Mukherjee <amukherj@redhat.com> Reviewed-by: Gaurav Kumar Garg <ggarg@redhat.com> Reviewed-by: Kaushal M <kaushal@redhat.com> Tested-by: Kaushal M <kaushal@redhat.com>
* rpc-lib: Fixing the coverity issuesNandaja Varma2015-04-101-7/+8
| | | | | | | | | | | | | | | | | Coverity CIDs: 1210973 1124887 1124888 1124682 1124849 1124503 Change-Id: I012f6cf9d14753f572ab94aae6d442d1ef8df79a BUG: 789278 Signed-off-by: Nandaja Varma <nandaja.varma@gmail.com> Reviewed-on: http://review.gluster.org/9600 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* glusterd: nfs,shd,quotad,snapd daemons refactoringAtin Mukherjee2015-02-201-0/+41
| | | | | | | | | | | | | This patch ports nfs, shd, quotad & snapd with the approach suggested in http://www.gluster.org/pipermail/gluster-devel/2014-December/043180.html Change-Id: I4ea5b38793f87fc85cc9d2cf873727351dedffd2 BUG: 1191486 Signed-off-by: Atin Mukherjee <amukherj@redhat.com> Signed-off-by: Krishnan Parthasarathi <kparthas@redhat.com> Reviewed-on: http://review.gluster.org/9428 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Anand Nekkunti <anekkunt@redhat.com>
* Do not call rpc_transport_unref() on NULL transEmmanuel Dreyfus2014-08-041-2/+4
| | | | | | | | | | | | | | | rpc_clnt_disable() sets rpc->conn->trans to NULL, hence we should not call rpc_transport_unref() afterwards. I moved it before the rpc_clnt_disable() call, but I am not sure it should be called at all, perhaps it should just go away. BUG: 764655 Change-Id: I488d0207494e3a3fad52e64e67b2e740b236b864 Signed-off-by: Emmanuel Dreyfus <manu@netbsd.org> Reviewed-on: http://review.gluster.org/8393 Reviewed-by: Harshavardhana <harsha@harshavardhana.net> Reviewed-by: Raghavendra G <rgowdapp@redhat.com> Tested-by: Raghavendra G <rgowdapp@redhat.com>
* client/rpc: Add ping and msgs statsKrishnan Parthasarathi2014-07-311-0/+4
| | | | | | | | | | | | | | | | | | | This can be seen as below, ># cat $META/graphs/active/vol-client-0/private |grep ping_msgs_sent ping_msgs_sent = 2 ># cat $META/graphs/active/vol-client-0/private |grep "^msgs_sent" msgs_sent = 13 where $META is /<fuse-mountpt>/.meta Change-Id: I2107ec2b045bac701377760635e18758adb943a3 Signed-off-by: Krishnan Parthasarathi <kparthas@redhat.com> Reviewed-on: http://review.gluster.org/8285 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Atin Mukherjee <amukherj@redhat.com> Reviewed-by: Anand Avati <avati@redhat.com>
* rpc: Do not reset @ping_started to 0 in ping callbackKrutika Dhananjay2014-07-091-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | This is to avoid indefinite recursion of the following kind, that could lead to a stack overflow: rpc_clnt_start_ping() -> rpc_clnt_ping() -> rpc_clnt_submit() -> rpc_clnt_start_ping() -> rpc_clnt_ping() -> rpc_clnt_submit() ... and so on, since it is possible that before rpc_clnt_start_ping() is called a second time by the thread executing this codepath, the response to previous ping request could ALWAYS come by and cause epoll thread to reset conn->ping_started to 0. This patch also fixes the issue of excessive ping traffic, which was due to the client sending one ping rpc for every fop in the worst case. Also removed dead code in glusterd. Change-Id: I7c5e6ae3b1c9d23407c0a12a319bdcb43ba7a359 BUG: 1116243 Signed-off-by: Krutika Dhananjay <kdhananj@redhat.com> Reviewed-on: http://review.gluster.org/8257 Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com> Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* glusterd: Handle rpc_connect failure in the event handlerVijaikumar M2014-06-051-4/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | Currently rpc_connect calls the notification function on failure in the same thread, glusterd notification holds the big_lock and hence big_lock is released before rpc_connect In snapshot creation, releasing the big-lock before completeing operation can cause problem like deadlock or memory corruption. Bricks are started as part of snapshot created operation. brick_start releases the big_lock when doing brick_connect and this might cause glusterd crash. There is a similar issue in bug# 1088355. Solution is let the event handler handle the failure than doing it in the rpc_connect. Change-Id: I088d44092ce845a07516c1d67abd02b220e08b38 BUG: 1101507 Signed-off-by: Vijaikumar M <vmallika@redhat.com> Reviewed-on: http://review.gluster.org/7843 Reviewed-by: Krishnan Parthasarathi <kparthas@redhat.com> Reviewed-by: Jeff Darcy <jdarcy@redhat.com> Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Raghavendra G <rgowdapp@redhat.com> Tested-by: Raghavendra G <rgowdapp@redhat.com>
* glusterd: Disable ping-timer between glusterd and brick processVijaikumar M2014-05-191-3/+5
| | | | | | | | | | | | | | | | | | | | | | When there are too many IO happening, brick process epoll thread will be busy and fails to respond to the glusterd pick packet within 30sec. Also epoll thread can be blocked by a big-lock. Solution is to disable ping-timer by default and only enable where ever required Later when the epoll thread model changed and made lighter, we need to revert back this change. http://review.gluster.com/3842 is one such approach. Change-Id: I7f80ad3eb00f7d9c4d4527305932f7cf4920e73f BUG: 1097224 Signed-off-by: Vijaikumar M <vmallika@redhat.com> Reviewed-on: http://review.gluster.org/7753 Reviewed-by: Krishnan Parthasarathi <kparthas@redhat.com> Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* rpc: don't stop sending ping packets to an active server.Krishnan Parthasarathi2014-05-061-24/+0
| | | | | | | | | | | | | - Removed an unnecessary ref on rpc_clnt object. - Removed saved_frames_delete function, which was unused. Change-Id: Ie8a9c4bb20c1fd59744b64b56eb043eca095e5e3 BUG: 1094655 Signed-off-by: Krishnan Parthasarathi <kparthas@redhat.com> Reviewed-on: http://review.gluster.org/7678 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Raghavendra G <rgowdapp@redhat.com> Tested-by: Raghavendra G <rgowdapp@redhat.com>
* glusterd: Ping timer implmentationKrishnan Parthasarathi2014-04-291-0/+15
| | | | | | | | | | | | | | | | | | | | | | | | This patch refactors the existing client ping timer implementation, and makes use of the common code for implementing both client ping timer and the glusterd ping timer. A new gluster rpc program for ping is introduced. The ping timer is only started for peers that have this new program. The deafult glusterd ping timeout is 30 seconds. It is configurable by setting the option 'ping-timeout' in glusterd.vol . Also, this patch introduces changes in the glusterd-handshake path. The client programs for a peer are now set in the callback of dump_versions, for both the older handshake and the newer op-version handshake. This is the only place in the handshake process where we know what programs a peer supports. Change-Id: I035815ac13449ca47080ecc3253c0a9afbe9016a BUG: 1038261 Signed-off-by: Vijaikumar M <vmallika@redhat.com> Signed-off-by: Krishnan Parthasarathi <kparthas@redhat.com> Reviewed-on: http://review.gluster.org/5202 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Anand Avati <avati@redhat.com>
* build: MacOSX Porting fixesHarshavardhana2014-04-241-3/+4
| | | | | | | | | | | | | | | | | | | | | git@forge.gluster.org:~schafdog/glusterfs-core/osx-glusterfs Working functionality on MacOSX - GlusterD (management daemon) - GlusterCLI (management cli) - GlusterFS FUSE (using OSXFUSE) - GlusterNFS (without NLM - issues with rpc.statd) Change-Id: I20193d3f8904388e47344e523b3787dbeab044ac BUG: 1089172 Signed-off-by: Harshavardhana <harsha@harshavardhana.net> Signed-off-by: Dennis Schafroth <dennis@schafroth.com> Tested-by: Harshavardhana <harsha@harshavardhana.net> Tested-by: Dennis Schafroth <dennis@schafroth.com> Reviewed-on: http://review.gluster.org/7503 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Anand Avati <avati@redhat.com>
* rpc: warn and truncate grouplist if RPC/AUTH can not hold everythingNiels de Vos2014-04-081-0/+43
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The GlusterFS protocol currently uses AUTH_GLUSTERFS_V2 in the RPC/AUTH header. This header contains the uid, gid and auxiliary groups of the user/process that accesses the Gluster Volume. The AUTH_GLUSTERFS_V2 structure allows up to 65535 auxiliary groups to be passed on. Unfortunately, the RPC/AUTH header is limited to 400 bytes by the RPC specification: http://tools.ietf.org/html/rfc5531#section-8.2 In order to not cause complete failures on the client-side when trying to encode a AUTH_GLUSTERFS_V2 that would result in more than 400 bytes, we can calculate the expected size of the other elements: 1 | pid 1 | uid 1 | gid 1 | groups_len XX | groups_val (GF_MAX_AUX_GROUPS=65535) 1 | lk_owner_len YY | lk_owner_val (GF_MAX_LOCK_OWNER_LEN=1024) ----+------------------------------------------- 5 | total xdr-units one XDR-unit is defined as BYTES_PER_XDR_UNIT = 4 bytes MAX_AUTH_BYTES = 400 is the maximum, this is 100 xdr-units. XX + YY can be 95 to fill the 100 xdr-units. Note that the on-wire protocol has tighter requirements than the internal structures. It is possible for xlators to use more groups and a bigger lk_owner than that can be sent by a GlusterFS-client. This change prevents overflows when allocating the RPC/AUTH header. Two new macros are introduced to calculate the number of groups that fit in the RPC/AUTH header, when taking the size of the lk_owner in account. In case the list of groups exceeds the maximum possible, only the first groups are passed over the RPC/GlusterFS protocol to the bricks. A warning is added to the logs, so that most system administrators will get informed. The reducing of the number of groups is not a new inventions. The RPC/AUTH header (AUTH_SYS or AUTH_UNIX) that NFS uses has a limit of 16 groups. Most, if not all, NFS-clients will reduce any bigger number of groups to 16. (nfs.server-aux-gids can be used to workaround the limit of 16 groups, but the Gluster NFS-server will be limited to a maximum of 93 groups, or fewer in case the lk_owner structure contains more items.) Change-Id: I8410e59d0fd246d601b54b961d3ae9cb5a858c10 BUG: 1053579 Signed-off-by: Niels de Vos <ndevos@redhat.com> Reviewed-on: http://review.gluster.org/7202 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Harshavardhana <harsha@harshavardhana.net> Reviewed-by: Santosh Pradhan <spradhan@redhat.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* rpc: transport may be destroyed while rpc isn'tKrishnan Parthasarathi2014-03-051-60/+101
| | | | | | | | | | | | | | | | rpc_clnt object is destroyed after the corresponding transport object is destroyed. But rpc_clnt_reconnect, a timer driven function, refers to the transport object beyond its 'life'. Instead, using the embedded connection object prevents use after free problem wrt transport object. Also, access transport object under conn->lock. Change-Id: Iae28e8a657d02689963c510114ad7cb7e6764e62 BUG: 962619 Signed-off-by: Krishnan Parthasarathi <kparthas@redhat.com> Reviewed-on: http://review.gluster.org/6751 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Anand Avati <avati@redhat.com>
generated by cgit (git 2.34.1) at 2024-05-06 05:10:33 +0000