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* performance/write-behind: Add a NULL check for request->stub before checking ↵Raghavendra G2009-09-241-1/+2
| | | | | | | | | | | | | | | | | request->stub->fop. - for non-write wind requests, the request structure outlives the stub. The call stub is destroyed when stack is wound but request is destroyed only when the reply has come. (for writes, both stub and request are destroyed when refcount becomes 0, which happens only when the write operation is stack unwound and a reply for the write operation has come from underlying translators, for non-write unwind requests the request is first destroyed before resuming the stub). Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 280 (simple stripe, with write-behind set up, when dbench is run client crashes.) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=280
* fuse: emit a flush from release if we didn't get an adjacent FLUSH message ↵Csaba Henk2009-09-231-5/+51
| | | | | | | | | from the kernel Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 223 (flush not sent) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=223
* Implemented inodelks with support for domains.Pavan Vilas Sondur2009-09-236-75/+644
| | | | | | | Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 222 (Enhance Internal locks to support multilple domains and rewrite inodelks) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=222
* Implemented entry locks and support for domains.Pavan Vilas Sondur2009-09-236-26/+681
| | | | | | | Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 222 (Enhance Internal locks to support multilple domains and rewrite inodelks) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=222
* Removed internal.c and old domain definition in locks.Pavan Vilas Sondur2009-09-233-906/+7
| | | | | | | Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 222 (Enhance Internal locks to support multilple domains and rewrite inodelks) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=222
* mount.glusterfs had a problem understanding when "volfile" was given as one ↵Harshavardhana Ranganath2009-09-231-5/+6
| | | | | | | | | of the mount arguments. Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 204 (mount.glusterfs mounts to incorrect mount point) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=204
* performance/write-behind: store currently aggregated data size in wb_fileRaghavendra G2009-09-231-27/+30
| | | | | | | | | | - this helps us to not traverse the request list whenever we need currently aggregated data in the queue Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 276 (write behind needs to be optimized.) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=276
* performance/write-behind: store the current window size in wb_file.Raghavendra G2009-09-231-43/+39
| | | | | | | | | | - this would increase the performance since we don't have to traverse the request list every time we need the current window size. Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 276 (write behind needs to be optimized.) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=276
* performance/write-behind: reduce usage of iov_length.Raghavendra G2009-09-231-47/+27
| | | | | | | | | | - request structure now holds a member write_size which is initialised at the time of request creation and used later. Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 276 (write behind needs to be optimized.) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=276
* cluster/afr: Add new option "data-self-heal-algorithm"Vikas Gorur2009-09-225-3/+36
| | | | | | | | | | option: data-self-heal-algorithm type: string default: "full" This option allows the user to specify the algorithm to be used for data self-heal. Currently supported values are "full" and "diff". Signed-off-by: Anand V. Avati <avati@dev.gluster.com>
* cluster/afr: Add the "diff" self-heal algorithm.Vikas Gorur2009-09-223-2/+362
| | | | | | | | | | | The "diff" self-heal algorithm works as follows: For each block: Compute MD5 checksum on source and all sinks If checksum on a sink differs from source: Read block from source and write to sinks Signed-off-by: Anand V. Avati <avati@dev.gluster.com>
* cluster/afr: Make the self-heal algorithm pluggable.Vikas Gorur2009-09-225-168/+287
| | | | | | | | Abstract the read/write loop part of data self-heal. This patch has support for the "full" (i.e., read and write entire file) algorithm. Signed-off-by: Anand V. Avati <avati@dev.gluster.com>
* cluster/afr: Open source and sinks in read/write mode during self-heal.Vikas Gorur2009-09-221-2/+2
| | | | | | | Since a self-heal algorithm (e.g., rsync) might want to both read and write from both the source and sink files, open them as O_RDWR. Signed-off-by: Anand V. Avati <avati@dev.gluster.com>
* protocol/server: Implement rchecksum.Vikas Gorur2009-09-221-1/+80
| | | | Signed-off-by: Anand V. Avati <avati@dev.gluster.com>
* protocol/client: Implement rchecksum.Vikas Gorur2009-09-221-0/+71
| | | | Signed-off-by: Anand V. Avati <avati@dev.gluster.com>
* storage/posix: Implement rchecksum.Vikas Gorur2009-09-221-0/+66
| | | | Signed-off-by: Anand V. Avati <avati@dev.gluster.com>
* performance/write-behind: add option "enable-trickling-writes".Raghavendra G2009-09-221-22/+41
| | | | | | | | | | | | | | - With this option enabled, writes are stack-wound even though not enough data is aggregated, provided there are no write-requests which are stack-wound but reply is yet to come. The reason behind this option is to make use of the network, which is relatively free (with no writes or replies in transit). However, with non-standard block-sizes of writes the performance can actually degrade. Hence making this configurable. Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 276 (write behind needs to be optimized.) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=276
* performance/write-behind: reduce traversal of request list during wb_mark_winds.Raghavendra G2009-09-221-35/+28
| | | | | | | | | | | | | | | | - move all the decision making code to __wb_can_wind. - don't continue traversing the request list, once we know any of the following conditions are true: * requests other than write are present in queue. * writes are happening at non-contiguous offsets. * there are no write requests, which are wound to server but not yet received the reply. * enough data is aggregated for writing. Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 276 (write behind needs to be optimized.) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=276
* performance/write-behind: reduce list-traversal during wb_mark_unwindsRaghavendra G2009-09-221-13/+19
| | | | | | | | | | - don't traverse entire request list to get the window-size, instead break when current window size becomes greater than configured limit. Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 276 (write behind needs to be optimized.) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=276
* performance/write-behind: remove redundant traversal of write-requests in ↵Raghavendra G2009-09-221-3/+5
| | | | | | | | | | | | the wind list in wb_ sync. - no need of getting the total_count of number of requests in the list. Even if there is a single request, we need to sync it. Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 276 (write behind needs to be optimized.) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=276
* performance/write-behind: Aggregate adjacent contiguous write-buffers into ↵Raghavendra G2009-09-221-1/+77
| | | | | | | | | single iobuf. Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 276 (write behind needs to be optimized.) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=276
* performance/write-behind: fine-tune logic of wb_mark_windsRaghavendra G2009-09-221-65/+14
| | | | | | | | | | | | | | | - remove wb_mark_wind_aggregegate_size_aware, since wb_mark_wind_all does the same work (with check for whether current aggregated data size is greater than the configured limit before calling it). Moreover, wb_mark_wind_aggregate_size_aware called __wb_get_aggregate_size redundantly, thereby reducing the performance, since for small sized large number of writes, traversing the list of requests takes significant amount of time. Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 276 (write behind needs to be optimized.) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=276
* storage/posix: Update nr_files after system call succeeds.Vikas Gorur2009-09-221-12/+12
| | | | | | | | | | In posix_open(), posix_create(), and posix_close(), update stats->nr_files only after the FOP has succeeded. Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 248 (Updating stats in posix is incorrect) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=248
* performance/quick-read: refine logic of qr_readv.Raghavendra G2009-09-221-3/+14
| | | | | | | | | | - An extra vector was being allocated when the number of bytes being read from cache were equal to the iobuf size. Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 274 (Memory corruption in Apache running on booster) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=274
* performance/quick-read: optimizations to lookupRaghavendra G2009-09-221-24/+49
| | | | | | | | | | | - qr_lookup not to send request for file-content if the cache is already present during revalidates. - flush the cache in qr_lookup_cbk if the cache is not in sync with the file. Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 273 (Code review and optimize quick-read) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=273
* performance/quick-read: make a comment more explicit.Raghavendra G2009-09-221-2/+2
| | | | | | | Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 273 (Code review and optimize quick-read) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=273
* performance/quick-read: checking for qr_file in inode-context and creating ↵Raghavendra G2009-09-221-30/+45
| | | | | | | | | if not present should be atomic. Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 273 (Code review and optimize quick-read) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=273
* performance/quick-read: refine the logic in qr_lookup.Raghavendra G2009-09-221-40/+54
| | | | | | | | | | | | | - a new size has to be set in xattr_req only if (quick-read is configured with a maximum file size limit && ((xattr_req does not have a request key for getting content) || (the size requested in xattr_req is not equal to configured size in quick-read))) Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 273 (Code review and optimize quick-read) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=273
* protocol/client: access glusterfs context from the ctx member of xlator objectRaghavendra G2009-09-221-1/+1
| | | | | | | | | | - A global context pointer cannot be used with libglusterfsclient, since there can be many contexts in a single process. Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 271 (applications using booster protocol/client crash in client_setvolume_cbk.) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=271
* performance/write-behind: check for the presence of context only in fds not ↵Raghavendra G2009-09-221-6/+12
| | | | | | | | | opened on directories. Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 260 (ls on booster VMP results in error: "File descriptor in bad state") URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=260
* client-protocol: fix race-condition encountered while accessing fdctxRaghavendra G2009-09-221-47/+218
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - In protocol/client, fdctx is accessed by two sets of procedures, protocol_client_mark_fd_bad falls in one set whereas the other set consists of all fops which receive fd as an argument. The way these fdctxs are got is different in these two sets. While in the former set, fdctx is accessed through conf->saved_fds, which is a list of fdctxs of fds representing opened/created files. In the latter set, fdctxs are got directly from fd through fd_ctx_get(). Now there can be race conditions between two threads executing one procedure from these two sets. As an example let us consider following scenario: A flush operation is timed out and polling thread executing protocol_client_mark_fd_bad, fuse thread executing client_release. This can happen because, immediately a reply for flush is written to fuse, a release on the same fd can be sent to glusterfs and the polling thread still might be doing cleanup. Consider following set of events: 1. fuse thread does fd_ctx_get (fd). 2. polling thread gets the same fdctx but through conf->saved_fds. 3. Now both threads go ahead and does list_del (fdctx) and eventually free fdctx. In other situations the same set events might occur and the threads executing fops other than flush in the second set might be accessing a fdctx freed in protocol_client_mark_fd_bad. Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 127 (race-condition in accessing fdctx in protocol/client) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=127
* performance/quick-read: access glusterfs_ctx from xlator instead of using ↵Raghavendra G2009-09-171-1/+1
| | | | | | | | | | | | | | glusterfs_get_ctx - since glusterfs_get_ctx gets the global context pointer, there can be problems in a multithreaded application running on libglusterfsclient doing multiple glusterfs_inits. Hence use context specific to the current xlator tree stored in each xlator object. Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 240 (segmentation fault in qr_readv) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=240
* Add iot_fxattrop to io-threadsPavan Sondur2009-09-171-0/+1
| | | | | | | | | It was already implemented but not set to .fxattrop Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 267 (Add fxattrop to iothreads) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=267
* Dumop inodectx addedVijay Bellur2009-09-163-13/+70
| | | | | | | | | | Added dumpop inodectx. Support for dumop inodectx added in dht, locks and client-protocol. Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 213 (Support for process state dump) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=213
* Changed prototype for inode_table_dump() and inode_dump().Vijay Bellur2009-09-163-3/+53
| | | | | | | | | | Changed prototype for inode_table_dump() and inode_dump() Added support for dumpop inode in mount/fuse and protocol/server Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 213 (Support for process state dump) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=213
* protocol/client: Support for dumpop priv.Vijay Bellur2009-09-161-0/+56
| | | | | | | Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 213 (Support for process state dump) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=213
* mount/fuse: Support for dumpop priv.Vijay Bellur2009-09-161-0/+47
| | | | | | | Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 213 (Support for process state dump) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=213
* cluster/dht: Support for dumpop priv.Vijay Bellur2009-09-161-0/+134
| | | | | | | Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 213 (Support for process state dump) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=213
* io-cache: fix table->max_pri to 1 as the lowest priorityAnand Avati2009-09-161-1/+2
| | | | | | | | | | | | | patch http://patches.gluster.com/patch/1319/ breaks when no priority is mentioned in the config. the patch makes ioc_get_priority() return 1 as the value when no priority is given, but ioc_get_priority_list() was still returning 0 as the max_pri (maximum priority) which would result in lru list heads not getting initialized Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 261 (support for disabling caching of certain files) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=261
* cluster/stripe, when dbench is run, client crashes because in stripe.c priv ↵Vinayak Hegde2009-09-161-1/+4
| | | | | | | | | is dreferenced without initialising. Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 266 (In stripe client crashes after some time when disk space is full) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=266
* 2.0.6 patch for io-cache pattern-matched non-cachingStephan von Krawczynski2009-09-151-5/+23
| | | | | | | | | | | | | | | | | | Hello all, here is a small feature patch. Its intention is to give the user more control over the files performance/io-cache really caches. If the user knows exactly which files should be cached and which shouldn't there is currently no way to tell glusterfs _not_ to cache certain pattern. This patch allows you to disable caching by setting the priority of a pattern to "0". If you do not give any priority option it works just like before and caches everything. Honestly I am not totally sure that disabling caching works the way we did it, please comment. Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 261 (support for disabling caching of certain files) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=261
* storage/posix: transform inode number in stat structureRaghavendra G2009-09-151-133/+446
| | | | | | | | | | - when export directory is configured to span across multiple mountpoints, the inode number has to be transformed in order to make it unique. Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 254 (storage/posix has to do inode number transformation wherever it unwinds with a stat structure) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=254
* protocol/server: server_stub_resume should check for failure of lookup when ↵Raghavendra G2009-09-131-1/+2
| | | | | | | | | oldloc.parent is NULL. Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 215 (crash on ib-verbs in 2.0.6-rc4) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=215
* mount/fuse: Set d_type in readdir_cbk using the stat buf for the entry.Vikas Gorur2009-09-091-1/+32
| | | | | | | Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 207 ([ glusterfs 2.0.6rc4 ] - "ls --color" takes time) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=207
* cluster/afr: Check op_ret in afr_getxattr_cbk before accessing dictVikas Gorur2009-09-081-1/+2
| | | | | | | Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 250 (Crash in replicate getxattr) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=250
* cluster/afr: Do not try to self-heal "/"Vikas Gorur2009-09-081-8/+16
| | | | | | | | | | If the root directory does not exist on a subvolume, don't try to create it. Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 28 (Deleting a backend export directory in an AFR setup can cause a segfault while trying to self heal) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=28
* performance/write-behind: hold locks when accessing members of wb_file.Raghavendra G2009-09-081-25/+99
| | | | | | | Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 243 (Hold locks when accessing members of wb_file_t.) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=243
* performance/write-behind: communicate back the errors in writes to servers, ↵Raghavendra G2009-09-081-1/+12
| | | | | | | | | in the next immediate writes from application. Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 242 (If any of the writes fail, write-behind should not wait till the fd is closed for reporting errors) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=242
* performance/quick-read: if open fails during cache validation, don't ↵Raghavendra G2009-09-082-2/+24
| | | | | | | | | continue validation process. Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 232 (Quick-read: if open fails during cache validation, don't continue validation process.) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=232
* performance/quick-read: Fix access of freed memory in qr_open_cbk.Raghavendra G2009-09-081-1/+9
| | | | | | | | | | | | | - It may so happen that current frame might be unwound and local might be freed when waiting operations are resumed. Hence store the information of whether this frame belongs to an open call in a local variable, instead accessing the flag from local at the end of qr_open_cbk. Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 231 (Quick-read: Fix access of freed memory in qr_open_cbk.) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=231
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