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* io-threads: Change mutexes/condvars to spinlocks/semaphoresShehjar Tikoo2009-05-202-36/+80
| | | | | | | | | | | | | | | | | It seems that use of mutexes is resulting in pretty high thread sleep and wake-up cost. What is worse, if a worker thread has acquired a lock, there is a possibility of the main glusterfs thread being put to sleep. We change the use of mutexes into spinlock. At the same time, we cannot anymore use condvars for notification since the condvar interface depends on mutexes itself. Semaphores come to out rescue. Luckily, even the pthread semaphores have a timedwait interface to allow our idle worker threads to make an exit decision. Further, it is possible that spinlocks are not available on all systems so all this is curtained behind #defines so we can fall back to mutexes and condvars implementation. Signed-off-by: Anand V. Avati <avati@dev.gluster.com>
* io-threads: Reduce default max for threads to 64Shehjar Tikoo2009-05-201-1/+1
| | | | | | | | | We've had complaints from users who've used autoscaling option with default settings for min and max threads, about high memory consumption because of the large default value for max-threads. Signed-off-by: Anand V. Avati <avati@dev.gluster.com>
* io-threads: Support mem-pool allocator for iot_request_tShehjar Tikoo2009-05-202-23/+44
| | | | | | | | | | | | | | | | This commit brings in support for allocation of iot_request_t's in io-threads through the use of the mem-pool. We're hoping that the overheads of hundreds and thousands of small allocations can be avoided through this. The important point to note is that the memory pool is not for the translator as a whole but there is one small memory pool for each worker thread. Not only does that help us avoid malloc overheads for small allocations like iot_request_t but also avoid contention on the heap data structures when multiple threads want an iot_request_t from the pool. Signed-off-by: Anand V. Avati <avati@dev.gluster.com>
* io-threads: Add graceful shutdown of worker threadsRaghavendra G2009-05-202-25/+79
| | | | Signed-off-by: Anand V. Avati <avati@dev.gluster.com>
* io-threads: handle memory allocation failuresRaghavendra G2009-05-201-197/+760
| | | | Signed-off-by: Anand V. Avati <avati@dev.gluster.com>
* Change errno to EAGAIN in readv/writevVikas Gorur2009-05-191-6/+7
| | | | | | | | When mandatory locks are enabled and a read/write would block due to a lock and if the fd is opened with O_NONBLOCK, return EAGAIN (previously EWOULDBLOCK). Signed-off-by: Anand V. Avati <avati@amp.gluster.com>
* Bug fix in pl_readv/writev to handle the mandatory lock case properly.Vikas Gorur2009-05-181-23/+21
| | | | Signed-off-by: Anand V. Avati <avati@amp.gluster.com>
* client-protocol: Fix memory corruption in client_lookupRaghavendra G2009-05-161-13/+7
| | | | | | | | - memory corruption was due to new members being added between allocation of buffer for serializing xattr_req dictionary and dict_serialize of xattr_req. Signed-off-by: Anand V. Avati <avati@amp.gluster.com>
* make getxattr fail with ERANGE if reply is bigger than what was requestedCsaba Henk2009-05-161-31/+25
| | | | | | Edited by avati: make the function signature of fuse_xattr_reply_buf() use 'const char *value' instead of 'char *value' Signed-off-by: Anand V. Avati <avati@amp.gluster.com>
* avoid duplicate mounts while using mount.glusterfsAmar Tumballi2009-05-161-1/+1
| | | | | | | This change is needed as the format of how the /etc/mtab entry of glusterfs mount looks is now changed. Signed-off-by: Anand V. Avati <avati@amp.gluster.com>
* replace BIG_FUSE_CHANNEL_SIZE with 'this->ctx->page_size'Amar Tumballi2009-05-161-9/+9
| | | | | | | Send the struct stat's 'blksize' variable same as GlusterFS's page-size, instead of BIG_FUSE_CHANNEL_SIZE. Signed-off-by: Anand V. Avati <avati@amp.gluster.com>
* posix: Fix build warning on incorrect typeShehjar Tikoo2009-05-161-1/+1
| | | | | | | | | This fixes a build warning due to use of incorrect type for size_t, for Core 2 Duo. Extra fix from avati: change %ld to GF_PRI_SIZET Signed-off-by: Anand V. Avati <avati@amp.gluster.com>
* stripe init 'block-size' pattern parsing bug fixed.2.0.1Amar Tumballi2009-05-081-59/+78
| | | | | | ref: http://savannah.nongnu.org/bugs/?26416 Signed-off-by: Anand V. Avati <avati@amp.gluster.com>
* Set op_errno properly in afr_flush.Vikas Gorur2009-05-081-0/+1
| | | | Signed-off-by: Anand V. Avati <avati@amp.gluster.com>
* symlink-cache: fix return value of readlinkRaghavendra G2009-05-071-2/+2
| | | | | | | | | - sc_readlink wrongly returned strlen (link) + 1 when link was present in cache. - this fixes rt #828. Since fuse_readlink_cbk does link[op_ret] = '\0', there was a memory corruption. Signed-off-by: Anand V. Avati <avati@amp.gluster.com>
* fix in mount.glusterfs for proper direct io mode option.Amar Tumballi2009-05-071-1/+1
| | | | | | | fixes the bug which causes GlusterFS not to have valid 'direct-io' option through mount command or /etc/fstab entries. Signed-off-by: Anand V. Avati <avati@amp.gluster.com>
* protocol/client: indentation fixesAnand V. Avati2009-05-071-926/+737
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* protocol/client: removed conf->childAnand V. Avati2009-05-072-603/+0
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* transport shortcut b/w client and serverAnand V. Avati2009-05-072-0/+13
| | | | | | This patch makes the server pass back the transport pointer of the client. If the UUID matches, the client makes the local transport 'shortcut' with the remote transport (pointer received from server) The shortcut simulates a socket queue. Instead of serialized messages going over the network and getting queued in the tcp socket queue, the messages get queued in a transport specific queue picked by a polling thread.
* fix log message from transport-timeout to frame-timeoutAnand V. Avati2009-05-061-1/+1
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* afr self-heal: update file size of the returning stat buf with source file's ↵Anand V. Avati2009-05-061-0/+1
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* log level fixes in read-aheadAnand V. Avati2009-05-051-6/+6
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* log level fix in storage/posixAnand V. Avati2009-05-051-1/+1
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* io-cache logging level fixesAnand V. Avati2009-05-054-33/+32
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* Do not lock entire file for metadata operations.Vikas Gorur2009-05-052-8/+8
| | | | | | | | Metadata operations now lock only a single byte at offset (LLONG_MAX - 1) instead of the whole file, to avoid contention with writev(). Signed-off-by: Anand V. Avati <avati@amp.gluster.com>
* Made afr_flush a 'quick-unwind' transaction.Vikas Gorur2009-05-051-6/+67
| | | | Signed-off-by: Anand V. Avati <avati@amp.gluster.com>
* io-threads: Clarify thread count rangeShehjar Tikoo2009-05-052-16/+23
| | | | | | | | | | | | | | | This patch cleans up io-threads behaviour regarding the range values that can be specified for min-threads and max-threads. THe major change is that the min threads have been reduced to 2 to signify that io-threads needs minimum two threads for its operation, while keeping the default number of threads at 16. The idea is to decouple the default thread count from the minimum thread count. Note to Avati: This applies over Raghu's indentation and logging take-3 patch. Signed-off-by: Anand V. Avati <avati@amp.gluster.com>
* io-cache: indentation and logging fixesRaghavendra G2009-05-054-509/+426
| | | | Signed-off-by: Anand V. Avati <avati@amp.gluster.com>
* io-threads: indentation and logging fixesRaghavendra G2009-05-052-199/+250
| | | | Signed-off-by: Anand V. Avati <avati@amp.gluster.com>
* Cleaned up log messages in storage/posix.Vikas Gorur2009-05-051-181/+214
| | | | Signed-off-by: Anand V. Avati <avati@amp.gluster.com>
* write-behind: indentation and logging fixesRaghavendra G2009-04-301-158/+74
| | | | Signed-off-by: Anand V. Avati <avati@amp.gluster.com>
* read-ahead: indentation and logging fixesRaghavendra G2009-04-302-105/+84
| | | | Signed-off-by: Anand V. Avati <avati@amp.gluster.com>
* bug fix in server protocol segfault when the volume file key is NULLAmar Tumballi2009-04-301-0/+4
| | | | Signed-off-by: Anand V. Avati <avati@amp.gluster.com>
* Cleaned up log messages in features/locks.Vikas Gorur2009-04-303-57/+64
| | | | Signed-off-by: Anand V. Avati <avati@amp.gluster.com>
* cluster/unify - unify_forget() should not try to access inode->ctx, if ↵Basavanagowda Kanur2009-04-301-1/+1
| | | | | | inode->st_mode is not set. Signed-off-by: Anand V. Avati <avati@amp.gluster.com>
* protocol/server indentation fixesAnand V. Avati2009-04-281-1532/+1048
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* protocol/server log level fixesAnand V. Avati2009-04-281-117/+118
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* protocol client log cleanupAnand V. Avati2009-04-282-31/+37
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* fuse-bridge log cleanupAnand V. Avati2009-04-281-486/+373
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* dht logging cleanupAnand V. Avati2009-04-283-10/+14
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* afr logging cleanupAnand V. Avati2009-04-284-52/+45
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* log message cleanup in distributeAnand V. Avati2009-04-249-291/+242
| | | | Signed-off-by: Anand V. Avati <avati@amp.gluster.com>
* Cleaned up log messages in replicate.Vikas Gorur2009-04-2410-186/+179
| | | | Signed-off-by: Anand V. Avati <avati@amp.gluster.com>
* Cleaned up log messages in client-protocol.Vikas Gorur2009-04-242-88/+97
| | | | Signed-off-by: Anand V. Avati <avati@amp.gluster.com>
* Cleaned up log messages in mount/fuse.Vikas Gorur2009-04-241-120/+120
| | | | Signed-off-by: Anand V. Avati <avati@amp.gluster.com>
* Remove log level TRACE and the macro GF_TRACE.Vikas Gorur2009-04-241-1/+1
| | | | Signed-off-by: Anand V. Avati <avati@amp.gluster.com>
* rename transport-timeout to frame-timeout, and set default to 30mins2.0.0Anand V. Avati2009-04-242-16/+16
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* Do not fail lookup() in case of split-brain.Vikas Gorur2009-04-231-6/+0
| | | | Signed-off-by: Anand V. Avati <avati@amp.gluster.com>
* "option unhashed-sticky-bit on/off"krishna2009-04-233-5/+25
| | | | | | | | "option unhashed-sticky-bit on/off" will configure distribute to set or not the S_ISVTX bit in the stat.st_mode of the actual file in case it is pointed to by the link file. This can be enabled during migration. Signed-off-by: Anand V. Avati <avati@amp.gluster.com>
* fix build warning in locks translatorAnand V. Avati2009-04-231-1/+1
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