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* Unwind lk using struct flock from a successful serverRaghavendra Bhat2010-05-111-1/+2
| | | | | | | | Signed-off-by: Raghavendra Bhat <raghavendrabhat@gluster.com> Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 882 (directory traversing problem (client crash)) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=882
* cluster/afr: Send the struct flock returned by the server to the user only ↵Pavan Sondur2010-04-271-2/+2
| | | | | | | | | | in the UNWIND path. Signed-off-by: Pavan Vilas Sondur <pavan@gluster.com> Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 521 (SPECFS validation fails over distribute + replicate) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=521
* cluster/afr: Send flock returned by locks xlator to user.Pavan Sondur2010-01-241-1/+1
| | | | | | | | Signed-off-by: Pavan Vilas Sondur <pavan@gluster.com> Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 521 (SPECFS validation fails over distribute + replicate) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=521
* cluster/afr: Don't try to self-heal if there are locks heldVikas Gorur2009-10-301-1/+15
| | | | | | | | | | | If the inodelk_count or entrylk_count is positive on a file/directory, don't try to do self-heal on it. Signed-off-by: Vikas Gorur <vikas@gluster.com> Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 326 ([2.0.8rc9] Spurious self-heal) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=326
* prevent spurious unlocks from afr selfhealAnand Avati2009-10-131-0/+3
| | | | | | | | | | afr selfheal now remembers all the nodes on which locks were successfully held and sends unlocks only to those nodes Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 112 (parallel deletion of files mounted by different clients on the same back-end hangs and/or does not completely delete) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=112
* Changed occurrences of Z Research to Gluster.Vijay Bellur2009-10-071-1/+1
| | | | Signed-off-by: Anand V. Avati <avati@dev.gluster.com>
* cluster/afr: Initialize local->first_up_child in AFR_LOCAL_INIT.Vikas Gorur2009-10-051-26/+0
| | | | | | | Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 285 ("first up child" can change during a transaction) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=285
* cluster/afr: Use user-supplied struct flock to STACK_WINDVikas Gorur2009-07-271-1/+0
| | | | | | | | | | | | afr_lk_cbk: Use the original struct flock supplied by the user to do further STACK_WIND's, and not the flock returned by the previous STACK_WIND. Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 159 (Client hangs when coherent byte range locks is attempted in replicate setup) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=159
* Add a random initial offset to the afr round robin indexErick Tryzelaar2009-07-161-0/+3
| | | | | | | | | | | | | | | This patch helps to distribute load across an afr cluster when you have clients with the same access patterns, such as in benchmarking or map-reduce. By randomly offsetting the initial read_child_rr, clients should distribute reads over the afr nodes on average. A better solution could be to randomly shuffle the children instead of chosing a different initial offset. This should average the reads better across the nodes, but I'm not sure if there are any other consequences to doing this. Signed-off-by: Anand V. Avati <avati@dev.gluster.com>
* Return inode number always from the first up subvolume in AFR.Vikas Gorur2009-07-091-10/+15
| | | | | | | Also fixes a bug in the "KLUDGE" part. It was setting lookup_buf when it should have been setting local->cont.lookup.buf Signed-off-by: Anand V. Avati <avati@dev.gluster.com>
* Always do itransform of the inode number from the first up child.Vikas Gorur2009-05-261-8/+17
| | | | Signed-off-by: Anand V. Avati <avati@dev.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>
* Do not lock entire file for metadata operations.Vikas Gorur2009-05-051-1/+1
| | | | | | | | 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>
* Cleaned up log messages in replicate.Vikas Gorur2009-04-241-38/+38
| | | | Signed-off-by: Anand V. Avati <avati@amp.gluster.com>
* 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>
* afr_lookup_cbk - self-heal getting missedAnand V. Avati2009-04-221-25/+25
| | | | | | | | compare for mismatching sizes and attributes before overwriting local->stbuf for read-child subvolume. This causes files with differing sizes on backed not to get self-healed if xattrs were missing. Also add the ESTALE check for compulsorily failing revalidates in case of 2nd unwind and beyond Signed-off-by: Anand V. Avati <avati@amp.gluster.com>
* Changed xattr format of afr changelog to support adding and removing of ↵Vikas Gorur2009-04-161-22/+30
| | | | | | subvolumes while keeping existing data. Signed-off-by: Anand V. Avati <avati@amp.gluster.com>
* Send statbuf from the same subvolume, even across revalidates.Vikas Gorur2009-04-131-5/+14
| | | | Signed-off-by: Anand V. Avati <avati@amp.gluster.com>
* Fix minor bug in afr_open_cbk.Vikas Gorur2009-04-081-3/+7
| | | | Signed-off-by: Anand V. Avati <avati@amp.gluster.com>
* Fix in changelog logic.Vikas Gorur2009-04-071-2/+103
| | | | | | If a writev fails, remember it by marking it in the fd context. Signed-off-by: Anand V. Avati <avati@amp.gluster.com>
* Made afr inode context a 64-bit packed value instead of a structure.Vikas Gorur2009-04-031-75/+112
| | | | Signed-off-by: Anand V. Avati <avati@amp.gluster.com>
* Load balance read operations among subvolumes in afrVikas Gorur2009-04-021-21/+64
| | | | Signed-off-by: Anand V. Avati <avati@amp.gluster.com>
* Defined afr_inode_ctx_t structure.Vikas Gorur2009-04-021-11/+59
| | | | | | | | Notification of a split-brain situation, which was earlier signalled by the mere presence of inode context is now signalled by the 'split_brain' member in the structure. Signed-off-by: Anand V. Avati <avati@amp.gluster.com>
* Print log message when AFR receives CHILD_UP/DOWN notificationVikas Gorur2009-04-021-0/+6
| | | | Signed-off-by: Anand V. Avati <avati@amp.gluster.com>
* cluster/replicate should propogate the ESTALE error to parent, when at least ↵Basavanagowda Kanur2009-04-021-4/+14
| | | | | | one subvolume returns ESTALE. Signed-off-by: Anand V. Avati <avati@amp.gluster.com>
* Fixed typo in warning string in afr.cVikas Gorur2009-03-261-1/+1
| | | | | | Fixed typo. Signed-off-by: Anand V. Avati <avati@amp.gluster.com>
* Add extra 'volume' parameter to inodelk/entrylk callsVikas Gorur2009-03-121-10/+12
| | | | Signed-off-by: Anand V. Avati <avati@amp.gluster.com>
* check for fd ctx set in changelog_needed_post_op for flush() in afrVikas Gorur2009-02-271-88/+10
| | | | | | | Earlier the check was in afr_flush(), which caused race conditions with writev() Signed-off-by: Anand V. Avati <avati@amp.gluster.com>
* updated copyright header to extend copyright upto 2009Basavanagowda Kanur2009-02-261-1/+1
| | | | | | updated copyright header to include 2009. Signed-off-by: Anand V. Avati <avati@amp.gluster.com>
* protect fd_ctx get/set in afr_transaction and afr.c with locksVikas Gorur2009-02-261-2/+13
| | | | Signed-off-by: Anand V. Avati <avati@amp.gluster.com>
* Unset fd_ctx in afr_flush if it is setVikas Gorur2009-02-261-0/+2
| | | | | | | | | If fd_ctx is set, it means pending array needs to be decremented. However, flush might be called many times and it used to lead to multiple decrements. Fix is to unset fd_ctx on the first flush received Signed-off-by: Anand V. Avati <avati@amp.gluster.com>
* Added all filesVikas Gorur2009-02-181-0/+2338
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