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* nsr/jbr: Renaming nsr to jbrAvra Sengupta2016-04-251-116/+0
| | | | | | | | | | | | | | | As per community consensus, we have decided to rename nsr to jbr(Journal-Based-Replication). This is the patch to rename the "nsr" code to "jbr" Change-Id: Id2a9837f2ec4da89afc32438b91a1c302bb4104f BUG: 1328043 Signed-off-by: Avra Sengupta <asengupt@redhat.com> Reviewed-on: http://review.gluster.org/13899 Smoke: Gluster Build System <jenkins@build.gluster.com> CentOS-regression: Gluster Build System <jenkins@build.gluster.com> NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org> Reviewed-by: Jeff Darcy <jdarcy@redhat.com>
* nsr: Introducing a happy path test caseAvra Sengupta2016-03-311-0/+2
| | | | | | | | | | | | | | | | | Write infra for nsr_server to not send a CHILD_UP before it gets a CHILD_UP from a quorum of it's children. Using the CHILD_UP received in the nsr client translator from the server, to decide the right time for starting the I/Os Change-Id: I9551638b306bdcbc6bae6aeda00316576ea832fe Signed-off-by: Avra Sengupta <asengupt@redhat.com> Reviewed-on: http://review.gluster.org/13623 CentOS-regression: Gluster Build System <jenkins@build.gluster.com> Smoke: Gluster Build System <jenkins@build.gluster.com> NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org> Reviewed-by: Jeff Darcy <jdarcy@redhat.com>
* NSR : nsr server code generation patchJeff Darcy2016-02-111-0/+114
The NSR-server with this patch, appoints the first node on every replica subvolume, as the leader for that subvolume. On receiving a 'write' fop, the leader first checks if there is quorum in the replica subvolume to proceeed. In case there isn't it fails with EROFS. If there is quorum, the leader forwards the fop to the followers. The followers on receiving the fop, perform the operation, and based on the success or failure of the outcome send a +ve or a -ve ack to the leader. The leader after receiving acks from the followers performs a quorum check of the acks, to see if it should even try to perform the fop. If quorum is not being met, and the leader's outcome wouldn't affect quorum, then it would send -ve ack to the client without even performing the fop. If quorum is being met, the leader will then try the fop on itself, and based on it's outcome perform a quorum check of all the acks received (this time, including it's own). Based on the result of the quorum check (irrespective of the outcome on the leader), a +ve or -ve ack is send back to the client. Change-Id: I860654b74c53e9b139b37dba43848e5504df6dce Signed-off-by: Avra Sengupta <asengupt@redhat.com> Reviewed-on: http://review.gluster.org/12705 Smoke: Gluster Build System <jenkins@build.gluster.com> Tested-by: Jeff Darcy <jdarcy@redhat.com> CentOS-regression: Gluster Build System <jenkins@build.gluster.com> NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org> Reviewed-by: Jeff Darcy <jdarcy@redhat.com>