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* protocol/server: make listen backlog value as configurableMohammed Rafi KC2017-06-081-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | problem: When we call listen from protocol/server, we are giving a hard coded valie of 10 if it is not manually given. With multiplexing, especially when glusterd restarts all clients may try to connect to the server at a time. Which will result in overflowing the queue, and kernel will complain about the errors. Solution: This patch will introduce a volume set command to make backlog value as a configurable. This patch also changes the default values for backlog from 10 to 128. This changes is only applicable for sockets listening from protocol. Example: gluster volume set <volname> transport.listen-backlog 1024 Note: 1 Brick has to be restarted to get this value in effect 2 This changes won't be reflected in glusterd, or other xlators which calls listen. If you need, you have to add this option to the volfile. Change-Id: I0c5a2bbf28b5db612f9979e7560e05dd82b41477 BUG: 1456405 Signed-off-by: Mohammed Rafi KC <rkavunga@redhat.com> Reviewed-on: https://review.gluster.org/17411 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> Reviewed-by: Raghavendra Talur <rtalur@redhat.com> Reviewed-by: Atin Mukherjee <amukherj@redhat.com> Reviewed-by: Niels de Vos <ndevos@redhat.com> Reviewed-by: Jeff Darcy <jeff@pl.atyp.us>
* trash: fix problem with trash feature under multiplexingJeff Darcy2017-02-091-1/+3
| | | | | | | | | | | | | | | | | | With multiplexing, the trash translator gets a reconfigure call before a notify(CHILD_UP). In this case, priv->trash_itable was not yet initialized, so the reconfigure would get a SEGV. Moving the itable allocation to init seems to fix it, so trash can be reenabled. Change-Id: I21ac2d7fc66bac1bc4ec70fbc8bae306d73ac565 BUG: 1420434 Signed-off-by: Jeff Darcy <jdarcy@redhat.com> Reviewed-on: https://review.gluster.org/16567 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: Anoop C S <anoopcs@redhat.com> Reviewed-by: jiffin tony Thottan <jthottan@redhat.com> Reviewed-by: Shyamsundar Ranganathan <srangana@redhat.com>
* tests: fix online_brick_count for multiplexingJeff Darcy2017-02-071-7/+11
| | | | | | | | | | | | | | | | | | The number of brick processes no longer matches the number of bricks, therefore counting processes doesn't work. Counting *pidfiles* does. Ironically, the fix broke multiplex.t which used this function, so it now uses a different function with the old process-counting behavior. Also had to fix online_brick_count and kill_node in cluster.rc to be consistent with the new reality. Change-Id: I4e81a6633b93227e10604f53e18a0b802c75cbcc BUG: 1385758 Signed-off-by: Jeff Darcy <jdarcy@redhat.com> Reviewed-on: https://review.gluster.org/16527 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> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* core: run many bricks within one glusterfsd processJeff Darcy2017-01-301-0/+63
This patch adds support for multiple brick translator stacks running in a single brick server process. This reduces our per-brick memory usage by approximately 3x, and our appetite for TCP ports even more. It also creates potential to avoid process/thread thrashing, and to improve QoS by scheduling more carefully across the bricks, but realizing that potential will require further work. Multiplexing is controlled by the "cluster.brick-multiplex" global option. By default it's off, and bricks are started in separate processes as before. If multiplexing is enabled, then *compatible* bricks (mostly those with the same transport options) will be started in the same process. Change-Id: I45059454e51d6f4cbb29a4953359c09a408695cb BUG: 1385758 Signed-off-by: Jeff Darcy <jdarcy@redhat.com> Reviewed-on: https://review.gluster.org/14763 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: Vijay Bellur <vbellur@redhat.com>