FreeBSD source tree https://cgit-dev.freebsd.org/src/atom?h=upstream%2F10.4.0 2015-10-05T08:57:16Z 2015-10-05T08:57:16Z Alexander Motin mav@FreeBSD.org 2015-10-05T08:57:16Z urn:sha1:e1a5dd74698f229e792996bbcabe3a6108c6d3f2 CTL HA functionality was originally implemented by Copan many years ago, but large part of the sources was never published. This change includes clean room implementation of the missing code and fixes for many bugs. This code supports dual-node HA with ALUA in four modes: - Active/Unavailable without interlink between nodes; - Active/Standby with second node handling only basic LUN discovery and reservation, synchronizing with the first node through the interlink; - Active/Active with both nodes processing commands and accessing the backing storage, synchronizing with the first node through the interlink; - Active/Active with second node working as proxy, transfering all commands to the first node for execution through the interlink. Unlike original Copan's implementation, depending on specific hardware, this code uses simple custom TCP-based protocol for interlink. It has no authentication, so it should never be enabled on public interfaces. The code may still need some polishing, but generally it is functional. Relnotes: yes Sponsored by: iXsystems, Inc. 2015-10-05T08:43:47Z Alexander Motin mav@FreeBSD.org 2015-10-05T08:43:47Z urn:sha1:2275420e91151a363fc6e5c527b5ac195cc34ea7 It has nothing to share with too huge ctl.c other then device descriptor, but even that may be counted as design error that may be fixed later. At some point we may even want to have several ioctl ports. 2015-10-05T08:42:43Z Alexander Motin mav@FreeBSD.org 2015-10-05T08:42:43Z urn:sha1:e1c62a9b24de7ca0f1a6205c4e7ffc444d7cfab8 Its idea was to be a simple initiator and execute several commands from kernel level, but FreeBSD never had consumer for that functionality, while its implementation polluted many unrelated places. 2014-07-30T07:18:32Z Alexander Motin mav@FreeBSD.org 2014-07-30T07:18:32Z urn:sha1:20070305ee0ae67a485eb9cb10e9b828dd197834 Add support for VMWare dialect of EXTENDED COPY command, aka VAAI Clone. This allows to clone VMs and move them between LUNs inside one storage host without generating extra network traffic to the initiator and back, and without being limited by network bandwidth. LUNs participating in copy operation should have UNIQUE NAA or EUI IDs set. For LUNs without these IDs VMWare will use traditional copy operations. Beware: the above LUN IDs explicitly set to values non-unique from the VM cluster point of view may cause data corruption if wrong LUN is addressed! Sponsored by: iXsystems, Inc. 2014-05-07T06:20:35Z Edward Tomasz Napierala trasz@FreeBSD.org 2014-05-07T06:20:35Z urn:sha1:904a733f2b8dc3e20c79f689b8a985d0a6132f4d Remove ctl_mem_pool.{c,h}. Sponsored by: The FreeBSD Foundation 2013-09-14T15:29:06Z Edward Tomasz Napierala trasz@FreeBSD.org 2013-09-14T15:29:06Z urn:sha1:009ea47eb2d21856af4529aaaca32cd67748daea Reviewed by: ken (parts) Approved by: re (delphij) Sponsored by: FreeBSD Foundation 2013-04-12T16:25:03Z Edward Tomasz Napierala trasz@FreeBSD.org 2013-04-12T16:25:03Z urn:sha1:8ed98609141e56dd738ea333279beec9f961dca8 and kern.cam.ctl.disable tunable; those were introduced as a workaround to make it possible to boot GENERIC on low memory machines. With ctl(4) being built as a module and automatically loaded by ctladm(8), this makes CTL work out of the box. Reviewed by: ken Sponsored by: FreeBSD Foundation 2013-04-02T13:52:09Z Gleb Smirnoff glebius@FreeBSD.org 2013-04-02T13:52:09Z urn:sha1:b77ea89ea51966c04d851c923bdd660459d2a6ff - Touch options headers to make module buildable. Reviewed by: trasz 2013-04-02T09:42:42Z Edward Tomasz Napierala trasz@FreeBSD.org 2013-04-02T09:42:42Z urn:sha1:325621458da87379e3bc476266e61e8e3f20d396 Reviewed by: ken Sponsored by: FreeBSD Foundation