Distributed Network Block Device 3 --rewrite for Kernel 3.x https://git.openslx.org/dnbd3.git/atom/src/server/uplink.c?h=isfant 2021-05-11T07:43:37+00:00 2021-05-11T07:43:37+00:00 Simon Rettberg 2021-05-11T07:43:37+00:00 urn:sha1:609ca9001343b90338d9e61d63ffc78b5b99a63c Any request from a client being relayed to an uplink server will have its size extended to this value. It will also be applied to background replication requests, if the BGR mode is FULL. As request coalescing is currently very primitive, this setting should usually be left diabled, and bgrWindowSize used instead, if appropriate. If you enable this, set it to something large (1M+), or it might have adverse effects. 2021-04-20T13:49:48+00:00 Simon Rettberg 2021-04-20T13:49:48+00:00 urn:sha1:27784cd0f009f1750e9ad213b1c0910b98ffdb44 2021-04-14T12:55:26+00:00 Simon Rettberg 2021-04-14T12:55:26+00:00 urn:sha1:8b303a6c68079a3db781b2a361707719406279e3 Incoming requests from clients might actually be prefetch jobs from another downstream proxy. Don't do prefetching for those, as this would cascade upwars in the proxy chain (prefetch for a prefetch of a prefetch) Incoming requests might also be background replication. Don't relay those if we're not configured for background replication as well. 2021-04-14T11:17:59+00:00 Simon Rettberg 2021-04-13T14:41:26+00:00 urn:sha1:0be00336f97a7ef3590ee803d4ad19e305aa1583 There is a race condition where we process the next request from the same client faster than the OS will schedule the async prefetch job, rendering it a NOOP in the best case (request ranges match) or fetching redundant data from the upstream server (prefetch range is larger than actual request by client). Make prefetching synchronous to prevent this race condition. 2020-11-23T08:15:45+00:00 Simon Rettberg 2020-11-23T08:15:45+00:00 urn:sha1:29d1388cb0f708fa32834a05b56039e56cb72e1e 2020-10-16T15:15:49+00:00 Manuel Bentele 2020-10-16T15:15:49+00:00 urn:sha1:969496f15e1e0359e26c2c6e995ad4ef82720f86 This change restructures the source code directories, separates shared form non-shared application code and adds CMake dependencies. These dependencies allow the tracking of changes and trigger a rebuild of those build targets where changed files are involved. WARNING: Note that the support of the DNBD3_SERVER_AFL build option is not supported yet. Thus, the option should be never turned on. 2020-07-28T15:49:17+00:00 Simon Rettberg 2020-07-28T15:49:17+00:00 urn:sha1:e4dec3562e6cab27e1a3f40165e4c0d9d0bf05c9 Still needs some cleanup and optimizations, variable naming sucks, comments, etc. 2020-06-10T14:01:36+00:00 Simon Rettberg 2020-06-10T14:01:36+00:00 urn:sha1:c61f65ebd977d0fa4f1f486458655242f3aeb3e5 2020-03-20T11:08:10+00:00 Simon Rettberg 2020-03-20T11:08:10+00:00 urn:sha1:a9f5b836d9fddb3e1851c5b0a77c566b0f267ead 2020-03-19T10:26:12+00:00 Simon Rettberg 2020-03-19T10:26:12+00:00 urn:sha1:ba617b55eb606ab487f154b124750e121518d5e5