Distributed Network Block Device 3 --rewrite for Kernel 3.x https://git.openslx.org/dnbd3.git/atom/src/config.h?h=isfant 2020-10-16T15:15:49+00:00 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. 2017-10-17T10:08:55+00:00 Simon Rettberg 2017-10-17T10:08:55+00:00 urn:sha1:102705470366b871109d2c3bf182c151ab71eb01 We steal 8 bits from the request offset to count hops when requests get relayed by proxies. This still leaves plenty of bits for the offset (56 bits, supporting images of up to 72 petabytes). This is used to detect proxy cycles. The algorithm is not perfect but should prevent endless relays of the same request. This is backwards compatible to old clients and servers, as the server only ever sets the hopcount in relayed requests if the upstream server is using protocol version 3 or newer, and clients are automatically upwards compatible as there is practically no image larger than 74PB, so the newly introduced hop count field is always 0 even in requests from old clients. 2017-09-02T14:37:21+00:00 Simon Rettberg 2017-09-02T14:37:21+00:00 urn:sha1:18aea50ca77d8a5931ba4fdb0ad507e12c0f6f7c 2017-08-26T14:24:07+00:00 Simon Rettberg 2017-08-26T14:24:07+00:00 urn:sha1:897615c6e926eefe2ef78dc7cc00fe633d2ab332 2016-07-19T10:04:33+00:00 konrad 2016-07-19T10:04:33+00:00 urn:sha1:6ddb5d6c2537bc904decf4ad769250fa27a8073e 2016-01-11T10:59:03+00:00 Simon Rettberg 2016-01-11T10:59:03+00:00 urn:sha1:aedf8c534195772f60e7c6409ae045fa20415aef - Disable panic timeout that reports errors to block layer by default - Get rid of "is_server" used by old proxy mode, introduce "honor_server_alts" that just controls whether we use alts provided by the server - Allow switching servers when we only have 3 RTT measurements - If using alts provided by server, don't ignore those that come from other servers than the initial one 2015-12-15T16:45:44+00:00 Simon Rettberg 2015-12-15T16:45:44+00:00 urn:sha1:72104f2e83fa724f9667c876dca17a2c5ee9b2a2 Now that we can automatically load unknown images from disk on request, it makes sense to remove non-working images from the image list. On future requests, we will look for them on disk again, which is nice in case of temporary storage hickups. Also, some more ore less related locking has been refined (loading images, replicating images) 2015-11-30T16:31:06+00:00 Simon Rettberg 2015-11-30T16:31:06+00:00 urn:sha1:1d0211719bc6ad76f924f8c08e1a28f0509cd4fd 2015-11-24T11:30:46+00:00 Simon Rettberg 2015-11-24T11:30:46+00:00 urn:sha1:7b51c287a60d2f202fb131eeed9d1bf19b65a7a3 2015-01-27T18:39:04+00:00 Simon Rettberg 2015-01-27T18:39:04+00:00 urn:sha1:2b722b756864b14b6299a8b24067a37e12aabfc4