Distributed Network Block Device 3 --rewrite for Kernel 3.x https://git.openslx.org/dnbd3.git/atom/src/server/image.h?h=isfant 2024-07-05T08:48:29+00:00 2024-07-05T08:48:29+00:00 Simon Rettberg 2024-07-05T08:48:29+00:00 urn:sha1:ae91f373cf5ce045fe65df022fae151fe915c6c3 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. 2020-03-13T15:03:29+00:00 Simon Rettberg 2020-03-13T15:03:29+00:00 urn:sha1:290d3478f245bb7d2112bb781286a9fbae42b983 - Now uses linked lists instead of huge array - Does prefetch data on client requests - Can have multiple replication requests in-flight 2020-03-04T16:49:50+00:00 Simon Rettberg 2020-03-04T16:49:50+00:00 urn:sha1:930b65f26cb39687a113641f56711a2d58f886ca Cache maps will now be saved periodically, but only if either they have a "dirty" bit set, which happens if any bits in the map get cleared again (due to corruption), or if new data has been replicated from an uplink server. This either means at least one byte received and 5 minutes have passed, or at least 500MB have been downloaded. The timer currently runs every 20 seconds. 2019-10-29T16:55:20+00:00 Simon Rettberg 2019-10-29T16:55:20+00:00 urn:sha1:3d0c89fccf14599d156696d74224a4fbe0787777 2019-09-06T15:32:58+00:00 Simon Rettberg 2019-09-06T15:32:58+00:00 urn:sha1:701e5a967fd6bc97644f39e6fea3714f49a90291 2019-08-29T12:49:18+00:00 Simon Rettberg 2019-08-29T12:49:18+00:00 urn:sha1:88695877f085af475a6ca8a01c2fbb08eb5b15da Gets rid of a bunch of locking, especially the hot path in net.c where clients are requesting data. Many clients unsing the same incomplete image previously created a bottleneck here. 2018-07-04T12:39:43+00:00 Simon Rettberg 2018-07-04T12:39:43+00:00 urn:sha1:053ca3b9a9601467d5ce30c56c3cea078c897f57 The cacheFd is now moved to the uplink data structure and will only be handled by the uplink thread. The integrity checker now supports checking all blocks of an image. This will be triggered automatically whenever a check for a single block failed. Also, if a crc check on startup fails, the image won't be discarded anymore, but rather a full check will be initiated. Furthermore, when calling image_updateCacheMap() on an image that was previously complete, the cache map will now be re-initialized, and a new uplink connection created. 2018-06-25T13:57:50+00:00 Simon Rettberg 2018-06-25T13:57:50+00:00 urn:sha1:b4c1fe882758c077fc9bd48599653b147dae3c8a In scenarios where the proxy is using an NFS server as storage (for whatever crazy reason) or when the cacheFd goes bad through e.g. a switchroot, try to re-open it instead of just disabling caching forever. 2018-06-13T14:14:39+00:00 Simon Rettberg 2018-06-13T14:14:39+00:00 urn:sha1:6c87083685744b6aa899de50128ab74ef8f89982