dnbd3.git/src/server/integrity.c, branch isfant Distributed Network Block Device 3 --rewrite for Kernel 3.x https://git.openslx.org/dnbd3.git/atom/src/server/integrity.c?h=isfant 2024-07-05T08:48:29+00:00 [SERVER] Verify checksums of all images on SIGUSR1 2024-07-05T08:48:29+00:00 Simon Rettberg 2024-07-05T08:48:29+00:00 urn:sha1:ae91f373cf5ce045fe65df022fae151fe915c6c3 [SERVER] integrity: Add comments, line wraps, add check for full scan 2024-07-04T14:21:17+00:00 Simon Rettberg 2024-07-04T14:21:17+00:00 urn:sha1:1b3068f57a7c23e5ab86744afc2690140245698f [SERVER] Remove "working" flag, introduce fine-grained flags 2020-03-03T11:21:01+00:00 Simon Rettberg 2020-03-03T11:21:01+00:00 urn:sha1:26c1ad7af0f5749c5343a5823b9c8cece885ce84 Tracking the "working" state of images using one boolean is insufficient regarding the different ways in which providing an image can fail. Introduce separate flags for different conditions, like "file not readable", "file not writable", "no uplink server available", "file content has changed". [SERVER] Fix checking images without cache map 2019-10-29T16:55:20+00:00 Simon Rettberg 2019-10-29T16:55:20+00:00 urn:sha1:3d0c89fccf14599d156696d74224a4fbe0787777 [*] Fix/simplify checks for linux 2019-09-17T12:56:03+00:00 Simon Rettberg 2019-09-17T12:56:03+00:00 urn:sha1:53fbcc89f027992e29c96086dd32eb624e181eac [SERVER] Make integrity checks on startup async 2019-09-10T15:49:05+00:00 Simon Rettberg 2019-09-10T15:49:05+00:00 urn:sha1:fdcbdcac2e721d72136794bdc45c63d71799dcd5 [SERVER] integrity checker: Improve flushing logic 2019-09-05T14:52:31+00:00 Simon Rettberg 2019-09-05T14:52:31+00:00 urn:sha1:5765ce49f5e1e26505fd6b162db73a732603d1a8 [SERVER] Use weakref for cache maps 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. [SERVER] Speed up shutdown of integrity checker 2019-08-28T20:14:34+00:00 Simon Rettberg 2019-08-28T20:14:34+00:00 urn:sha1:0fb5ec7152c79d10711139158533f96204755788 [SERVER] Make signal handling more POSIX 2019-08-28T11:07:13+00:00 Simon Rettberg 2019-08-28T11:07:13+00:00 urn:sha1:ac1bf45ebdd630fbc9ad2c1fa3c0ea99f5206799 According to POSIX, a signal sent to a PID can be delivered to an arbitrary thread of that process that hasn't the signal blocked. This seens to never happen on Linux, but would mess things up since the code expected the main signal handler to only be executed by the main thread. This should now be fixed by examining the destination PID of the signal as well as the ID of the thread currently running the signal handler. If we notice the signal wasn't sent by our own PID and the handler is not currently run by the main thread, we re-send the signal to the main thread. Otherwise, if the signal was sent by our own PID but the handler is not run in the main thread, do nothing. This way we can use pthread_kill() to wake up threads that might be stuck in a blocking syscall when it's time to shut down.