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44 Commits (4a2dcf7b6b9032400ef8f293b6c3ed59b3097df1)

Author SHA1 Message Date
Vitaliy Filippov 4a2dcf7b6b Update the license to VNPL 1.1 
VNPL 1.1 is slightly reworded to make it clear that proprietary software
interacting with Vitastor and providing some kind of service to end users isn't
a "Proxy Program" if it's not specially designed to be used with Vitastor.

For example, Windows OS running in a virtual machine stored in a Vitastor
cluster clearly isn't.
 2021-02-25 23:55:33 +03:00
Vitaliy Filippov 0471b09b9c Add license notices to all source code files 2020-09-17 23:07:06 +03:00
Vitaliy Filippov 416a80b099 Make blockstore object state a combination of type and workflow 2020-07-04 22:20:32 +03:00
Vitaliy Filippov 592bcd3699 Fix QEMU driver bugs (QEMU and qemu-img now work! hooray!) 2020-06-26 18:25:43 +03:00
Vitaliy Filippov 0f43f6d3f6 Fix crashes, print some stats 
Notably:
- fix the `delete op` inside lambda callback crash (it frees the lambda itself
  which results in use-after-free with g++)
- fix stop_client() reenterability
- fix a bug in the blockstore layer which resulted in always returning version=0
  for zero-length reads
- change error codes for blockstore_stabilize
 2020-03-31 17:55:31 +03:00
Vitaliy Filippov 6982fe1255 Do not block reads by previous unfinished writes 2020-03-13 21:28:49 +03:00
Vitaliy Filippov 0e177c7a2a Fix possible leak in blockstore_read 2020-02-21 19:38:43 +03:00
Vitaliy Filippov b7ccd63104 Return version number from reads 2020-02-12 12:30:50 +03:00
Vitaliy Filippov 43f6cfeb73 Extract alignments to options 2020-01-16 00:54:25 +03:00
Vitaliy Filippov 36d8c8724f Fix sparse reads using bitmap, fix journal replay (we could sometimes lose its end) 2020-01-12 23:38:33 +03:00
Vitaliy Filippov cf819eb442 Implement sparse block bitmap to avoid zero-fill 2020-01-12 02:55:32 +03:00
Vitaliy Filippov b3f2102f33 Add queue stall tracking 2020-01-10 01:23:46 +03:00
Vitaliy Filippov 4677ace4cc Allow zero-length overwrites 2019-12-21 19:04:36 +03:00
Vitaliy Filippov a7e74670a5 Split blockstore implementation and interface header 2019-12-15 14:57:18 +03:00
Vitaliy Filippov 749ab6e2c6 Rename blockstore_operation to blockstore_op_t 2019-12-15 14:57:18 +03:00
Vitaliy Filippov aaea3e1f99 Fix read_fulfill, use vector 2019-12-03 12:09:30 +03:00
Vitaliy Filippov a2ed38fb6b Fix segfault 2019-12-03 02:27:25 +03:00
Vitaliy Filippov 9fa0d3325f Support inmemory journal 2019-11-28 18:06:50 +03:00
Vitaliy Filippov a7dc759f74 Compile fio engine 2019-11-26 01:50:26 +03:00
Vitaliy Filippov 50cf3667fa Track unstable writes 2019-11-25 01:16:34 +03:00
Vitaliy Filippov e40a71b2ce Check result to be equal to iov_len 2019-11-18 02:09:34 +03:00
Vitaliy Filippov c2de733e35 Copy io_uring_prep_* to my_uring_prep_* so they do not clear user_data 2019-11-17 21:39:30 +03:00
Vitaliy Filippov c7d9dc027b Remove extra states as they seem useless 2019-11-15 14:02:37 +03:00
Vitaliy Filippov bc549553e4 Rename dirty_entry.size to len, remove some unneeded methods and fields, read metadata correctly 2019-11-14 01:13:07 +03:00
Vitaliy Filippov 1c6b9778a4 Handle all io_uring events using lambdas 2019-11-13 22:46:42 +03:00
Vitaliy Filippov f892104aed Begin journal flusher 2019-11-12 12:02:11 +03:00
Vitaliy Filippov d2d8d6e7fb Comments about stabilize operation, track unsynced_writes correctly 2019-11-11 02:53:19 +03:00
Vitaliy Filippov ff57dd420e Rename object_db to clean_db 2019-11-10 22:41:40 +03:00
Vitaliy Filippov 69581e6d0c Send STABLE entry to the journal 2019-11-10 22:41:40 +03:00
Vitaliy Filippov e5caffb6ac Allow to read specific versions 2019-11-10 13:26:56 +03:00
Vitaliy Filippov 2d0334f9b9 Remove in_progress_ops 2019-11-10 12:52:37 +03:00
Vitaliy Filippov 24f5d71595 Move handle_event code into _read.cpp, _write.cpp; move sync code into _sync.cpp 2019-11-10 02:27:27 +03:00
Vitaliy Filippov 7456f0f7e2 Remove duplicate code 2019-11-08 19:54:57 +03:00
Vitaliy Filippov 90f081f398 Check for op->wait_for conditions 
It's almost identical to just re-submit... so maybe it was pointless
 2019-11-08 12:08:25 +03:00
Vitaliy Filippov a5f2d8b85e Ack writes 2019-11-08 02:31:07 +03:00
Vitaliy Filippov 40890aeec5 Rename dirty_queue to dirty_db and make it a single std::map 2019-11-08 00:20:10 +03:00
Vitaliy Filippov 5330461029 Move blockstore journal fields to journal_t, implement multiple write buffers for journal sectors 2019-11-07 23:42:24 +03:00
Vitaliy Filippov 84c62840bd Begin write algorithm 2019-11-07 02:24:12 +03:00
Vitaliy Filippov 2f18a3d19e Begin implementation of enqueue/dequeue 2019-11-06 19:27:48 +03:00
Vitaliy Filippov 3f5ad16748 Fix ringloop, implement first version of handle_event for reads 2019-11-05 23:06:06 +03:00
Vitaliy Filippov 82cf0a170e Port everything to ring_loop 2019-11-05 02:43:21 +03:00
Vitaliy Filippov 351366d228 Add ring_loop 2019-11-05 02:12:04 +03:00
Vitaliy Filippov c959948c82 Finish journal reader 2019-11-04 20:18:52 +03:00
Vitaliy Filippov f4705d81d7 Split into multiple files, begin init_loop, adjust read 2019-11-03 02:30:11 +03:00