Vitaliy Filippov
4a2dcf7b6b
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.
50 lines
1.6 KiB
C
50 lines
1.6 KiB
C
// Copyright (c) Vitaliy Filippov, 2019+
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// License: VNPL-1.1 (see README.md for details)
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#pragma once
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#include <stdint.h>
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#include "object_id.h"
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#include "osd_id.h"
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#ifndef MEM_ALIGNMENT
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#define MEM_ALIGNMENT 512
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#endif
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struct buf_len_t
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{
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void *buf;
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uint64_t len;
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};
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struct osd_rmw_stripe_t
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{
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void *read_buf, *write_buf;
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uint32_t req_start, req_end;
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uint32_t read_start, read_end;
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uint32_t write_start, write_end;
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bool missing;
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};
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// Here pg_minsize is the number of data chunks, not the minimum number of alive OSDs for the PG to operate
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void split_stripes(uint64_t pg_minsize, uint32_t bs_block_size, uint32_t start, uint32_t len, osd_rmw_stripe_t *stripes);
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void reconstruct_stripes_xor(osd_rmw_stripe_t *stripes, int pg_size);
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int extend_missing_stripes(osd_rmw_stripe_t *stripes, osd_num_t *osd_set, int pg_minsize, int pg_size);
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void* alloc_read_buffer(osd_rmw_stripe_t *stripes, int read_pg_size, uint64_t add_size);
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void* calc_rmw(void *request_buf, osd_rmw_stripe_t *stripes, uint64_t *read_osd_set,
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uint64_t pg_size, uint64_t pg_minsize, uint64_t pg_cursize, uint64_t *write_osd_set, uint64_t chunk_size);
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void calc_rmw_parity_xor(osd_rmw_stripe_t *stripes, int pg_size, uint64_t *read_osd_set, uint64_t *write_osd_set, uint32_t chunk_size);
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void use_jerasure(int pg_size, int pg_minsize, bool use);
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void reconstruct_stripes_jerasure(osd_rmw_stripe_t *stripes, int pg_size, int pg_minsize);
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void calc_rmw_parity_jerasure(osd_rmw_stripe_t *stripes, int pg_size, int pg_minsize,
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uint64_t *read_osd_set, uint64_t *write_osd_set, uint32_t chunk_size);
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