forked from vitalif/vitastor
Rename osd_read_stripe_t to osd_rmw_stripe_t
parent
c71b67f2f7
commit
88e56a564f
2
osd.h
2
osd.h
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@ -157,7 +157,7 @@ struct osd_client_t
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};
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struct osd_primary_read_t;
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struct osd_read_stripe_t;
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struct osd_rmw_stripe_t;
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class osd_t
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{
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@ -17,7 +17,7 @@ struct osd_primary_op_data_t
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uint64_t target_ver;
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int n_subops = 0, done = 0, errors = 0;
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int degraded = 0, pg_size, pg_minsize;
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osd_read_stripe_t *stripes;
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osd_rmw_stripe_t *stripes;
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osd_op_t *subops = NULL;
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void *rmw_buf = NULL;
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@ -63,11 +63,11 @@ bool osd_t::prepare_primary_rw(osd_op_t *cur_op)
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return false;
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}
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osd_primary_op_data_t *op_data = (osd_primary_op_data_t*)calloc(
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sizeof(osd_primary_op_data_t) + sizeof(osd_read_stripe_t) * pgs[pg_num].pg_size, 1
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sizeof(osd_primary_op_data_t) + sizeof(osd_rmw_stripe_t) * pgs[pg_num].pg_size, 1
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);
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op_data->pg_num = pg_num;
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op_data->oid = oid;
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op_data->stripes = ((osd_read_stripe_t*)(op_data+1));
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op_data->stripes = ((osd_rmw_stripe_t*)(op_data+1));
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cur_op->op_data = op_data;
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split_stripes(pgs[pg_num].pg_minsize, bs_block_size, (uint32_t)(cur_op->req.rw.offset - oid.stripe), cur_op->req.rw.len, op_data->stripes);
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return true;
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@ -140,7 +140,7 @@ void osd_t::handle_primary_read_subop(osd_op_t *cur_op, int ok)
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{
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// Reconstruct missing stripes
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// FIXME: Always EC(k+1) by now. Add different coding schemes
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osd_read_stripe_t *stripes = op_data->stripes;
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osd_rmw_stripe_t *stripes = op_data->stripes;
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for (int role = 0; role < op_data->pg_minsize; role++)
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{
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if (stripes[role].read_end != 0 && stripes[role].missing)
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@ -165,7 +165,7 @@ void osd_t::handle_primary_read_subop(osd_op_t *cur_op, int ok)
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void osd_t::submit_read_subops(int read_pg_size, const uint64_t* osd_set, osd_op_t *cur_op)
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{
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osd_primary_op_data_t *op_data = (osd_primary_op_data_t*)cur_op->op_data;
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osd_read_stripe_t *stripes = op_data->stripes;
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osd_rmw_stripe_t *stripes = op_data->stripes;
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// Allocate subops
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int n_subops = 0, force_read = -1;
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for (int role = 0; role < read_pg_size; role++)
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18
osd_rmw.cpp
18
osd_rmw.cpp
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@ -3,7 +3,7 @@
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#include "xor.h"
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#include "osd_rmw.h"
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static inline void extend_read(uint32_t start, uint32_t end, osd_read_stripe_t & stripe)
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static inline void extend_read(uint32_t start, uint32_t end, osd_rmw_stripe_t & stripe)
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{
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if (stripe.read_end == 0)
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{
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@ -19,7 +19,7 @@ static inline void extend_read(uint32_t start, uint32_t end, osd_read_stripe_t &
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}
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}
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static inline void cover_read(uint32_t start, uint32_t end, osd_read_stripe_t & stripe)
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static inline void cover_read(uint32_t start, uint32_t end, osd_rmw_stripe_t & stripe)
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{
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// Subtract <to> write request from <from> request
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if (start >= stripe.req_start &&
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@ -53,7 +53,7 @@ static inline void cover_read(uint32_t start, uint32_t end, osd_read_stripe_t &
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}
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}
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void split_stripes(uint64_t pg_minsize, uint32_t bs_block_size, uint32_t start, uint32_t end, osd_read_stripe_t *stripes)
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void split_stripes(uint64_t pg_minsize, uint32_t bs_block_size, uint32_t start, uint32_t end, osd_rmw_stripe_t *stripes)
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{
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end = start+end;
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for (int role = 0; role < pg_minsize; role++)
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@ -66,7 +66,7 @@ void split_stripes(uint64_t pg_minsize, uint32_t bs_block_size, uint32_t start,
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}
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}
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void reconstruct_stripe(osd_read_stripe_t *stripes, int pg_size, int role)
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void reconstruct_stripe(osd_rmw_stripe_t *stripes, int pg_size, int role)
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{
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int prev = -2;
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for (int other = 0; other < pg_size; other++)
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@ -98,7 +98,7 @@ void reconstruct_stripe(osd_read_stripe_t *stripes, int pg_size, int role)
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}
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}
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int extend_missing_stripes(osd_read_stripe_t *stripes, osd_num_t *osd_set, int minsize, int size)
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int extend_missing_stripes(osd_rmw_stripe_t *stripes, osd_num_t *osd_set, int minsize, int size)
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{
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for (int role = 0; role < minsize; role++)
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{
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@ -131,7 +131,7 @@ int extend_missing_stripes(osd_read_stripe_t *stripes, osd_num_t *osd_set, int m
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return 0;
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}
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void* alloc_read_buffer(osd_read_stripe_t *stripes, int read_pg_size, uint64_t add_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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{
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// Calculate buffer size
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uint64_t buf_size = add_size;
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@ -156,7 +156,7 @@ void* alloc_read_buffer(osd_read_stripe_t *stripes, int read_pg_size, uint64_t a
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return buf;
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}
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void* calc_rmw_reads(void *write_buf, osd_read_stripe_t *stripes, uint64_t *osd_set, uint64_t pg_size, uint64_t pg_minsize, uint64_t pg_cursize)
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void* calc_rmw_reads(void *write_buf, osd_rmw_stripe_t *stripes, uint64_t *osd_set, uint64_t pg_size, uint64_t pg_minsize, uint64_t pg_cursize)
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{
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// Generic parity modification (read-modify-write) algorithm
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// Reconstruct -> Read -> Calc parity -> Write
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@ -238,7 +238,7 @@ void* calc_rmw_reads(void *write_buf, osd_read_stripe_t *stripes, uint64_t *osd_
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return rmw_buf;
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}
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static void get_old_new_buffers(osd_read_stripe_t & stripe, uint32_t wr_start, uint32_t wr_end, buf_len_t *bufs, int & nbufs)
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static void get_old_new_buffers(osd_rmw_stripe_t & stripe, uint32_t wr_start, uint32_t wr_end, buf_len_t *bufs, int & nbufs)
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{
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uint32_t ns = 0, ne = 0, os = 0, oe = 0;
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if (stripe.req_end > wr_start &&
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@ -319,7 +319,7 @@ static void xor_multiple_buffers(buf_len_t *xor1, int n1, buf_len_t *xor2, int n
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}
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}
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void calc_rmw_parity(osd_read_stripe_t *stripes, int pg_size)
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void calc_rmw_parity(osd_rmw_stripe_t *stripes, int pg_size)
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{
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if (stripes[pg_size-1].missing)
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{
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14
osd_rmw.h
14
osd_rmw.h
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@ -14,7 +14,7 @@ struct buf_len_t
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uint64_t len;
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};
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struct osd_read_stripe_t
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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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@ -23,14 +23,14 @@ struct osd_read_stripe_t
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bool missing;
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};
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void split_stripes(uint64_t pg_minsize, uint32_t bs_block_size, uint32_t start, uint32_t len, osd_read_stripe_t *stripes);
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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_stripe(osd_read_stripe_t *stripes, int pg_size, int role);
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void reconstruct_stripe(osd_rmw_stripe_t *stripes, int pg_size, int role);
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int extend_missing_stripes(osd_read_stripe_t *stripes, osd_num_t *osd_set, int minsize, int size);
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int extend_missing_stripes(osd_rmw_stripe_t *stripes, osd_num_t *osd_set, int minsize, int size);
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void* alloc_read_buffer(osd_read_stripe_t *stripes, int read_pg_size, uint64_t add_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_reads(void *write_buf, osd_read_stripe_t *stripes, uint64_t *osd_set, uint64_t pg_size, uint64_t pg_minsize, uint64_t pg_cursize);
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void* calc_rmw_reads(void *write_buf, osd_rmw_stripe_t *stripes, uint64_t *osd_set, uint64_t pg_size, uint64_t pg_minsize, uint64_t pg_cursize);
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void calc_rmw_parity(osd_read_stripe_t *stripes, int pg_size);
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void calc_rmw_parity(osd_rmw_stripe_t *stripes, int pg_size);
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@ -12,7 +12,7 @@
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int main(int narg, char *args[])
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{
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osd_num_t osd_set[3] = { 1, 0, 3 };
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osd_read_stripe_t stripes[3] = { 0 };
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osd_rmw_stripe_t stripes[3] = { 0 };
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// Test 1
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split_stripes(2, 128*1024, 128*1024-4096, 8192, stripes);
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assert(stripes[0].req_start == 128*1024-4096 && stripes[0].req_end == 128*1024);
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