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Fix stripe reconstruction in recovery, only write modified object parts

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This commit is contained in:
Vitaliy Filippov
2020-03-28 13:58:42 +03:00
parent c0a22d825d
commit 1b30120918
3 changed files with 82 additions and 41 deletions
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osd_rmw.cpp
+11 -6
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@@ -321,13 +321,8 @@ static void xor_multiple_buffers(buf_len_t *xor1, int n1, buf_len_t *xor2, int n
}
}
void calc_rmw_parity(osd_rmw_stripe_t *stripes, int pg_size)
void reconstruct_stripes(osd_rmw_stripe_t *stripes, int pg_size)
{
if (stripes[pg_size-1].missing)
{
// Parity OSD is unavailable
return;
}
for (int role = 0; role < pg_size; role++)
{
if (stripes[role].read_end != 0 && stripes[role].missing)
@@ -337,6 +332,16 @@ void calc_rmw_parity(osd_rmw_stripe_t *stripes, int pg_size)
break;
}
}
}
void calc_rmw_parity(osd_rmw_stripe_t *stripes, int pg_size)
{
if (stripes[pg_size-1].missing)
{
// Parity OSD is unavailable
return;
}
reconstruct_stripes(stripes, pg_size);
// Calculate new parity (EC k+1)
int parity = pg_size-1, prev = -2;
auto wr_end = stripes[parity].write_end;