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Fix ISA-L version EC recovery with first missing data chunk not being read 

(Yes, all EC n + k with k >= 2 users should upgrade as soon as possible)
zerocopy-tcp-send
Vitaliy Filippov 2023-11-04 01:20:37 +03:00
parent becf14a705
commit 30dff8893f
1 changed files with 4 additions and 3 deletions
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7
src/osd_rmw.cpp
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@ -239,8 +239,9 @@ static void* get_jerasure_decoding_matrix(osd_rmw_stripe_t *stripes, int pg_size
{
int edd = 0;
int erased[pg_size];
// we should distinguish stripes which are not at all and missing stripes
for (int i = 0; i < pg_size; i++)
erased[i] = (stripes[i].read_end == 0 || stripes[i].missing ? 1 : 0);
erased[i] = (stripes[i].read_end == 0 ? 2 : (stripes[i].missing ? 1 : 0));
for (int i = 0; i < pg_minsize; i++)
if (stripes[i].read_end != 0 && stripes[i].missing)
edd++;
@ -253,7 +254,7 @@ static void* get_jerasure_decoding_matrix(osd_rmw_stripe_t *stripes, int pg_size
#ifdef WITH_ISAL
int smrow = 0;
uint8_t *submatrix = (uint8_t*)malloc_or_die(pg_minsize*pg_minsize*2);
for (int i = 0; i < pg_size; i++)
for (int i = 0; i < pg_size && smrow < pg_minsize; i++)
{
if (!erased[i])
{
@ -279,7 +280,7 @@ static void* get_jerasure_decoding_matrix(osd_rmw_stripe_t *stripes, int pg_size
smrow = 0;
for (int i = 0; i < pg_minsize; i++)
{
if (erased[i])
if (erased[i] == 1)
{
memcpy(submatrix + pg_minsize*smrow, submatrix + (pg_minsize+i)*pg_minsize, pg_minsize);
smrow++;