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Allow to overwrite incomplete objects or parts of objects to recover them

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This commit is contained in:
Vitaliy Filippov
2020-10-24 02:14:41 +03:00
parent 660c2412fb
commit e8ac08be14
4 changed files with 139 additions and 4 deletions
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osd_rmw.cpp
+17 -3
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@@ -208,7 +208,7 @@ void* calc_rmw(void *request_buf, osd_rmw_stripe_t *stripes, uint64_t *read_osd_
{
pg_cursize = 0;
// Object is degraded/misplaced and will be moved to <write_osd_set>
for (int role = 0; role < pg_size; role++)
for (int role = 0; role < pg_minsize; role++)
{
if (write_osd_set[role] != read_osd_set[role] && write_osd_set[role] != 0)
{
@@ -228,6 +228,20 @@ void* calc_rmw(void *request_buf, osd_rmw_stripe_t *stripes, uint64_t *read_osd_
pg_cursize++;
}
}
for (int role = pg_minsize; role < pg_size; role++)
{
if (write_osd_set[role] != read_osd_set[role] && write_osd_set[role] != 0)
{
for (int r2 = 0; r2 < pg_minsize; r2++)
{
cover_read(0, chunk_size, stripes[r2]);
}
}
if (read_osd_set[role] != 0)
{
pg_cursize++;
}
}
}
if (pg_cursize < pg_size)
{
@@ -251,8 +265,8 @@ void* calc_rmw(void *request_buf, osd_rmw_stripe_t *stripes, uint64_t *read_osd_
}
if (found < pg_minsize)
{
// FIXME Object is incomplete - refuse partial overwrite
assert(0);
// Object is incomplete - refuse partial overwrite
return NULL;
}
}
}