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ceph: fail gracefully on corrupt osdmap (bad pg_temp mapping)

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Return an error and report a corrupt map instead of crying BUG().

Signed-off-by: Sage Weil <sage@newdream.net>
This commit is contained in:
Sage Weil 2009-10-08 22:22:37 -07:00
parent 0ba6478df7
commit 991abb6ecf
1 changed files with 10 additions and 5 deletions
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13
fs/ceph/osdmap.c
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@ -366,7 +366,7 @@ static int osdmap_set_max_osd(struct ceph_osdmap *map, int max)
/*
* Insert a new pg_temp mapping
*/
static void __insert_pg_mapping(struct ceph_pg_mapping *new,
static int __insert_pg_mapping(struct ceph_pg_mapping *new,
struct rb_root *root)
{
struct rb_node **p = &root->rb_node;
@ -381,11 +381,12 @@ static void __insert_pg_mapping(struct ceph_pg_mapping *new,
else if (new->pgid > pg->pgid)
p = &(*p)->rb_right;
else
BUG();
return -EEXIST;
}
rb_link_node(&new->node, parent, p);
rb_insert_color(&new->node, root);
return 0;
}
/*
@ -481,7 +482,9 @@ struct ceph_osdmap *osdmap_decode(void **p, void *end)
for (j = 0; j < n; j++)
ceph_decode_32(p, pg->osds[j]);
__insert_pg_mapping(pg, &map->pg_temp);
err = __insert_pg_mapping(pg, &map->pg_temp);
if (err)
goto bad;
dout(" added pg_temp %llx len %d\n", pgid, len);
}
@ -681,7 +684,9 @@ struct ceph_osdmap *osdmap_apply_incremental(void **p, void *end,
pg->len = pglen;
for (j = 0; j < len; j++)
ceph_decode_32(p, pg->osds[j]);
__insert_pg_mapping(pg, &map->pg_temp);
err = __insert_pg_mapping(pg, &map->pg_temp);
if (err)
goto bad;
dout(" added pg_temp %llx len %d\n", pgid, pglen);
}
}