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Diffstat (limited to 'innobase/fsp')
-rw-r--r--innobase/fsp/fsp0fsp.c22
1 files changed, 20 insertions, 2 deletions
diff --git a/innobase/fsp/fsp0fsp.c b/innobase/fsp/fsp0fsp.c
index 08608731f2e..32e7f5bcad7 100644
--- a/innobase/fsp/fsp0fsp.c
+++ b/innobase/fsp/fsp0fsp.c
@@ -2608,6 +2608,7 @@ fseg_free_page_low(
ulint not_full_n_used;
ulint state;
ulint i;
+ char errbuf[200];
ut_ad(seg_inode && mtr);
ut_ad(mach_read_from_4(seg_inode + FSEG_MAGIC_N) ==
@@ -2621,8 +2622,25 @@ fseg_free_page_low(
descr = xdes_get_descriptor(space, page, mtr);
ut_a(descr);
- ut_a(xdes_get_bit(descr, XDES_FREE_BIT, page % FSP_EXTENT_SIZE, mtr)
- == FALSE);
+ if (xdes_get_bit(descr, XDES_FREE_BIT, page % FSP_EXTENT_SIZE, mtr)
+ != FALSE) {
+ ut_sprintf_buf(errbuf, descr, 40);
+ fprintf(stderr,
+"InnoDB: Dump of the tablespace extent descriptor: %s\n", errbuf);
+
+ fprintf(stderr,
+"InnoDB: Serious error! InnoDB is trying to free page %lu\n",
+"InnoDB: though it is already marked as free in the tablespace!\n"
+"InnoDB: The tablespace free space info is corrupt.\n"
+"InnoDB: You may need to dump your InnoDB tables and recreate the whole\n"
+"InnoDB: database!\n", page);
+
+ fprintf(stderr,
+"InnoDB: If the InnoDB recovery crashes here, see section 6.1\n"
+"InnoDB: of http://www.innodb.com/ibman.html about forcing recovery.\n");
+ ut_a(0);
+ }
+
state = xdes_get_state(descr, mtr);
if (state != XDES_FSEG) {