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buf_page_io_complete(): Write to the error log if the page number or the

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space id on the disk do not match those in the memory.  Also write to
the error log if a page was read from the doublewrite buffer.  The
doublewrite buffer should be only read by the lower-level function fil_io()
at database startup.
This commit is contained in:
marko
2006-05-05 15:19:32 +00:00
parent 0677a1ec8e
commit d35c4375c3
1 changed files with 27 additions and 10 deletions
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37
buf/buf0buf.c
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@@ -1854,7 +1854,6 @@ buf_page_io_complete(
buf_block_t* block) /* in: pointer to the block in question */
{
ulint io_type;
ulint read_page_no;
ut_ad(block);
@@ -1864,18 +1863,36 @@ buf_page_io_complete(
if (io_type == BUF_IO_READ) {
/* If this page is not uninitialized and not in the
doublewrite buffer, then the page number should be the
same as in block */
read_page_no = mach_read_from_4((block->frame)
doublewrite buffer, then the page number and space id
should be the same as in block. */
ulint read_page_no = mach_read_from_4((block->frame)
+ FIL_PAGE_OFFSET);
if (read_page_no != 0
&& !trx_doublewrite_page_inside(read_page_no)
&& read_page_no != block->offset) {
ulint read_space_id = mach_read_from_4((block->frame)
+ FIL_PAGE_ARCH_LOG_NO_OR_SPACE_ID);
if (!block->space && trx_doublewrite_page_inside(
block->offset)) {
ut_print_timestamp(stderr);
fprintf(stderr,
"InnoDB: Error: page n:o stored in the page read in is %lu, should be %lu!\n",
(ulong) read_page_no, (ulong) block->offset);
" InnoDB: Error: reading page %lu\n"
"InnoDB: which is in the doublewrite buffer!\n",
(ulong) block->offset);
} else if (!read_space_id && !read_page_no) {
/* This is likely an uninitialized page. */
} else if ((block->space && block->space != read_space_id)
|| block->offset != read_page_no) {
/* We did not compare space_id to read_space_id
if block->space == 0, because the field on the
page may contain garbage in MySQL < 4.1.1,
which only supported block->space == 0. */
ut_print_timestamp(stderr);
fprintf(stderr,
" InnoDB: Error: space id and page n:o stored in the page\n"
"InnoDB: read in are %lu:%lu, should be %lu:%lu!\n",
(ulong) read_space_id, (ulong) read_page_no,
(ulong) block->space, (ulong) block->offset);
}
/* From version 3.23.38 up we store the page checksum
to the 4 first bytes of the page end lsn field */