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nexedi
MariaDB
Commits
191ceaff
Commit
191ceaff
authored
Dec 16, 2007
by
unknown
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Plain Diff
postmerge changes.
parent
18d408a9
Changes
1
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1 changed file
with
74 additions
and
53 deletions
+74
-53
storage/maria/ma_loghandler.c
storage/maria/ma_loghandler.c
+74
-53
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storage/maria/ma_loghandler.c
View file @
191ceaff
...
...
@@ -2266,7 +2266,7 @@ static my_bool translog_buffer_flush(struct st_translog_buffer *buffer)
Send page by page in the pagecache what we are going to write on the
disk
*/
file
.
file
=
buffer
->
file
;
file
=
buffer
->
file
;
for
(
i
=
0
,
pg
=
LSN_OFFSET
(
buffer
->
offset
)
/
TRANSLOG_PAGE_SIZE
;
i
<
buffer
->
size
;
i
+=
TRANSLOG_PAGE_SIZE
,
pg
++
)
...
...
@@ -2407,6 +2407,68 @@ translog_dummy_callback(__attribute__((unused)) uchar *page,
}
/**
@brief Checks and removes sector protection.
@param page reference on the page content.
@param file transaction log descriptor.
@retvat 0 OK
@retval 1 Error
*/
static
my_bool
translog_check_sector_protection
(
uchar
*
page
,
TRANSLOG_FILE
*
file
)
{
uint
i
,
offset
;
uchar
*
table
=
page
+
page_overhead
[
page
[
TRANSLOG_PAGE_FLAGS
]]
-
TRANSLOG_PAGE_SIZE
/
DISK_DRIVE_SECTOR_SIZE
;
;
uint8
current
=
table
[
0
];
DBUG_ENTER
(
"translog_check_sector_protection"
);
for
(
i
=
1
,
offset
=
DISK_DRIVE_SECTOR_SIZE
;
i
<
TRANSLOG_PAGE_SIZE
/
DISK_DRIVE_SECTOR_SIZE
;
i
++
,
offset
+=
DISK_DRIVE_SECTOR_SIZE
)
{
/*
TODO: add chunk counting for "suspecting" sectors (difference is
more than 1-2), if difference more then present chunks then it is
the problem.
*/
uint8
test
=
page
[
offset
];
DBUG_PRINT
(
"info"
,
(
"sector: #%u offset: %u current: %lx "
"read: 0x%x stored: 0x%x%x"
,
i
,
offset
,
(
ulong
)
current
,
(
uint
)
uint2korr
(
page
+
offset
),
(
uint
)
table
[
i
],
(
uint
)
table
[
i
+
1
]));
/*
3 is minimal possible record length. So we can have "distance"
between 2 sectors value more then DISK_DRIVE_SECTOR_SIZE / 3
only if it is old value, i.e. the sector was not written.
*/
if
(((
test
<
current
)
&&
(
0xFFL
-
current
+
test
>
DISK_DRIVE_SECTOR_SIZE
/
3
))
||
((
test
>=
current
)
&&
(
test
-
current
>
DISK_DRIVE_SECTOR_SIZE
/
3
)))
{
if
(
translog_recover_page_up_to_sector
(
page
,
offset
))
DBUG_RETURN
(
1
);
file
->
was_recovered
=
1
;
DBUG_RETURN
(
0
);
}
/* Restore value on the page */
page
[
offset
]
=
table
[
i
];
current
=
test
;
DBUG_PRINT
(
"info"
,
(
"sector: #%u offset: %u current: %lx "
"read: 0x%x stored: 0x%x"
,
i
,
offset
,
(
ulong
)
current
,
(
uint
)
page
[
offset
],
(
uint
)
table
[
i
]));
}
DBUG_RETURN
(
0
);
}
/**
@brief Log page validator (read callback)
...
...
@@ -2476,50 +2538,10 @@ static my_bool translog_page_validator(uchar *page,
}
page_pos
+=
CRC_SIZE
;
/* Skip crc */
}
if
(
flags
&
TRANSLOG_SECTOR_PROTECTION
)
{
uint
i
,
offset
;
uchar
*
table
=
page_pos
;
uint8
current
=
table
[
0
];
for
(
i
=
1
,
offset
=
DISK_DRIVE_SECTOR_SIZE
;
i
<
TRANSLOG_PAGE_SIZE
/
DISK_DRIVE_SECTOR_SIZE
;
i
++
,
offset
+=
DISK_DRIVE_SECTOR_SIZE
)
{
/*
TODO: add chunk counting for "suspecting" sectors (difference is
more than 1-2), if difference more then present chunks then it is
the problem.
*/
uint8
test
=
page
[
offset
];
DBUG_PRINT
(
"info"
,
(
"sector: #%u offset: %u current: %lx "
"read: 0x%x stored: 0x%x%x"
,
i
,
offset
,
(
ulong
)
current
,
(
uint
)
uint2korr
(
page
+
offset
),
(
uint
)
table
[
i
],
(
uint
)
table
[
i
+
1
]));
/*
3 is minimal possible record length. So we can have "distance"
between 2 sectors value more then DISK_DRIVE_SECTOR_SIZE / 3
only if it is old value, i.e. the sector was not written.
*/
if
(((
test
<
current
)
&&
(
0xFFL
-
current
+
test
>
DISK_DRIVE_SECTOR_SIZE
/
3
))
||
((
test
>=
current
)
&&
(
test
-
current
>
DISK_DRIVE_SECTOR_SIZE
/
3
)))
if
(
flags
&
TRANSLOG_SECTOR_PROTECTION
&&
translog_check_sector_protection
(
page
,
data
))
{
if
(
translog_recover_page_up_to_sector
(
page
,
offset
))
DBUG_RETURN
(
1
);
data
->
was_recovered
=
1
;
DBUG_RETURN
(
0
);
}
/* Restore value on the page */
page
[
offset
]
=
table
[
i
];
current
=
test
;
DBUG_PRINT
(
"info"
,
(
"sector: #%u offset: %u current: %lx "
"read: 0x%x stored: 0x%x"
,
i
,
offset
,
(
ulong
)
current
,
(
uint
)
page
[
offset
],
(
uint
)
table
[
i
]));
}
}
DBUG_RETURN
(
0
);
}
...
...
@@ -2729,15 +2751,14 @@ static uchar *translog_get_page(TRANSLOG_VALIDATOR_DATA *data, uchar *buffer,
}
file
=
get_logfile_by_number
(
file_no
);
buffer
=
(
uchar
*
)
pagecache_valid
_read
(
log_descriptor
.
pagecache
,
&
file
->
handler
,
(
uchar
*
)
pagecache
_read
(
log_descriptor
.
pagecache
,
&
file
->
handler
,
LSN_OFFSET
(
addr
)
/
TRANSLOG_PAGE_SIZE
,
3
,
(
direct_link
?
NULL
:
(
char
*
)
buffer
),
PAGECACHE_PLAIN_PAGE
,
(
direct_link
?
PAGECACHE_LOCK_READ
:
PAGECACHE_LOCK_LEFT_UNLOCKED
),
direct_link
,
&
translog_page_validator
,
(
uchar
*
)
data
);
direct_link
);
DBUG_PRINT
(
"info"
,
(
"Direct link is assigned to : 0x%lx * 0x%lx"
,
(
ulong
)
direct_link
,
(
ulong
)(
direct_link
?
*
direct_link
:
NULL
)));
...
...
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