1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
|
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<title>Release 3.3: memp_fget, EIO</title>
<link rel="stylesheet" href="gettingStarted.css" type="text/css" />
<meta name="generator" content="DocBook XSL Stylesheets V1.73.2" />
<link rel="start" href="index.html" title="Berkeley DB Programmer's Reference Guide" />
<link rel="up" href="upgrade_3_3_toc.html" title="Chapter 36. Upgrading Berkeley DB 3.2 applications to Berkeley DB 3.3" />
<link rel="prev" href="upgrade_3_3_conflict.html" title="Release 3.3: DB_LOCK_CONFLICT" />
<link rel="next" href="upgrade_3_3_txn_prepare.html" title="Release 3.3: txn_prepare" />
</head>
<body>
<div class="navheader">
<table width="100%" summary="Navigation header">
<tr>
<th colspan="3" align="center">Release 3.3: memp_fget, EIO</th>
</tr>
<tr>
<td width="20%" align="left"><a accesskey="p" href="upgrade_3_3_conflict.html">Prev</a> </td>
<th width="60%" align="center">Chapter 36. Upgrading Berkeley DB 3.2 applications to Berkeley DB 3.3</th>
<td width="20%" align="right"> <a accesskey="n" href="upgrade_3_3_txn_prepare.html">Next</a></td>
</tr>
</table>
<hr />
</div>
<div class="sect1" lang="en" xml:lang="en">
<div class="titlepage">
<div>
<div>
<h2 class="title" style="clear: both"><a id="upgrade_3_3_memp_fget"></a>Release 3.3: memp_fget, EIO</h2>
</div>
</div>
</div>
<p>Previous releases of Berkeley DB returned the system error EIO when the
memp_fget function was called to retrieve a page, the page did not
exist, and the <code class="literal">DB_MPOOL_CREATE</code> flag was not set. In the 3.3
release, the error <code class="literal">DB_PAGE_NOTFOUND</code> is returned instead, to
allow applications to distinguish between recoverable and
non-recoverable errors. Applications calling the memp_fget function
and checking for a return of EIO should check for
<code class="literal">DB_PAGE_NOTFOUND</code> instead.</p>
<p>Previous releases of Berkeley DB treated filesystem I/O failure (the most
common of which the filesystem running out of space), as a fatal error,
returning <a class="link" href="program_errorret.html#program_errorret.DB_RUNRECOVERY">DB_RUNRECOVERY</a>. When a filesystem failure happens in
the 3.3 release Berkeley DB returns the underlying system error (usually EIO),
but can continue to run. Applications should abort any enclosing
transaction when a recoverable system error occurs in order to recover
from the error.</p>
</div>
<div class="navfooter">
<hr />
<table width="100%" summary="Navigation footer">
<tr>
<td width="40%" align="left"><a accesskey="p" href="upgrade_3_3_conflict.html">Prev</a> </td>
<td width="20%" align="center">
<a accesskey="u" href="upgrade_3_3_toc.html">Up</a>
</td>
<td width="40%" align="right"> <a accesskey="n" href="upgrade_3_3_txn_prepare.html">Next</a></td>
</tr>
<tr>
<td width="40%" align="left" valign="top">Release 3.3: DB_LOCK_CONFLICT </td>
<td width="20%" align="center">
<a accesskey="h" href="index.html">Home</a>
</td>
<td width="40%" align="right" valign="top"> Release 3.3: txn_prepare</td>
</tr>
</table>
</div>
</body>
</html>
|
