source: chapter06/e2fsprogs.xml@ d3b4bb3

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Last change on this file since d3b4bb3 was 21184ce, checked in by Bruce Dubbs <bdubbs@…>, 6 years ago

Update to bison-3.1.
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Update to e2fsprogs-1.44.4.

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1<?xml version="1.0" encoding="ISO-8859-1"?>
2<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
3 "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
4 <!ENTITY % general-entities SYSTEM "../general.ent">
5 %general-entities;
6]>
7
8<sect1 id="ch-system-e2fsprogs" role="wrap">
9 <?dbhtml filename="e2fsprogs.html"?>
10
11 <sect1info condition="script">
12 <productname>e2fsprogs</productname>
13 <productnumber>&e2fsprogs-version;</productnumber>
14 <address>&e2fsprogs-url;</address>
15 </sect1info>
16
17 <title>E2fsprogs-&e2fsprogs-version;</title>
18
19 <indexterm zone="ch-system-e2fsprogs">
20 <primary sortas="a-E2fsprogs">E2fsprogs</primary>
21 </indexterm>
22
23 <sect2 role="package">
24 <title/>
25
26 <para>The E2fsprogs package contains the utilities for handling the
27 <systemitem class="filesystem">ext2</systemitem> file system. It also
28 supports the <systemitem class="filesystem">ext3</systemitem> and
29 <systemitem class="filesystem">ext4</systemitem> journaling
30 file systems.</para>
31
32 <segmentedlist>
33 <segtitle>&buildtime;</segtitle>
34 <segtitle>&diskspace;</segtitle>
35
36 <seglistitem>
37 <seg>&e2fsprogs-ch6-sbu;</seg>
38 <seg>&e2fsprogs-ch6-du;</seg>
39 </seglistitem>
40 </segmentedlist>
41
42 </sect2>
43
44 <sect2 role="installation">
45 <title>Installation of E2fsprogs</title>
46
47 <para>The E2fsprogs documentation recommends that the package be built in
48 a subdirectory of the source tree: </para>
49
50<screen><userinput remap="pre">mkdir -v build
51cd build</userinput></screen>
52
53 <para>Prepare E2fsprogs for compilation:</para>
54
55<!--<screen><userinput remap="configure">LIBS=-L/tools/lib \
56CFLAGS=-I/tools/include \
57CFLAGS=-I/tools/include \
58PKG_CONFIG_PATH=/tools/lib/pkgconfig \
59../configure - -prefix=/usr \-->
60<screen><userinput remap="configure">../configure --prefix=/usr \
61 --bindir=/bin \
62 --with-root-prefix="" \
63 --enable-elf-shlibs \
64 --disable-libblkid \
65 --disable-libuuid \
66 --disable-uuidd \
67 --disable-fsck</userinput></screen>
68
69 <variablelist>
70 <title>The meaning of the environment variable and configure options:</title>
71<!--
72 <varlistentry>
73 <term><parameter>PKG_CONFIG_PATH, LIBS, CFLAGS</parameter></term>
74 <listitem>
75 <para>These variables enable e2fsprogs to be built using the
76 <xref linkend="ch-tools-util-linux"/> package built earlier.</para>
77 </listitem>
78 </varlistentry>
79-->
80 <varlistentry>
81 <term><parameter>--with-root-prefix=""</parameter> and
82 <parameter>--bindir=/bin</parameter></term>
83 <listitem>
84 <para>Certain programs (such as the <command>e2fsck</command>
85 program) are considered essential programs. When, for example,
86 <filename class="directory">/usr</filename> is not mounted, these
87 programs still need to be available. They belong in directories
88 like <filename class="directory">/lib</filename> and <filename
89 class="directory">/sbin</filename>. If this option is not passed
90 to E2fsprogs' configure, the programs are installed into the
91 <filename class="directory">/usr</filename> directory.</para>
92 </listitem>
93 </varlistentry>
94
95 <varlistentry>
96 <term><parameter>--enable-elf-shlibs</parameter></term>
97 <listitem>
98 <para>This creates the shared libraries which some programs
99 in this package use.</para>
100 </listitem>
101 </varlistentry>
102
103 <varlistentry>
104 <term><parameter>--disable-*</parameter></term>
105 <listitem>
106 <para>This prevents E2fsprogs from building and installing the
107 <systemitem class="library">libuuid</systemitem> and
108 <systemitem class="library">libblkid</systemitem> libraries, the
109 <systemitem class="daemon">uuidd</systemitem> daemon, and the
110 <command>fsck</command> wrapper, as Util-Linux installs more
111 recent versions.</para>
112 </listitem>
113 </varlistentry>
114
115 </variablelist>
116
117 <para>Compile the package:</para>
118
119<screen><userinput remap="make">make</userinput></screen>
120
121 <para>To set up and run the test suite we need to first link some
122 libraries from /tools/lib to a location where the test programs look.
123 To run the tests, issue:</para>
124
125<screen><userinput remap="test">ln -sfv /tools/lib/lib{blk,uu}id.so.1 lib
126make LD_LIBRARY_PATH=/tools/lib check</userinput></screen>
127
128 <para>One of the E2fsprogs tests will attempt to allocate 256 MB of memory.
129 If you do not have significantly more RAM than this, be sure to enable
130 sufficient swap space for the test. See <xref
131 linkend="space-creatingfilesystem"/> and <xref linkend="space-mounting"/>
132 for details on creating and enabling swap space.</para>
133
134 <para>Install the binaries, documentation, and shared libraries:</para>
135
136<screen><userinput remap="install">make install</userinput></screen>
137
138 <para>Install the static libraries and headers:</para>
139
140<screen><userinput remap="install">make install-libs</userinput></screen>
141
142 <para>Make the installed static libraries writable so debugging symbols can
143 be removed later:</para>
144
145<screen><userinput remap="install">chmod -v u+w /usr/lib/{libcom_err,libe2p,libext2fs,libss}.a</userinput></screen>
146
147 <para>This package installs a gzipped
148 <filename class="extension">.info</filename> file but doesn't update the
149 system-wide <filename>dir</filename> file. Unzip this file and then update
150 the system <filename>dir</filename> file using the following
151 commands:</para>
152
153<screen><userinput remap="install">gunzip -v /usr/share/info/libext2fs.info.gz
154install-info --dir-file=/usr/share/info/dir /usr/share/info/libext2fs.info</userinput></screen>
155
156 <para>If desired, create and install some additional documentation by
157 issuing the following commands:</para>
158
159<screen><userinput remap="install">makeinfo -o doc/com_err.info ../lib/et/com_err.texinfo
160install -v -m644 doc/com_err.info /usr/share/info
161install-info --dir-file=/usr/share/info/dir /usr/share/info/com_err.info</userinput></screen>
162 </sect2>
163
164 <sect2 id="contents-e2fsprogs" role="content">
165 <title>Contents of E2fsprogs</title>
166
167 <segmentedlist>
168 <segtitle>Installed programs</segtitle>
169 <segtitle>Installed libraries</segtitle>
170 <segtitle>Installed directories</segtitle>
171
172 <seglistitem>
173 <seg>badblocks, chattr, compile_et, debugfs, dumpe2fs,e2freefrag,
174 e2fsck, e2image, e2label, e2undo, e4defrag, filefrag, fsck.ext2,
175 fsck.ext3, fsck.ext4, fsck.ext4dev, logsave, lsattr, mk_cmds, mke2fs,
176 mkfs.ext2, mkfs.ext3, mkfs.ext4, mkfs.ext4dev, mklost+found,
177 resize2fs, and tune2fs</seg>
178 <seg>libcom_err.so, libe2p.so, libext2fs.so, and libss.so</seg>
179 <seg>/usr/include/e2p, /usr/include/et, /usr/include/ext2fs,
180 /usr/include/ss, /usr/share/et, and /usr/share/ss</seg>
181 </seglistitem>
182 </segmentedlist>
183
184 <variablelist>
185 <bridgehead renderas="sect3">Short Descriptions</bridgehead>
186 <?dbfo list-presentation="list"?>
187 <?dbhtml list-presentation="table"?>
188
189 <varlistentry id="badblocks">
190 <term><command>badblocks</command></term>
191 <listitem>
192 <para>Searches a device (usually a disk partition) for bad
193 blocks</para>
194 <indexterm zone="ch-system-e2fsprogs badblocks">
195 <primary sortas="b-badblocks">badblocks</primary>
196 </indexterm>
197 </listitem>
198 </varlistentry>
199
200 <varlistentry id="chattr">
201 <term><command>chattr</command></term>
202 <listitem>
203 <para>Changes the attributes of files on an <systemitem
204 class="filesystem">ext2</systemitem> file system; it also
205 changes <systemitem class="filesystem">ext3</systemitem>
206 file systems, the journaling version of <systemitem
207 class="filesystem">ext2</systemitem> file systems</para>
208 <indexterm zone="ch-system-e2fsprogs chattr">
209 <primary sortas="b-chattr">chattr</primary>
210 </indexterm>
211 </listitem>
212 </varlistentry>
213
214 <varlistentry id="compile_et">
215 <term><command>compile_et</command></term>
216 <listitem>
217 <para>An error table compiler; it converts a table of error-code
218 names and messages into a C source file suitable for use with the
219 <filename class="libraryfile">com_err</filename> library</para>
220 <indexterm zone="ch-system-e2fsprogs compile_et">
221 <primary sortas="b-compile_et">compile_et</primary>
222 </indexterm>
223 </listitem>
224 </varlistentry>
225
226 <varlistentry id="debugfs">
227 <term><command>debugfs</command></term>
228 <listitem>
229 <para>A file system debugger; it can be used to examine and change
230 the state of an <systemitem class="filesystem">ext2</systemitem>
231 file system</para>
232 <indexterm zone="ch-system-e2fsprogs debugfs">
233 <primary sortas="b-debugfs">debugfs</primary>
234 </indexterm>
235 </listitem>
236 </varlistentry>
237
238 <varlistentry id="dumpe2fs">
239 <term><command>dumpe2fs</command></term>
240 <listitem>
241 <para>Prints the super block and blocks group information for the
242 file system present on a given device</para>
243 <indexterm zone="ch-system-e2fsprogs dumpe2fs">
244 <primary sortas="b-dumpe2fs">dumpe2fs</primary>
245 </indexterm>
246 </listitem>
247 </varlistentry>
248
249 <varlistentry id="e2freefrag">
250 <term><command>e2freefrag</command></term>
251 <listitem>
252 <para>Reports free space fragmentation information</para>
253 <indexterm zone="ch-system-e2fsprogs e2freefrag">
254 <primary sortas="b-e2freefrag">e2freefrag</primary>
255 </indexterm>
256 </listitem>
257 </varlistentry>
258
259 <varlistentry id="e2fsck">
260 <term><command>e2fsck</command></term>
261 <listitem>
262 <para>Is used to check, and optionally repair <systemitem
263 class="filesystem">ext2</systemitem> file systems and <systemitem
264 class="filesystem">ext3</systemitem> file systems</para>
265 <indexterm zone="ch-system-e2fsprogs e2fsck">
266 <primary sortas="b-e2fsck">e2fsck</primary>
267 </indexterm>
268 </listitem>
269 </varlistentry>
270
271 <varlistentry id="e2image">
272 <term><command>e2image</command></term>
273 <listitem>
274 <para>Is used to save critical <systemitem
275 class="filesystem">ext2</systemitem> file system data to a file</para>
276 <indexterm zone="ch-system-e2fsprogs e2image">
277 <primary sortas="b-e2image">e2image</primary>
278 </indexterm>
279 </listitem>
280 </varlistentry>
281
282 <varlistentry id="e2label">
283 <term><command>e2label</command></term>
284 <listitem>
285 <para>Displays or changes the file system label on the <systemitem
286 class="filesystem">ext2</systemitem> file system present on a given
287 device</para>
288 <indexterm zone="ch-system-e2fsprogs e2label">
289 <primary sortas="b-e2label">e2label</primary>
290 </indexterm>
291 </listitem>
292 </varlistentry>
293
294 <varlistentry id="e2undo">
295 <term><command>e2undo</command></term>
296 <listitem>
297 <para>Replays the undo log undo_log for an ext2/ext3/ext4 filesystem
298 found on a device [This can be used to undo a failed operation by an
299 e2fsprogs program.]</para>
300 <indexterm zone="ch-system-e2fsprogs e2undo">
301 <primary sortas="b-e2undo">e2undo</primary>
302 </indexterm>
303 </listitem>
304 </varlistentry>
305
306 <varlistentry id="e4defrag">
307 <term><command>e4defrag</command></term>
308 <listitem>
309 <para>Online defragmenter for ext4 filesystems</para>
310 <indexterm zone="ch-system-e2fsprogs e4defrag">
311 <primary sortas="b-e4defrag">e4defrag</primary>
312 </indexterm>
313 </listitem>
314 </varlistentry>
315
316 <varlistentry id="filefrag">
317 <term><command>filefrag</command></term>
318 <listitem>
319 <para>Reports on how badly fragmented a particular file might be</para>
320 <indexterm zone="ch-system-e2fsprogs filefrag">
321 <primary sortas="b-filefrag">filefrag</primary>
322 </indexterm>
323 </listitem>
324 </varlistentry>
325
326 <varlistentry id="fsck.ext2">
327 <term><command>fsck.ext2</command></term>
328 <listitem>
329 <para>By default checks <systemitem class="filesystem">ext2</systemitem>
330 file systems and is a hard link to <command>e2fsck</command></para>
331 <indexterm zone="ch-system-e2fsprogs fsck.ext2">
332 <primary sortas="b-fsck.ext2">fsck.ext2</primary>
333 </indexterm>
334 </listitem>
335 </varlistentry>
336
337 <varlistentry id="fsck.ext3">
338 <term><command>fsck.ext3</command></term>
339 <listitem>
340 <para>By default checks <systemitem class="filesystem">ext3</systemitem>
341 file systems and is a hard link to <command>e2fsck</command></para>
342 <indexterm zone="ch-system-e2fsprogs fsck.ext3">
343 <primary sortas="b-fsck.ext3">fsck.ext3</primary>
344 </indexterm>
345 </listitem>
346 </varlistentry>
347
348 <varlistentry id="fsck.ext4">
349 <term><command>fsck.ext4</command></term>
350 <listitem>
351 <para>By default checks <systemitem class="filesystem">ext4</systemitem>
352 file systems and is a hard link to <command>e2fsck</command></para>
353 <indexterm zone="ch-system-e2fsprogs fsck.ext4">
354 <primary sortas="b-fsck.ext4">fsck.ext4</primary>
355 </indexterm>
356 </listitem>
357 </varlistentry>
358
359 <varlistentry id="fsck.ext4dev">
360 <term><command>fsck.ext4dev</command></term>
361 <listitem>
362 <para>By default checks <systemitem class="filesystem">ext4</systemitem>
363 development file systems and is a hard link to
364 <command>e2fsck</command></para>
365 <indexterm zone="ch-system-e2fsprogs fsck.ext4dev">
366 <primary sortas="b-fsck.ext4dev">fsck.ext4dev</primary>
367 </indexterm>
368 </listitem>
369 </varlistentry>
370
371 <varlistentry id="logsave">
372 <term><command>logsave</command></term>
373 <listitem>
374 <para>Saves the output of a command in a log file</para>
375 <indexterm zone="ch-system-e2fsprogs logsave">
376 <primary sortas="b-logsave">logsave</primary>
377 </indexterm>
378 </listitem>
379 </varlistentry>
380
381 <varlistentry id="lsattr">
382 <term><command>lsattr</command></term>
383 <listitem>
384 <para>Lists the attributes of files on a second extended file
385 system</para>
386 <indexterm zone="ch-system-e2fsprogs lsattr">
387 <primary sortas="b-lsattr">lsattr</primary>
388 </indexterm>
389 </listitem>
390 </varlistentry>
391
392 <varlistentry id="mk_cmds">
393 <term><command>mk_cmds</command></term>
394 <listitem>
395 <para>Converts a table of command names and help messages into a C
396 source file suitable for use with the <filename
397 class="libraryfile">libss</filename> subsystem library</para>
398 <indexterm zone="ch-system-e2fsprogs mk_cmds">
399 <primary sortas="b-mk_cmds">mk_cmds</primary>
400 </indexterm>
401 </listitem>
402 </varlistentry>
403
404 <varlistentry id="mke2fs">
405 <term><command>mke2fs</command></term>
406 <listitem>
407 <para>Creates an <systemitem class="filesystem">ext2</systemitem>
408 or <systemitem class="filesystem">ext3</systemitem> file system on
409 the given device</para>
410 <indexterm zone="ch-system-e2fsprogs mke2fs">
411 <primary sortas="b-mke2fs">mke2fs</primary>
412 </indexterm>
413 </listitem>
414 </varlistentry>
415
416 <varlistentry id="mkfs.ext2">
417 <term><command>mkfs.ext2</command></term>
418 <listitem>
419 <para>By default creates <systemitem class="filesystem">ext2</systemitem>
420 file systems and is a hard link to <command>mke2fs</command></para>
421 <indexterm zone="ch-system-e2fsprogs mkfs.ext2">
422 <primary sortas="b-mkfs.ext2">mkfs.ext2</primary>
423 </indexterm>
424 </listitem>
425 </varlistentry>
426
427 <varlistentry id="mkfs.ext3">
428 <term><command>mkfs.ext3</command></term>
429 <listitem>
430 <para>By default creates <systemitem class="filesystem">ext3</systemitem>
431 file systems and is a hard link to <command>mke2fs</command></para>
432 <indexterm zone="ch-system-e2fsprogs mkfs.ext3">
433 <primary sortas="b-mkfs.ext3">mkfs.ext3</primary>
434 </indexterm>
435 </listitem>
436 </varlistentry>
437
438 <varlistentry id="mkfs.ext4">
439 <term><command>mkfs.ext4</command></term>
440 <listitem>
441 <para>By default creates <systemitem class="filesystem">ext4</systemitem>
442 file systems and is a hard link to <command>mke2fs</command></para>
443 <indexterm zone="ch-system-e2fsprogs mkfs.ext4">
444 <primary sortas="b-mkfs.ext4">mkfs.ext4</primary>
445 </indexterm>
446 </listitem>
447 </varlistentry>
448
449 <varlistentry id="mkfs.ext4dev">
450 <term><command>mkfs.ext4dev</command></term>
451 <listitem>
452 <para>By default creates <systemitem class="filesystem">ext4</systemitem>
453 development file systems and is a hard link to <command>mke2fs</command></para>
454 <indexterm zone="ch-system-e2fsprogs mkfs.ext4dev">
455 <primary sortas="b-mkfs.ext4dev">mkfs.ext4dev</primary>
456 </indexterm>
457 </listitem>
458 </varlistentry>
459
460 <varlistentry id="mklost-found">
461 <term><command>mklost+found</command></term>
462 <listitem>
463 <para>Used to create a <filename class="directory">lost+found</filename>
464 directory on an <systemitem class="filesystem">ext2</systemitem> file
465 system; it pre-allocates disk blocks to this directory to lighten the
466 task of <command>e2fsck</command></para>
467 <indexterm zone="ch-system-e2fsprogs mklost-found">
468 <primary sortas="b-mklost+found">mklost+found</primary>
469 </indexterm>
470 </listitem>
471 </varlistentry>
472
473 <varlistentry id="resize2fs">
474 <term><command>resize2fs</command></term>
475 <listitem>
476 <para>Can be used to enlarge or shrink an <systemitem
477 class="filesystem">ext2</systemitem> file system</para>
478 <indexterm zone="ch-system-e2fsprogs resize2fs">
479 <primary sortas="b-resize2fs">resize2fs</primary>
480 </indexterm>
481 </listitem>
482 </varlistentry>
483
484 <varlistentry id="tune2fs">
485 <term><command>tune2fs</command></term>
486 <listitem>
487 <para>Adjusts tunable file system parameters on an <systemitem
488 class="filesystem">ext2</systemitem> file system</para>
489 <indexterm zone="ch-system-e2fsprogs tune2fs">
490 <primary sortas="b-tune2fs">tune2fs</primary>
491 </indexterm>
492 </listitem>
493 </varlistentry>
494
495 <varlistentry id="libcom_err">
496 <term><filename class="libraryfile">libcom_err</filename></term>
497 <listitem>
498 <para>The common error display routine</para>
499 <indexterm zone="ch-system-e2fsprogs libcom_err">
500 <primary sortas="c-libcom_err">libcom_err</primary>
501 </indexterm>
502 </listitem>
503 </varlistentry>
504
505 <varlistentry id="libe2p">
506 <term><filename class="libraryfile">libe2p</filename></term>
507 <listitem>
508 <para>Used by <command>dumpe2fs</command>, <command>chattr</command>,
509 and <command>lsattr</command></para>
510 <indexterm zone="ch-system-e2fsprogs libe2p">
511 <primary sortas="c-libe2p">libe2p</primary>
512 </indexterm>
513 </listitem>
514 </varlistentry>
515
516 <varlistentry id="libext2fs">
517 <term><filename class="libraryfile">libext2fs</filename></term>
518 <listitem>
519 <para>Contains routines to enable user-level programs to manipulate an
520 <systemitem class="filesystem">ext2</systemitem> file system</para>
521 <indexterm zone="ch-system-e2fsprogs libext2fs">
522 <primary sortas="c-libext2fs">libext2fs</primary>
523 </indexterm>
524 </listitem>
525 </varlistentry>
526
527 <varlistentry id="libss">
528 <term><filename class="libraryfile">libss</filename></term>
529 <listitem>
530 <para>Used by <command>debugfs</command></para>
531 <indexterm zone="ch-system-e2fsprogs libss">
532 <primary sortas="c-libss">libss</primary>
533 </indexterm>
534 </listitem>
535 </varlistentry>
536
537 </variablelist>
538
539 </sect2>
540
541</sect1>
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