diff options
author | Pavel Machek <pavel@suse.cz> | 2009-01-09 18:47:21 -0500 |
---|---|---|
committer | Jiri Kosina <jkosina@suse.cz> | 2009-03-30 09:21:56 -0400 |
commit | e3375ac767b847127df57d186a26abf83d055982 (patch) | |
tree | 492f248c4e6819a883a3eb2e96cec407895b83c9 /Documentation | |
parent | 0d34fb8e93ceba7b6dad0062dbb4a0813bacd75b (diff) |
trivial: document ext3 semantics of 'ro' option a bit better
ext3 has quite unexpected semantics or "ro" and defaults are
not what they are documented to be, due to mkfs override.
Signed-off-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'Documentation')
-rw-r--r-- | Documentation/filesystems/ext3.txt | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/Documentation/filesystems/ext3.txt b/Documentation/filesystems/ext3.txt index e5f3833a6ef8..570f9bd9be2b 100644 --- a/Documentation/filesystems/ext3.txt +++ b/Documentation/filesystems/ext3.txt | |||
@@ -14,6 +14,11 @@ Options | |||
14 | When mounting an ext3 filesystem, the following option are accepted: | 14 | When mounting an ext3 filesystem, the following option are accepted: |
15 | (*) == default | 15 | (*) == default |
16 | 16 | ||
17 | ro Mount filesystem read only. Note that ext3 will replay | ||
18 | the journal (and thus write to the partition) even when | ||
19 | mounted "read only". Mount options "ro,noload" can be | ||
20 | used to prevent writes to the filesystem. | ||
21 | |||
17 | journal=update Update the ext3 file system's journal to the current | 22 | journal=update Update the ext3 file system's journal to the current |
18 | format. | 23 | format. |
19 | 24 | ||
@@ -27,7 +32,9 @@ journal_dev=devnum When the external journal device's major/minor numbers | |||
27 | identified through its new major/minor numbers encoded | 32 | identified through its new major/minor numbers encoded |
28 | in devnum. | 33 | in devnum. |
29 | 34 | ||
30 | noload Don't load the journal on mounting. | 35 | noload Don't load the journal on mounting. Note that this forces |
36 | mount of inconsistent filesystem, which can lead to | ||
37 | various problems. | ||
31 | 38 | ||
32 | data=journal All data are committed into the journal prior to being | 39 | data=journal All data are committed into the journal prior to being |
33 | written into the main file system. | 40 | written into the main file system. |
@@ -92,9 +99,12 @@ nocheck | |||
92 | 99 | ||
93 | debug Extra debugging information is sent to syslog. | 100 | debug Extra debugging information is sent to syslog. |
94 | 101 | ||
95 | errors=remount-ro(*) Remount the filesystem read-only on an error. | 102 | errors=remount-ro Remount the filesystem read-only on an error. |
96 | errors=continue Keep going on a filesystem error. | 103 | errors=continue Keep going on a filesystem error. |
97 | errors=panic Panic and halt the machine if an error occurs. | 104 | errors=panic Panic and halt the machine if an error occurs. |
105 | (These mount options override the errors behavior | ||
106 | specified in the superblock, which can be | ||
107 | configured using tune2fs.) | ||
98 | 108 | ||
99 | data_err=ignore(*) Just print an error message if an error occurs | 109 | data_err=ignore(*) Just print an error message if an error occurs |
100 | in a file data buffer in ordered mode. | 110 | in a file data buffer in ordered mode. |