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authorPavel Machek <pavel@suse.cz>2009-01-09 18:47:21 -0500
committerJiri Kosina <jkosina@suse.cz>2009-03-30 09:21:56 -0400
commite3375ac767b847127df57d186a26abf83d055982 (patch)
tree492f248c4e6819a883a3eb2e96cec407895b83c9 /Documentation/filesystems
parent0d34fb8e93ceba7b6dad0062dbb4a0813bacd75b (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/filesystems')
-rw-r--r--Documentation/filesystems/ext3.txt14
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
14When mounting an ext3 filesystem, the following option are accepted: 14When mounting an ext3 filesystem, the following option are accepted:
15(*) == default 15(*) == default
16 16
17ro 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
17journal=update Update the ext3 file system's journal to the current 22journal=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
30noload Don't load the journal on mounting. 35noload 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
32data=journal All data are committed into the journal prior to being 39data=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
93debug Extra debugging information is sent to syslog. 100debug Extra debugging information is sent to syslog.
94 101
95errors=remount-ro(*) Remount the filesystem read-only on an error. 102errors=remount-ro Remount the filesystem read-only on an error.
96errors=continue Keep going on a filesystem error. 103errors=continue Keep going on a filesystem error.
97errors=panic Panic and halt the machine if an error occurs. 104errors=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
99data_err=ignore(*) Just print an error message if an error occurs 109data_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.