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-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 e5f3833a6ef..570f9bd9be2 100644
--- a/Documentation/filesystems/ext3.txt
+++ b/Documentation/filesystems/ext3.txt
@@ -14,6 +14,11 @@ Options
When mounting an ext3 filesystem, the following option are accepted:
(*) == default
+ro Mount filesystem read only. Note that ext3 will replay
+ the journal (and thus write to the partition) even when
+ mounted "read only". Mount options "ro,noload" can be
+ used to prevent writes to the filesystem.
+
journal=update Update the ext3 file system's journal to the current
format.
@@ -27,7 +32,9 @@ journal_dev=devnum When the external journal device's major/minor numbers
identified through its new major/minor numbers encoded
in devnum.
-noload Don't load the journal on mounting.
+noload Don't load the journal on mounting. Note that this forces
+ mount of inconsistent filesystem, which can lead to
+ various problems.
data=journal All data are committed into the journal prior to being
written into the main file system.
@@ -92,9 +99,12 @@ nocheck
debug Extra debugging information is sent to syslog.
-errors=remount-ro(*) Remount the filesystem read-only on an error.
+errors=remount-ro Remount the filesystem read-only on an error.
errors=continue Keep going on a filesystem error.
errors=panic Panic and halt the machine if an error occurs.
+ (These mount options override the errors behavior
+ specified in the superblock, which can be
+ configured using tune2fs.)
data_err=ignore(*) Just print an error message if an error occurs
in a file data buffer in ordered mode.