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trivial: document ext3 semantics of 'ro' option a bit better

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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>
This commit is contained in:
Pavel Machek 2009-01-10 00:47:21 +01:00 committed by Jiri Kosina
parent 0d34fb8e93
commit e3375ac767
1 changed files with 12 additions and 2 deletions
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14
Documentation/filesystems/ext3.txt
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@ -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.