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SubjectRe: [RFC] ext3 documentation (lack of)
El Tue, 17 Aug 2004 23:01:06 -0700 Ryan Cumming <ryan@spitfire.gotdns.org> escribió:

> Setting commit to zero doesn't seem to disable it, judging from my local
> 2.6.8.1-mm1 source.


Ugh, sure, I just assumed it'd disable it. Anyway, here's a updated version.

(It'd be nice if people could provide a description for the rest so we can
recollect and submit them)

Diego Calleja

--- stable/Documentation/filesystems/ext3.txt-documentsync 2004-08-18 01:55:48.000000000 +0200
+++ stable/Documentation/filesystems/ext3.txt 2004-08-18 13:37:37.000000000 +0200
@@ -22,6 +22,54 @@
the inode which will represent the ext3 file
system's journal file.

+noload Don't load the journal on mounting.
+
+data=journal All data are committed into the journal prior
+ to being written into the main file system.
+
+data=ordered (*) All data are forced directly out to the main file
+ system prior to its metadata being committed to
+ the journal.
+
+data=writeback Data ordering is not preserved, data may be
+ written into the main file system after its
+ metadata has been committed to the journal.
+
+commit=nrsec (*) Ext3 can be told to sync all its data and metadata
+ every 'nrsec' seconds. The default value is 5 seconds.
+ This means that if you lose your power, you will lose,
+ as much, the latest 5 seconds of work (your filesystem
+ will not be damaged though, thanks to journaling). This
+ default value (or any low value) will hurt performance,
+ but it's good for data-safety. Setting it to 0 will
+ have the same effect than leaving the default 5 sec.
+ Setting it to very large values will improve
+ performance.
+
+barrier=?? (*)?? This enables/disables the "journal barrier"
+
+orlov (*) This enables the new Orlov block allocator. It's enabled
+ by default.
+
+oldalloc This disables the Orlov block allocator and enables the
+ old block allocator. Orlov should have better performance,
+ we'd like to get some feedback if it's the contrary for
+ you.
+
+user_xattr=
+
+nouser_xattr=
+
+acl=
+
+noacl=
+
+reservation=
+
+noreservation=
+
+resize=
+
bsddf (*) Make 'df' act like BSD.
minixdf Make 'df' act like Minix.

@@ -30,8 +78,6 @@

debug Extra debugging information is sent to syslog.

-noload Don't load the journal on mounting.
-
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.
@@ -48,17 +94,6 @@

sb=n Use alternate superblock at this location.

-data=journal All data are committed into the journal prior
- to being written into the main file system.
-
-data=ordered (*) All data are forced directly out to the main file
- system prior to its metadata being committed to
- the journal.
-
-data=writeback Data ordering is not preserved, data may be
- written into the main file system after its
- metadata has been committed to the journal.
-
quota Quota options are currently silently ignored.
noquota (see fs/ext3/super.c, line 594)
grpquota
-
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