On Thu, 2015-12-17 at 01:09 +, Duncan wrote:
> Well, "don't load the journal on mounting" is exactly what the option
> would do. The journal (aka log) of course has a slightly different
> meaning, it's only the fsync log, but loading it is exactly what the
> option would prevent, here.
Christoph Anton Mitterer posted on Wed, 16 Dec 2015 12:45:00 +0100 as
excerpted:
> On Wed, 2015-12-16 at 11:10 +, Duncan wrote:
>> And noload doesn't have the namespace collision problem norecovery does
>> on btrfs, so I'd strongly suggest using it, at least as an alias for
>> whatever other
Qu Wenruo posted on Wed, 16 Dec 2015 09:36:23 +0800 as excerpted:
> David Sterba wrote on 2015/12/14 18:32 +0100:
>> On Thu, Dec 10, 2015 at 10:34:06AM +0800, Qu Wenruo wrote:
>>> Introduce a new mount option "nologreplay" to co-operate with "ro"
>>> mount option to get real readonly mount, like
On Wed, 2015-12-16 at 11:10 +, Duncan wrote:
> And noload doesn't have the namespace collision problem norecovery
> does
> on btrfs, so I'd strongly suggest using it, at least as an alias for
> whatever other btrfs-specific name we might choose.
but noload is, AFAIU, not what's desired
On 2015-12-16 06:10, Duncan wrote:
Qu Wenruo posted on Wed, 16 Dec 2015 09:36:23 +0800 as excerpted:
David Sterba wrote on 2015/12/14 18:32 +0100:
On Thu, Dec 10, 2015 at 10:34:06AM +0800, Qu Wenruo wrote:
Introduce a new mount option "nologreplay" to co-operate with "ro"
mount option to get
On Mon, Dec 14, 2015 at 12:50:37PM -0500, Austin S. Hemmelgarn wrote:
> On 2015-12-14 12:32, David Sterba wrote:
> > On Thu, Dec 10, 2015 at 10:34:06AM +0800, Qu Wenruo wrote:
> >> Introduce a new mount option "nologreplay" to co-operate with "ro" mount
> >> option to get real readonly mount, like
On 2015-12-16 07:34, Christoph Anton Mitterer wrote:
On Wed, 2015-12-16 at 07:12 -0500, Austin S. Hemmelgarn wrote:
I kind of agree with Christoph here. I don't think that noload
should
be the what we actually use, although I do think having it as an
alias
for whatever name we end up using
On Wed, Dec 16, 2015 at 09:36:23AM +0800, Qu Wenruo wrote:
> >
> > mount -o ro,nowr /dev/sdx /mnt
> >
> > would work when switching kernels.
> >
> That would be nice.
>
> I'd like to forward the idea/discussion to filesystem ml, not only btrfs
> maillist.
Good idea.
> Such behavior should
On Wed, 2015-12-16 at 07:12 -0500, Austin S. Hemmelgarn wrote:
> I kind of agree with Christoph here. I don't think that noload
> should
> be the what we actually use, although I do think having it as an
> alias
> for whatever name we end up using would be a good thing.
No, because people would
On Wed, 2015-12-16 at 07:57 -0500, Austin S. Hemmelgarn wrote:
> No, because we should ease the transition from other filesystems to
> the
> greatest extent reasonably possible. It should be clearly documented
> as
> an alias for compatibility with ext{3,4}, and that it might go away
> in
>
On 2015-12-14 18:34, Christoph Anton Mitterer wrote:
On Mon, 2015-12-14 at 15:20 -0500, Austin S. Hemmelgarn wrote:
On 2015-12-14 14:44, Christoph Anton Mitterer wrote:
On Mon, 2015-12-14 at 14:33 -0500, Austin S. Hemmelgarn wrote:
The traditional reasoning was that read-only meant that users
David Sterba wrote on 2015/12/14 18:32 +0100:
On Thu, Dec 10, 2015 at 10:34:06AM +0800, Qu Wenruo wrote:
Introduce a new mount option "nologreplay" to co-operate with "ro" mount
option to get real readonly mount, like "norecovery" in ext* and xfs.
Since the new parse_options() need to check
On Wed, 2015-12-16 at 09:36 +0800, Qu Wenruo wrote:
> One sad example is, we can't use 'norecovery' mount option to disable
> log replay in btrfs, as there is 'recovery' mount option already.
I think "norecovery" would anyway not really fit... the name should
rather indicated, that from the
On Mon, 2015-12-14 at 15:20 -0500, Austin S. Hemmelgarn wrote:
> On 2015-12-14 14:44, Christoph Anton Mitterer wrote:
> > On Mon, 2015-12-14 at 14:33 -0500, Austin S. Hemmelgarn wrote:
> > > The traditional reasoning was that read-only meant that users
> > > couldn't
> > > change anything
> >
On Thu, Dec 10, 2015 at 10:34:06AM +0800, Qu Wenruo wrote:
> Introduce a new mount option "nologreplay" to co-operate with "ro" mount
> option to get real readonly mount, like "norecovery" in ext* and xfs.
>
> Since the new parse_options() need to check new flags at remount time,
> so add a new
On 2015-12-14 14:44, Christoph Anton Mitterer wrote:
On Mon, 2015-12-14 at 14:33 -0500, Austin S. Hemmelgarn wrote:
The traditional reasoning was that read-only meant that users
couldn't
change anything
Where I'd however count the atime changes to.
The atimes wouldn't change magically, but
On Mon, 2015-12-14 at 18:32 +0100, David Sterba wrote:
> I've read the discussions around the change and from the user's POV
> I'd
> suggest to add another mount option that would be just an alias for
> any
> mount options that would implement the 'hard-ro' semantics.
Nice to hear...
> Say it's
On Mon, 2015-12-14 at 12:50 -0500, Austin S. Hemmelgarn wrote:
> It should also imply noatime. I'm not sure how BTRFS handles atime
> when
> mounted RO, but I know a lot of old UNIX systems updated atime even
> on
> filesystems mounted RO, and I know that at least at one point Linux
> did too.
On 2015-12-14 14:16, Christoph Anton Mitterer wrote:
On Mon, 2015-12-14 at 12:50 -0500, Austin S. Hemmelgarn wrote:
It should also imply noatime. I'm not sure how BTRFS handles atime
when
mounted RO, but I know a lot of old UNIX systems updated atime even
on
filesystems mounted RO, and I know
On Mon, 2015-12-14 at 14:33 -0500, Austin S. Hemmelgarn wrote:
> The traditional reasoning was that read-only meant that users
> couldn't
> change anything
Where I'd however count the atime changes to.
The atimes wouldn't change magically, but only because the user stared
some program, configured
On 2015-12-14 12:32, David Sterba wrote:
On Thu, Dec 10, 2015 at 10:34:06AM +0800, Qu Wenruo wrote:
Introduce a new mount option "nologreplay" to co-operate with "ro" mount
option to get real readonly mount, like "norecovery" in ext* and xfs.
Since the new parse_options() need to check new
Introduce a new mount option "nologreplay" to co-operate with "ro" mount
option to get real readonly mount, like "norecovery" in ext* and xfs.
Since the new parse_options() need to check new flags at remount time,
so add a new parameter for parse_options().
Signed-off-by: Qu Wenruo
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