From: Pavel Machek <pavel@ucw.cz>
To: "Theodore Y. Ts'o" <tytso@mit.edu>,
Matthew Wilcox <willy@infradead.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
David Howells <dhowells@redhat.com>,
Al Viro <viro@zeniv.linux.org.uk>,
linux-fsdevel <linux-fsdevel@vger.kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 36/38] vfs: Add a sample program for the new mount API [ver #10]
Date: Mon, 30 Jul 2018 23:23:00 +0200 [thread overview]
Message-ID: <20180730212300.GA17452@amd> (raw)
In-Reply-To: <20180730210209.GY21725@thunk.org>
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On Mon 2018-07-30 17:02:09, Theodore Y. Ts'o wrote:
> On Mon, Jul 30, 2018 at 12:49:38PM -0700, Matthew Wilcox wrote:
> > > That said, people have wanted these kinds of extended error
> > > descriptors forever, and the reason we haven't added them is that it
> > > generally is more pain than it is necessarily worth. I'm not actually
> > > at all convinced that has magically changed with the mount
> > > configuration thing.
> >
> > I'm not convinced we want to do this either, but if there's anywhere we
> > do want to do it then mount seems like one of the few places it might be
> > worth doing. The reasons that a mount failed are many, and it doesn't
> > seem like a good idea to introduce a new errno every time a network
> > filesystem finds a new failure mode.
>
> We've lived without VMS-style error reporting for a long time, and it
> *that* much of a real problem. Even with network file systems, I
?
> So it might be that we're seriously over-thinking things. Most of the
> really complicated error messages are at connection setup time, and
> that can be done in userspace, and then userspace can handle all of
> that awful gettext, or VMS-style error messages, or whatever other
> horrors the I18N community want to inflict on us. :-)
Well, this is designing brand-new error reporting channel to the
userspace. I see that changing dmesg to provide something usable for
gettext would be hard, but it is quite trivial to do it right this
time.
I agree we survived without that for a long time, but we have chance
to do it right for a minimum price (because the interface is new we
don't need compatibility).
Thanks,
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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next prev parent reply other threads:[~2018-07-30 22:59 UTC|newest]
Thread overview: 98+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-07-27 17:31 [PATCH 00/38] VFS: Introduce filesystem context [ver #10] David Howells
2018-07-27 17:31 ` [PATCH 01/38] vfs: syscall: Add open_tree(2) to reference or clone a mount " David Howells
2018-07-27 17:31 ` [PATCH 02/38] vfs: syscall: Add move_mount(2) to move mounts around " David Howells
2018-07-27 17:31 ` [PATCH 03/38] teach move_mount(2) to work with OPEN_TREE_CLONE " David Howells
2018-07-27 17:31 ` [PATCH 04/38] vfs: Suppress MS_* flag defs within the kernel unless explicitly enabled " David Howells
2018-07-27 17:31 ` [PATCH 05/38] vfs: Introduce the basic header for the new mount API's filesystem context " David Howells
2018-07-27 17:32 ` [PATCH 06/38] vfs: Introduce logging functions " David Howells
2018-07-27 17:32 ` [PATCH 07/38] vfs: Add configuration parser helpers " David Howells
2018-07-27 17:32 ` [PATCH 08/38] vfs: Add LSM hooks for the new mount API " David Howells
2018-07-27 17:32 ` [PATCH 09/38] selinux: Implement the new mount API LSM hooks " David Howells
2018-07-27 17:32 ` [PATCH 10/38] smack: Implement filesystem context security " David Howells
2018-07-27 17:32 ` [PATCH 11/38] apparmor: Implement security hooks for the new mount API " David Howells
2018-07-27 17:32 ` [PATCH 12/38] vfs: Pass key and value into LSM and FS and provide a helper parser " David Howells
2018-07-27 17:32 ` [PATCH 13/38] tomoyo: Implement security hooks for the new mount API " David Howells
2018-07-28 2:29 ` Tetsuo Handa
2018-07-30 10:49 ` David Howells
2018-07-27 17:32 ` [PATCH 14/38] vfs: Separate changing mount flags full remount " David Howells
2018-07-27 17:33 ` [PATCH 15/38] vfs: Implement a filesystem superblock creation/configuration context " David Howells
2018-07-27 17:33 ` [PATCH 16/38] vfs: Remove unused code after filesystem context changes " David Howells
2018-07-27 17:33 ` [PATCH 17/38] procfs: Move proc_fill_super() to fs/proc/root.c " David Howells
2018-07-27 17:33 ` [PATCH 18/38] proc: Add fs_context support to procfs " David Howells
2018-07-27 17:33 ` [PATCH 19/38] ipc: Convert mqueue fs to fs_context " David Howells
2018-07-27 17:33 ` [PATCH 20/38] cpuset: Use " David Howells
2018-07-27 17:33 ` [PATCH 21/38] kernfs, sysfs, cgroup, intel_rdt: Support " David Howells
2018-07-27 17:33 ` [PATCH 22/38] hugetlbfs: Convert to " David Howells
2018-07-27 17:33 ` [PATCH 23/38] vfs: Remove kern_mount_data() " David Howells
2018-07-27 17:34 ` [PATCH 24/38] vfs: Provide documentation for new mount API " David Howells
2018-07-27 17:34 ` [PATCH 25/38] Make anon_inodes unconditional " David Howells
2018-07-27 20:04 ` Randy Dunlap
2018-07-30 10:52 ` David Howells
2018-07-27 17:34 ` [PATCH 26/38] vfs: syscall: Add fsopen() to prepare for superblock creation " David Howells
2018-07-27 17:34 ` [PATCH 27/38] vfs: Implement logging through fs_context " David Howells
2018-07-27 17:34 ` [PATCH 28/38] vfs: Add some logging to the core users of the fs_context log " David Howells
2018-07-27 17:34 ` [PATCH 29/38] vfs: syscall: Add fsconfig() for configuring and managing a context " David Howells
2018-07-27 19:42 ` Andy Lutomirski
2018-07-27 21:51 ` David Howells
2018-07-27 21:57 ` Andy Lutomirski
2018-07-27 22:27 ` David Howells
2018-07-27 22:32 ` Jann Horn
2018-07-29 8:50 ` David Howells
2018-07-29 11:14 ` Jann Horn
2018-07-30 12:32 ` David Howells
2018-07-27 17:34 ` [PATCH 30/38] vfs: syscall: Add fsmount() to create a mount for a superblock " David Howells
2018-07-27 19:27 ` Andy Lutomirski
2018-07-27 19:43 ` Andy Lutomirski
2018-07-27 22:09 ` David Howells
2018-07-27 22:06 ` David Howells
2018-07-27 17:34 ` [PATCH 31/38] vfs: syscall: Add fspick() to select a superblock for reconfiguration " David Howells
2018-07-27 17:34 ` [PATCH 32/38] afs: Add fs_context support " David Howells
2018-07-27 17:35 ` [PATCH 33/38] afs: Use fs_context to pass parameters over automount " David Howells
2018-07-27 17:35 ` [PATCH 34/38] vfs: syscall: Add fsinfo() to query filesystem information " David Howells
2018-07-27 19:35 ` Andy Lutomirski
2018-07-27 22:12 ` David Howells
2018-07-27 23:14 ` Jann Horn
2018-07-27 23:49 ` David Howells
2018-07-28 0:14 ` Anton Altaparmakov
2018-07-27 23:51 ` David Howells
2018-07-27 23:58 ` Jann Horn
2018-07-28 0:08 ` David Howells
2018-07-30 14:48 ` David Howells
2018-07-31 4:16 ` Al Viro
2018-07-31 12:39 ` David Howells
2018-07-31 13:20 ` David Howells
2018-07-31 23:49 ` Darrick J. Wong
2018-08-01 1:07 ` David Howells
2018-07-27 17:35 ` [PATCH 35/38] afs: Add fsinfo support " David Howells
2018-07-27 17:35 ` [PATCH 36/38] vfs: Add a sample program for the new mount API " David Howells
2018-07-29 11:37 ` Pavel Machek
2018-07-30 12:23 ` David Howells
2018-07-30 14:31 ` Pavel Machek
2018-07-30 18:08 ` Matthew Wilcox
2018-07-30 18:16 ` Pavel Machek
2018-07-30 18:18 ` Linus Torvalds
2018-07-30 18:38 ` Matthew Wilcox
2018-07-30 18:59 ` Linus Torvalds
2018-07-30 19:49 ` Matthew Wilcox
2018-07-30 21:02 ` Theodore Y. Ts'o
2018-07-30 21:23 ` Pavel Machek [this message]
2018-07-30 23:58 ` Matthew Wilcox
2018-07-31 0:58 ` Theodore Y. Ts'o
2018-07-31 9:40 ` Pavel Machek
2018-07-31 10:11 ` David Howells
2018-07-31 11:34 ` Pavel Machek
2018-07-31 12:07 ` Matthew Wilcox
2018-07-31 12:28 ` Pavel Machek
2018-07-31 13:33 ` Al Viro
2018-07-31 13:00 ` David Howells
2018-07-31 19:39 ` Pavel Machek
2018-07-31 21:00 ` David Howells
2018-07-31 21:21 ` Linus Torvalds
2018-07-31 21:38 ` David Howells
2018-07-30 20:47 ` Pavel Machek
2018-07-30 15:33 ` David Howells
2018-07-30 17:30 ` Pavel Machek
2018-07-30 17:54 ` Linus Torvalds
2018-07-30 18:16 ` Pavel Machek
2018-07-27 17:35 ` [PATCH 37/38] vfs: Allow fsinfo() to query what's in an fs_context " David Howells
2018-07-27 17:35 ` [PATCH 38/38] vfs: Allow fsinfo() to be used to query an fs parameter description " David Howells
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