From: Valerie Aurora <vaurora@redhat.com>
To: Miklos Szeredi <miklos@szeredi.hu>
Cc: viro@zeniv.linux.org.uk, jblunck@suse.de, hch@infradead.org,
linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org
Subject: Re: [PATCH 21/38] union-mount: Support for mounting union mount file systems
Date: Wed, 4 Aug 2010 15:50:08 -0400 [thread overview]
Message-ID: <20100804195008.GB2134@shell> (raw)
In-Reply-To: <E1OgfNb-0000ok-7p@pomaz-ex.szeredi.hu>
On Wed, Aug 04, 2010 at 04:55:39PM +0200, Miklos Szeredi wrote:
> On Tue, 15 Jun 2010, Valerie Aurora wrote:
> > Create and tear down union mount structures on mount. Check
> > requirements for union mounts. This version clones the read-only
> > mounts and puts them in an array hanging off the superblock of the
> > topmost layer.
>
> If I do
>
> mount -r fs1 /mnt
> mount -r fs2 /mnt
> mount -ounion fs3 /mnt
>
> then only fs2 and fs3 will be unioned.
>
> Or how are multiple read-only layers supposed to work?
You have it right, this is a bug in lookup in the last version I sent
out. I had commented out the part of my test suite that actually
tested three layer mounts so I didn't notice when I broke it. :/ I'll
post a new version with the fix today.
-VAL
next prev parent reply other threads:[~2010-08-04 19:50 UTC|newest]
Thread overview: 111+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-06-15 18:39 [PATCH 00/38] Union mounts - union stack as linked list Valerie Aurora
2010-06-15 18:39 ` [PATCH 01/38] VFS: Comment follow_mount() and friends Valerie Aurora
2010-06-15 18:39 ` [PATCH 02/38] VFS: Make lookup_hash() return a struct path Valerie Aurora
2010-06-15 18:39 ` [PATCH 03/38] VFS: Add read-only users count to superblock Valerie Aurora
2010-06-15 18:39 ` [PATCH 04/38] autofs4: Save autofs trigger's vfsmount in super block info Valerie Aurora
2010-06-16 4:04 ` [autofs] " Ian Kent
2010-06-16 23:14 ` Valerie Aurora
2010-06-17 2:04 ` Ian Kent
2010-06-21 3:39 ` Ian Kent
2010-06-21 13:06 ` Miklos Szeredi
2010-06-21 13:24 ` Ian Kent
2010-06-22 4:46 ` Ian Kent
2010-06-22 5:49 ` J. R. Okajima
2010-06-22 13:11 ` Ian Kent
2010-06-23 1:23 ` Ian Kent
2010-06-23 2:07 ` J. R. Okajima
2010-06-23 2:37 ` Ian Kent
2010-06-24 1:35 ` Ian Kent
2010-06-24 5:16 ` Ian Kent
2010-06-15 18:39 ` [PATCH 05/38] whiteout/NFSD: Don't return information about whiteouts to userspace Valerie Aurora
2010-06-15 18:39 ` Valerie Aurora
2010-06-15 18:39 ` [PATCH 06/38] whiteout: Add vfs_whiteout() and whiteout inode operation Valerie Aurora
2010-07-13 3:52 ` Ian Kent
2010-07-16 19:50 ` Valerie Aurora
2010-06-15 18:39 ` [PATCH 07/38] whiteout: Set S_OPAQUE inode flag when creating directories Valerie Aurora
2010-07-13 4:05 ` Ian Kent
2010-07-16 20:12 ` Valerie Aurora
2010-07-17 4:14 ` Ian Kent
2010-06-15 18:39 ` [PATCH 08/38] whiteout: Allow removal of a directory with whiteouts Valerie Aurora
2010-06-15 18:39 ` [PATCH 09/38] whiteout: tmpfs whiteout support Valerie Aurora
2010-06-15 18:39 ` Valerie Aurora
2010-06-15 18:39 ` [PATCH 10/38] whiteout: Split of ext2_append_link() from ext2_add_link() Valerie Aurora
2010-06-15 18:39 ` [PATCH 11/38] whiteout: ext2 whiteout support Valerie Aurora
2010-07-13 4:24 ` Ian Kent
2010-07-19 22:14 ` Valerie Aurora
2010-06-15 18:39 ` [PATCH 12/38] whiteout: jffs2 " Valerie Aurora
2010-06-15 18:39 ` Valerie Aurora
2010-06-15 18:39 ` Valerie Aurora
2010-06-15 18:39 ` [PATCH 13/38] fallthru: Basic fallthru definitions Valerie Aurora
2010-06-15 18:39 ` [PATCH 14/38] fallthru: ext2 fallthru support Valerie Aurora
2010-07-13 4:30 ` Ian Kent
2010-08-04 14:44 ` Miklos Szeredi
2010-08-04 22:48 ` Valerie Aurora
2010-08-05 10:36 ` Miklos Szeredi
2010-08-05 23:30 ` Valerie Aurora
2010-08-06 8:15 ` Miklos Szeredi
2010-08-06 17:16 ` Valerie Aurora
2010-08-06 17:44 ` Miklos Szeredi
2010-08-04 23:04 ` Valerie Aurora
2010-08-05 11:13 ` Miklos Szeredi
2010-08-06 17:12 ` Valerie Aurora
2010-08-17 22:27 ` Valerie Aurora
2010-08-18 8:26 ` Miklos Szeredi
2010-06-15 18:39 ` [PATCH 15/38] fallthru: jffs2 " Valerie Aurora
2010-06-15 18:39 ` Valerie Aurora
2010-06-15 18:39 ` Valerie Aurora
2010-06-15 18:39 ` [PATCH 16/38] fallthru: tmpfs " Valerie Aurora
2010-06-15 18:39 ` [PATCH 17/38] union-mount: Union mounts documentation Valerie Aurora
2010-06-17 8:01 ` Alex Riesen
2010-06-17 18:39 ` Valerie Aurora
2010-06-17 20:32 ` Alex Riesen
2010-06-18 21:06 ` Valerie Aurora
2010-06-21 13:14 ` Miklos Szeredi
2010-06-21 23:17 ` Valerie Aurora
2010-06-23 8:43 ` Alex Riesen
2010-06-23 8:43 ` Alex Riesen
2010-06-15 18:39 ` [PATCH 18/38] union-mount: Introduce MNT_UNION and MS_UNION flags Valerie Aurora
2010-06-15 18:39 ` [PATCH 19/38] union-mount: Introduce union_dir structure and basic operations Valerie Aurora
2010-07-13 4:39 ` Ian Kent
2010-07-16 20:51 ` Valerie Aurora
2010-08-04 14:51 ` Miklos Szeredi
2010-08-04 19:47 ` Valerie Aurora
2010-08-05 10:28 ` Miklos Szeredi
2010-08-06 17:09 ` Valerie Aurora
2010-06-15 18:39 ` [PATCH 20/38] union-mount: Free union dirs on removal from dcache Valerie Aurora
2010-06-15 18:39 ` [PATCH 21/38] union-mount: Support for mounting union mount file systems Valerie Aurora
2010-07-13 4:47 ` Ian Kent
2010-07-16 21:02 ` Valerie Aurora
2010-07-20 3:12 ` Ian Kent
2010-08-04 21:59 ` Valerie Aurora
2010-08-05 10:34 ` Miklos Szeredi
2010-08-06 16:33 ` Valerie Aurora
2010-07-16 21:05 ` Valerie Aurora
2010-08-04 14:55 ` Miklos Szeredi
2010-08-04 19:50 ` Valerie Aurora [this message]
2010-08-05 4:26 ` Valerie Aurora
2010-06-15 18:39 ` [PATCH 22/38] union-mount: Implement union lookup Valerie Aurora
2010-07-13 4:49 ` Ian Kent
2010-07-19 21:58 ` Valerie Aurora
2010-06-15 18:39 ` [PATCH 23/38] union-mount: Call do_whiteout() on unlink and rmdir in unions Valerie Aurora
2010-06-15 18:39 ` [PATCH 24/38] union-mount: Copy up directory entries on first readdir() Valerie Aurora
2010-07-13 4:51 ` Ian Kent
2010-06-15 18:39 ` [PATCH 25/38] VFS: Split inode_permission() and create path_permission() Valerie Aurora
2010-06-15 18:39 ` [PATCH 26/38] VFS: Create user_path_nd() to lookup both parent and target Valerie Aurora
2010-06-15 18:39 ` [PATCH 27/38] union-mount: In-kernel file copyup routines Valerie Aurora
2010-07-13 4:56 ` Ian Kent
2010-07-19 22:41 ` Valerie Aurora
2010-08-04 15:26 ` Miklos Szeredi
2010-08-05 19:54 ` Valerie Aurora
2010-06-15 18:39 ` [PATCH 28/38] union-mount: Implement union-aware access()/faccessat() Valerie Aurora
2010-06-15 18:39 ` [PATCH 29/38] union-mount: Implement union-aware link() Valerie Aurora
2010-06-15 18:40 ` [PATCH 30/38] union-mount: Implement union-aware rename() Valerie Aurora
2010-06-15 18:40 ` [PATCH 31/38] union-mount: Implement union-aware writable open() Valerie Aurora
2010-06-15 18:40 ` [PATCH 32/38] union-mount: Implement union-aware chown() Valerie Aurora
2010-06-15 18:40 ` [PATCH 33/38] union-mount: Implement union-aware truncate() Valerie Aurora
2010-06-15 18:40 ` [PATCH 34/38] union-mount: Implement union-aware chmod()/fchmodat() Valerie Aurora
2010-06-15 18:40 ` [PATCH 35/38] union-mount: Implement union-aware lchown() Valerie Aurora
2010-06-15 18:40 ` [PATCH 36/38] union-mount: Implement union-aware utimensat() Valerie Aurora
2010-06-15 18:40 ` [PATCH 37/38] union-mount: Implement union-aware setxattr() Valerie Aurora
2010-06-15 18:40 ` [PATCH 38/38] union-mount: Implement union-aware lsetxattr() Valerie Aurora
2010-06-25 19:04 [PATCH 00/38] Union mounts - multiple layers and submounts Valerie Aurora
2010-06-25 19:05 ` [PATCH 21/38] union-mount: Support for mounting union mount file systems Valerie Aurora
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