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From: David Howells <dhowells@redhat.com>
To: Trond Myklebust <trond.myklebust@fys.uio.no>
Cc: Andrew Morton <akpm@osdl.org>,
	nfsv4@linux-nfs.org, linux-kernel@vger.kernel.org,
	torvalds@osdl.org, linux-cachefs@redhat.com,
	linux-fsdevel@vger.kernel.org, Ian Kent <raven@themaw.net>
Subject: Re: [PATCH 0/7] Permit filesystem local caching and NFS superblock sharing [try #13]
Date: Tue, 05 Sep 2006 10:57:06 +0100	[thread overview]
Message-ID: <4012.1157450226@warthog.cambridge.redhat.com> (raw)
In-Reply-To: <1157421445.5510.13.camel@localhost>

Trond Myklebust <trond.myklebust@fys.uio.no> wrote:

> Why the hell is it doing a mkdir in the first place?

I think the problems it is solving are these:

 (1) What happens if "/" is _not_ exported?

 (2) What happens if some intermediate directory (say "/usr") is not
     accessible?


In the first case, the automounter just makes "usr" and "usr/src", say, in the
autofs filesystem, and then mounts server:/usr/src on that.

In the second case, the automounter relies on NFS letting it make intervening
directories it couldn't otherwise access to span the gap between "/" and
"src".

David

  parent reply	other threads:[~2006-09-05  9:57 UTC|newest]

Thread overview: 72+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-08-30 19:31 [PATCH 0/7] Permit filesystem local caching and NFS superblock sharing [try #13] David Howells
2006-08-30 19:31 ` [PATCH 1/7] FS-Cache: Provide a filesystem-specific sync'able page bit " David Howells
2006-08-30 19:31 ` [PATCH 2/7] FS-Cache: Generic filesystem caching facility " David Howells
2006-08-30 19:32 ` [PATCH 3/7] FS-Cache: Release page->private after failed readahead " David Howells
2006-08-30 19:32 ` [PATCH 4/7] FS-Cache: Make kAFS use FS-Cache " David Howells
2006-08-30 19:32 ` [PATCH 5/7] NFS: Use local caching " David Howells
2006-08-30 19:32 ` [PATCH 6/7] FS-Cache: CacheFiles: ia64: missing copy_page export " David Howells
2006-08-30 19:32 ` [PATCH 7/7] FS-Cache: CacheFiles: A cache that backs onto a mounted filesystem " David Howells
2006-08-30 19:52 ` [PATCH 0/7] Permit filesystem local caching and NFS superblock sharing " Andrew Morton
2006-08-30 20:37 ` David Howells
2006-08-30 20:55   ` Andrew Morton
2006-08-31  9:58   ` David Howells
2006-08-31 17:21     ` Andrew Morton
2006-08-31 17:26       ` Trond Myklebust
2006-08-31 17:42     ` David Howells
2006-08-31 18:04       ` Andrew Morton
2006-09-01 13:08     ` David Howells
2006-09-01 16:34       ` Andrew Morton
2006-09-01 17:00         ` Trond Myklebust
2006-09-02  2:50           ` Andrew Morton
2006-09-02  4:11             ` Ian Kent
2006-09-02  5:58               ` Andrew Morton
2006-09-03  6:21                 ` Ian Kent
2006-09-03  6:30                   ` Andrew Morton
2006-09-03  6:43                     ` Ian Kent
2006-09-03 16:58                       ` Andrew Morton
2006-09-04  2:23                         ` Ian Kent
2006-09-04  5:40                         ` Ian Kent
2006-09-02  4:49             ` Ian Kent
2006-09-04 11:52           ` David Howells
2006-09-04 11:52           ` David Howells
2006-09-04 13:24             ` Ian Kent
2006-09-05  1:57               ` Trond Myklebust
2006-09-05  2:55                 ` Ian Kent
2006-09-05  3:50                   ` Trond Myklebust
2006-09-05  4:03                     ` Ian Kent
2006-09-05  4:53                       ` Trond Myklebust
2006-09-05  6:06                         ` Ian Kent
2006-09-05  7:01                           ` Ian Kent
2006-09-05 12:52                             ` Trond Myklebust
2006-09-06  4:54                               ` Ian Kent
2006-09-05  9:40                         ` David Howells
2006-09-05 10:20                           ` Ian Kent
2006-09-05 10:37                           ` David Howells
2006-09-05 12:20                             ` Ian Kent
2006-09-05 13:38                             ` David Howells
2006-09-06  4:58                               ` Ian Kent
2006-09-06  9:51                               ` David Howells
2006-09-06 12:46                                 ` Trond Myklebust
2006-09-06 13:24                                 ` David Howells
2006-09-07  5:30                                   ` Ian Kent
2006-09-07  6:17                                     ` Trond Myklebust
2006-09-07  7:40                                       ` Ian Kent
2006-09-05  9:48                 ` David Howells
2006-09-05 10:14                   ` Ian Kent
2006-09-05  9:57               ` David Howells [this message]
2006-09-05 12:47                 ` Trond Myklebust
2006-09-05 12:53                   ` Trond Myklebust
2006-09-05 13:40                   ` David Howells
2006-09-06 10:27                   ` Ian Kent
2006-09-04 13:46             ` David Howells
2006-09-04 15:00               ` Ian Kent
2006-09-05  4:11               ` Ian Kent
2006-09-05  4:17                 ` Trond Myklebust
2006-09-05  2:23             ` Trond Myklebust
2006-09-05  3:01               ` Ian Kent
2006-09-05  4:05                 ` Trond Myklebust
2006-09-05  4:06               ` Ian Kent
2006-09-05  4:57                 ` Trond Myklebust
2006-09-05  6:45                   ` Ian Kent
2006-09-05  7:07                     ` Ian Kent
2006-09-04 18:20       ` David Howells

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