login
Header Space

 
 

Re: recent nfs change causes autofs regression

Score:
Previous message: [thread] [date] [author]
Next message: [thread] [date] [author]
To: Linus Torvalds <torvalds@...>
Cc: Frank van Maarseveen <frankvm@...>, Hua Zhong <hzhong@...>, 'Linux Kernel Mailing List' <linux-kernel@...>, <akpm@...>
Date: Friday, August 31, 2007 - 3:03 pm

On Fri, 2007-08-31 at 10:01 -0700, Linus Torvalds wrote:

I agree for the cases where you can use bind mounts, however you can't
always do that.

Consider the fairly common setup where /foo, /foo/a, /foo/b are all on
the same filesystem on the server, but only /foo/a and /foo/b are
exported.
There can be plenty of files that are contain hard links in both
directories, but because you cannot mount the parent, /foo, you will not
be able to ensure that these common files are cached to the same inode
(which they need to be).

IOW: with this scenario, you can't ensure that local posix semantics
hold (i.e. that if my client is the only user, then the filesystem will
behave as if it were a posix filesystem). That would be a major
regression.


(a) I'm not sure that is true: see (b).
(b) You gain remount clarity at the expense of local posix filesystem
correctness.

Trond

-
Previous message: [thread] [date] [author]
Next message: [thread] [date] [author]

Messages in current thread:
recent nfs change causes autofs regression, Hua Zhong, (Thu Aug 30, 5:07 pm)
Re: recent nfs change causes autofs regression, Frank van Maarseveen, (Fri Aug 31, 4:14 am)
Re: recent nfs change causes autofs regression, Ian Kent, (Fri Aug 31, 5:05 am)
Re: recent nfs change causes autofs regression, Trond Myklebust, (Thu Aug 30, 6:37 pm)
Re: recent nfs change causes autofs regression, Linus Torvalds, (Thu Aug 30, 11:49 pm)
Re: recent nfs change causes autofs regression, Trond Myklebust, (Fri Aug 31, 12:21 pm)
Re: recent nfs change causes autofs regression, Bill Davidsen, (Sat Sep 1, 8:58 pm)
Re: recent nfs change causes autofs regression, David Howells, (Tue Sep 4, 3:54 am)
Re: recent nfs change causes autofs regression, Ian Kent, (Wed Sep 5, 8:44 am)
Re: recent nfs change causes autofs regression, Trond Myklebust, (Wed Sep 5, 12:26 pm)
Re: recent nfs change causes autofs regression, David Howells, (Wed Sep 5, 11:37 am)
Re: recent nfs change causes autofs regression, Trond Myklebust, (Wed Sep 5, 11:50 am)
Re: recent nfs change causes autofs regression, Ian Kent, (Thu Sep 6, 1:23 am)
Re: recent nfs change causes autofs regression, Bill Davidsen, (Wed Sep 5, 8:35 am)
Re: recent nfs change causes autofs regression, David Howells, (Wed Sep 5, 11:34 am)
RE: recent nfs change causes autofs regression, Hua Zhong, (Fri Aug 31, 2:47 pm)
RE: recent nfs change causes autofs regression, Trond Myklebust, (Fri Aug 31, 3:13 pm)
RE: recent nfs change causes autofs regression, Hua Zhong, (Fri Aug 31, 3:35 pm)
Re: recent nfs change causes autofs regression, Linus Torvalds, (Fri Aug 31, 1:01 pm)
Re: recent nfs change causes autofs regression, David Howells, (Tue Sep 4, 4:35 am)
Re: recent nfs change causes autofs regression, Linus Torvalds, (Tue Sep 4, 5:04 am)
Re: recent nfs change causes autofs regression, David Howells, (Tue Sep 4, 4:02 am)
Re: recent nfs change causes autofs regression, Trond Myklebust, (Fri Aug 31, 3:03 pm)
Re: recent nfs change causes autofs regression, Trond Myklebust, (Fri Aug 31, 12:44 am)
Re: recent nfs change causes autofs regression, Linus Torvalds, (Fri Aug 31, 12:59 am)
Re: recent nfs change causes autofs regression, Ian Kent, (Fri Aug 31, 1:38 am)
Re: recent nfs change causes autofs regression, Martin Knoblauch, (Fri Aug 31, 4:54 am)
Re: recent nfs change causes autofs regression, Trond Myklebust, (Fri Aug 31, 1:04 am)
RE: recent nfs change causes autofs regression, Hua Zhong, (Fri Aug 31, 1:24 am)
Re: recent nfs change causes autofs regression, Linus Torvalds, (Fri Aug 31, 1:16 am)
Re: recent nfs change causes autofs regression, Jakob Oestergaard, (Fri Aug 31, 3:40 am)
Re: recent nfs change causes autofs regression, Frank van Maarseveen, (Fri Aug 31, 4:28 am)
Re: recent nfs change causes autofs regression, Linus Torvalds, (Fri Aug 31, 4:07 am)
Re: recent nfs change causes autofs regression, Trond Myklebust, (Fri Aug 31, 8:11 am)
Re: recent nfs change causes autofs regression, David Howells, (Tue Sep 4, 3:51 am)
Re: recent nfs change causes autofs regression, Frank van Maarseveen, (Fri Aug 31, 9:12 am)
Re: recent nfs change causes autofs regression, Trond Myklebust, (Fri Aug 31, 9:50 am)
Re: recent nfs change causes autofs regression, Frank van Maarseveen, (Fri Aug 31, 10:42 am)
Re: recent nfs change causes autofs regression, Jakob Oestergaard, (Fri Aug 31, 4:51 am)
Re: recent nfs change causes autofs regression, Linus Torvalds, (Fri Aug 31, 12:43 pm)
Re: recent nfs change causes autofs regression, Jakob Oestergaard, (Mon Sep 3, 9:20 am)
Re: recent nfs change causes autofs regression, Martin Knoblauch, (Mon Sep 3, 9:43 am)
RE: recent nfs change causes autofs regression, Hua Zhong, (Thu Aug 30, 11:57 pm)
Re: recent nfs change causes autofs regression, Andrew Morton, (Thu Aug 30, 9:24 pm)
Re: recent nfs change causes autofs regression, Trond Myklebust, (Fri Aug 31, 12:33 am)
RE: recent nfs change causes autofs regression, Hua Zhong, (Thu Aug 30, 6:47 pm)
RE: recent nfs change causes autofs regression, Trond Myklebust, (Thu Aug 30, 7:22 pm)
RE: recent nfs change causes autofs regression, Hua Zhong, (Thu Aug 30, 7:30 pm)
RE: recent nfs change causes autofs regression, Trond Myklebust, (Thu Aug 30, 7:37 pm)
RE: recent nfs change causes autofs regression, Hua Zhong, (Thu Aug 30, 7:44 pm)
RE: recent nfs change causes autofs regression, Trond Myklebust, (Fri Aug 31, 12:31 am)
Re: recent nfs change causes autofs regression, Matthias Schniedermeyer, (Fri Aug 31, 3:50 am)
RE: recent nfs change causes autofs regression, Ian Kent, (Fri Aug 31, 1:09 am)
RE: recent nfs change causes autofs regression, Linus Torvalds, (Fri Aug 31, 12:38 am)
RE: recent nfs change causes autofs regression, Trond Myklebust, (Fri Aug 31, 12:57 am)
RE: recent nfs change causes autofs regression, Hua Zhong, (Fri Aug 31, 12:47 am)
speck-geostationary