lkml.org 
[lkml]   [2006]   [Aug]   [10]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: Urgent help needed on an NFS question, please help!!!
On Thu, Aug 10, 2006 at 11:15:57AM -0400, Xin Zhao wrote:
> I am considering another possibility: suppose client C1 does lookup()
> on file X and gets a file handle, which include inode number,
> generation number and parent's inode number. Before C1 issues
> getattr(), C2 move the parent directory to a different place, which
> will not change the parent's inode number, neither the file X's inode,
> i_generation. So when C1 issues a getattr() request with this file
> handle, the server seems to have no way to detect that file X is not
> existent at the original path. Instead, the server will returns the
> moved X's attributes, which are correct, but semantically wrong. Is
> there any way that server deal with this problem?

It isn't semantically wrong. There is no way for the application to
distinguish between the events:

open()
stat()
mv

and

open()
mv
stat()

As long as the results are consistent with the former case, it doesn't
matter if the latter case actually happened.
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2006-08-10 18:15    [W:0.091 / U:0.116 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site