Re: [Fwd: take away nfs write permissions instantly]

[Tom McNeal <trmcneal@attbi.com>]

Hi -

Here is an update on Solaris behavior from a SUN architect; 
I hadn't realized it would notice the export change and 
return errors.  I'd assume that Linux is behaving like I 
said, but it appears that it should notice.  

Tom


Peter Staubach wrote:
> 
> 
> Re-exporting a file system to remove write permission will immediately
> disable all clients from writing through that export.  The client will
> not know that the files are now read-only, but they will be.  The file
> system does not need to be remounted or anything else like that.  The
> EROFS errors will just start being returned from the server to the
> client.
> 
> When this person indicates that the client could still write data,
> I would presume that the write(2) system call appears to succeed,
> ie. doesn't return an error, but encounters the EROFS error later
> when it actually tries to write the data to the server.
> 
>                 ps

--
------------------------------------------------------------
Tom McNeal       trmcneal@attbi.com     (650)906-0761 (cell) 
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