Re: [Gnu-arch-users] [Question] how to preserve multiple file's atomicity ?

[Aaron Bentley]

Tez Kamihira wrote:
> On Mon, 22 Nov 2004 09:35:19 -0500, Aaron Bentley <address@hidden> said:
>
> > Andrew Suffield wrote:
> >
> > > Arch archives are *strictly* write-once. They can be stored on
> > > write-once media in real time. No file may be opened for writing
> > > except when it is being created.
> >
> > I know what you mean, but that's not literally true.  .listing files may 
> > be modified when cacherevs are added or removed.
>
>
> and... how about my original question...? :-(

I am not aware of any technique that permits you to modify two files 
atomically in a POSIX filesystem.  You might be able to achive the 
effect you want by making a hard-linked copy of the directory (and all 
children), altering the files, and using rename (2) to replace the old 
directory with the new one.

Aaron

--
Aaron Bentley
Director of Technology
Panometrics, Inc.