Re: filesystem transactions API

Trond Myklebust
2005-04-26T14:26:57Z

ty den 26.04.2005 Klokka 16:46 (+0300) skreiv Ville Herva:
> Apparently, Windows Longhorn will include something called "transactional
> NTFS". It's explained pretty well in
>
> http://blogs.msdn.com/because_we_can/
>
> Basically, a process can create a fs transaction, and all fs changes made
> between start of the transaction and commit are atomical - meaning nothing
> is visible until commit, and if commit fails, everything is rolled back.
>
> Sound useful... Although there are no service pack installs that could fail
> in Linux, the same thing could be useful in rpm, yum, almost anything.
>
> What do you think?

NetApp have implemented something similar in their DAFS filesystem
called "rollback locks" (or autorecover locks).

http://www.watersprings.org/pub/id/draft-wittle-dafs-00.txt

Very useful for database apps etc.

Cheers,
Trond
--
Trond Myklebust <trond.myklebust@fys.uio.no>