Re: filesystem transactions API

[Trond Myklebust]

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@xxxxxxxxxx>

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