Thanks.
-- Sasha
On Tue, 2005-01-18 at 09:18 +0100, Jules Wolfrat wrote:
>
> > -----Original Message-----
> > From: LHC Computer Grid - Rollout
> > [mailto:[log in to unmask]] On Behalf Of Burke, S (Stephen)
> > Sent: maandag 17 januari 2005 17:46
> > To: [log in to unmask]
> > Subject: Re: [LCG-ROLLOUT] [ATLAS-LCG] Disk failure at Prague
> >
> > LHC Computer Grid - Rollout
> > > [mailto:[log in to unmask]] On Behalf Of Jules
> > Wolfrat said:
> > > The VO doesn't have to notice, the sysadmins are supposed to
> > > detect that
> > > the RLS is broken (e.g. a disk crash) and have to restore,
> > at least at
> > > our site. And we keep backups at least for several weeks.
> >
> > I wasn't thinking of crashes so much as deliberate or
> > accidental corruption
> > by a user/hacker, which might well go un-noticed until
> > someone tries to
> > access one of the missing files.
>
> That's true, but you must make a distinction between the database that
> RLS is and the physical file itself. The file itself can be destroyed
> while the RLS itself still thinks that the file is present. What you
> need is some mechanism to check the integrity of the RLS, e.g. run every
> night a consistency check on the RLS!
>
> Jules
> >
> > Stephen
> >
