On 10/5/06, Dale Ghent <daleg at elemental.org> wrote:
> Casper.Dik at sun.com wrote:
> >> "Every day we are archiving documents. At the end of the day we want
> >> to freeze the filesystem. Would it be possible to add a time-lock
> >> property to ZFS? Could this be extended to still allow new files to be
> >> added to the locked file system , but not allowing to add/modify files
> >> (ZFS ACL's could handle this)?"
> >
> > Don't snapshots handle most of this functionality?
> I guess he could snapshot at the end of the day and then roll it back in
> the morning and have in effect a freezing of the data. But do it from cron.
> Or zfs set readonly=on <volume> from cron. There's your time lock.
> I think that a time lock feature for setting things RO or RW would be
> out of place in ZFS. Cool, yes, but not needed in ZFS itself. The effect
> of a timed lock can be achieved with cron and two ZFS commands.
> /dale
Point taken. :)


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