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.