On Thu, Aug 13, 2009 at 12:23 PM, Darren J
Moffat<darr...@opensolaris.org> wrote:
> russell aspinwall wrote:
>>
>> Are tools necessary to ensure that deleted ZFS pools can not be recovered
>> or that deleted filesystems are really deleted?
>
> dd if=/dev/zero over the disks, or use format(1M) analyze -> purge.
>
> For just a single filesystem you can get some comfort level by doing:
>
> zfs destroy tank/mysensitive
> dd if=/dev/zero of=/tank/fill bs=128k
> rm /tank/fill
>
If you happen to have compression turned on that won't do anything.
You'll have better luck with /dev/urandom.
> Not perfect but all we have today for datasets.
--
Regards,
Cyril
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