ZFS. Deleting data permanently?

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p01nt2011-05-30 19:54:51

ZFS

p01nt, 2011-05-30 19:54:51

Actually, the subject ...
In the case of ZFS, utilities such as shred are useless. Is there an alternative?
The option will boot from the LiveCD and do not offer to fill the disk with dd ...)) I
'm interested in the final removal of specific directories, or rather the dataset once used by the non-global zone.

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4 answer(s)

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afiskon, 2011-05-31
@afiskon

>> In the case of ZFS, utilities such as shred are useless. Is there an alternative?
Heap! UFS, EXT*, FAT in the end :)

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AnViar, 2011-05-30
@AnViar

It is interesting to know the methodology for recovering data from a deleted dataset ... Share it?

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equand, 2011-05-30
@equand

As an option, delete the file and then fill the pool with random data to zero several times with deletion.

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Pavel, 2015-06-10
@pbt39

usually encryption is initially set up, but if this is not the case, then after deleting the data, write several times in a random size exceeding the amount of previous data by 100% + 60% of the free space, repeat several times.
If you tell me how to recover data from a remote dataset, please let me know...