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> Is there an alternative non-optional strategy for achieving secure delete Issue normal data writes of blocks that are filled with zeros. The same way regular
by kllrnohj 7y ago
> Is there an alternative non-optional strategy for achieving secure delete
Issue normal data writes of blocks that are filled with zeros. The same way regular data makes it to the drive just fine will also of course work for data that's all zeros.
- pixl97 7y agoWould that work on a filesystem that supports sparse files?
- throwaway373438 7y agoWe're talking about the filesystem driver itself issuing the write. The above is a discussion about whether the filesystem driver or the block device driver would issue the SCSI commands. This would never happen from userspace.
- tedunangst 7y agoWhy would you need to overwrite blocks of a sparse file? Which blocks would you be overwriting?
- jjoonathan 7y agoOh, so WRITE SAME doesn't come with "no wear leveling" semantics? That makes emulation much more reasonable.
- kllrnohj 7y agoI think the only way to get "no wear leveling" is the ATA Secure Erase command. Which you only need for devices that do wear leveling in the first place which the drive in question doesn't anyway so it's a bit moot.