(your email keeps ending up in gmail spam folder) On Mon, Apr 18, 2016 at 9:24 AM, sri <toyours_srid...@yahoo.co.in> wrote: > I tried btrfs-image and created image file and ran btrfs-image -r to a > different disk. Once recovered and mounted, I can able to see data is > not zeroed out as mentioned in btrfs-image man page.
"different disk" you mention, that is important info. If you doe the restore to a image file, that image file is sparse and all data blocks are read as zeros. However, if you restore to a block device, then you can assume it just writes the device blocks for metadata and leaves the rest untouched. So trim whole device first or brute-force overwrite completely with zeros. So maybe the man pages needs some correction / extra notes. > I tried on same machine. > > -- > To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in > the body of a message to majord...@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
