[dm-crypt] cryptsetup luksFormat with the size option

Robert Nichols rnicholsNOSPAM at comcast.net
Sun Feb 2 01:35:12 CET 2014


On 02/01/2014 06:18 PM, Arno Wagner wrote:
> On Sun, Feb 02, 2014 at 00:33:27 CET, Robert Nichols wrote:
>> On 02/01/2014 03:34 PM, Arno Wagner wrote:
>>> On Sat, Feb 01, 2014 at 21:50:19 CET, Matthew Thode wrote:
>>>> Am I correct in stating that setting --size=8 will make the sectors 4k
>>>> in size?  Also, how can I check what existing luks volumes are set to?
>>>>
>>>> --
>>>> -- Matthew Thode
>>>>
>>>
>>> No, you are not. As the man-page clearly states, this sets the
>>> size of the underlying device as multiple of 512B sectors.
>>
>> I submit that for the luksFormat action, the --size option does _nothing_!
>
> Yes. Nor should it. See the man-page:
>
>    --size, -b <number of 512 byte sectors>
>           Force the size of the underlying device in sectors of 512 bytes.
>          This option is only relevant for the open and resize actions.
>                                               ^^^^     ^^^^^^
>
> I do not see why this is apparently a surprise to some....

I was just pointing it out in the context of this thread, where it was
not previously mentioned as meaningless.

-- 
Bob Nichols     "NOSPAM" is really part of my email address.
                 Do NOT delete it.



More information about the dm-crypt mailing list