Too big for 4GB card

Gustavo Niemeyer gustavo.niemeyer at canonical.com
Thu Mar 12 19:59:56 UTC 2015


For the time being, if anyone with such a small card, here is a
working image with 3.9e9 bytes:

https://s3.amazonaws.com/niemeyer/ubuntu-core-WEBDM-alpha-03_armhf-bbb.img.xz

On Wed, Mar 11, 2015 at 5:24 PM, Gustavo Niemeyer
<gustavo.niemeyer at canonical.com> wrote:
> Any of these would fix the issue for the card I have at hand, but I'm
> tempted to suggest the middle one (3.9e9).
>
> Thanks!
>
> On Wed, Mar 11, 2015 at 5:19 PM, Alexander Sack <asac at canonical.com> wrote:
>> On Wed, Mar 11, 2015 at 8:16 PM, Gustavo Niemeyer
>> <gustavo.niemeyer at canonical.com> wrote:
>>> The newest images seem to present the same issue still.
>>>
>>> Any chance/intention of fixing this?
>>
>> yes please!
>>
>> Michael/Sergio: can you make a trello card so we don't forget for next
>> milestone?
>>
>> Gustavo/All: what buffer should we use to make this safe?
>>
>> (4-0.05)*10^9 bytes?
>> (4-0.10)*10^9 bytes?
>> (4-0.20)*10^9 bytes?
>>
>> Any preference or maybe ideas how to find the perfect number? I tend
>> to think unless we have good ideas, we should rather add more buffer
>> to be safe :).
>>
>>>
>>> On Fri, Feb 13, 2015 at 1:04 AM, Gustavo Niemeyer
>>> <gustavo.niemeyer at canonical.com> wrote:
>>>> 4GiB would actually be 300MiB *over* 4*10^9 bytes, so the image is already
>>>> discounting that. The device I have is ~3.98*10^9 bytes.
>>>>
>>>> On Feb 13, 2015 1:03 AM, "Gustavo Niemeyer" <gustavo at niemeyer.net> wrote:
>>>>>
>>>>> 4GiB would actually be 300MiB *over* 4*10^9 bytes, so the image is already
>>>>> discounting that. The device I have is ~3.98*10^9 bytes.
>>>>>
>>>>> On Feb 13, 2015 12:25 AM, "Joe Talbott" <joe.talbott at canonical.com> wrote:
>>>>>>
>>>>>> On Thu, Feb 12, 2015 at 10:58:43PM -0200, Sergio Schvezov wrote:
>>>>>> > On jueves 12 de febrero de 2015 22h'25:51 BRST, Gustavo Niemeyer wrote:
>>>>>> > >Hey all,
>>>>>> > >
>>>>>> > >It would be good to reduce the snappy image size just a little bit.
>>>>>> > >I have a Kingston MicroSD card that self-reports as 4GB, but it
>>>>>> > >is not large enough to hold the image. I had to take a few MB
>>>>>> > >out from the last partition to make it work.
>>>>>> >
>>>>>> > I totally agree! I just haven't figured out what a "bit" is; I guess
>>>>>> > I we can be on the safe side and say 4GB is going to 3.9GB (-100MB
>>>>>> > to be on the safe side given the plethora of devices).
>>>>>> >
>>>>>> > Is that a good number?
>>>>>> >
>>>>>> > Ogra, you gave me a long explanation on variation; is +/-100MB a
>>>>>> > good σ expected on the population of sdcards around?
>>>>>>
>>>>>> It's my understanding that a lot of storage manufacturers use 1000 as
>>>>>> the number of bits per kilobyte rather than 1024.  I'd think -300MB would
>>>>>> suffice as that's roughly the difference between the two.
>>>>>>
>>>>>> Joe
>>>>>>
>>>>>> --
>>>>>> snappy-devel mailing list
>>>>>> snappy-devel at lists.ubuntu.com
>>>>>> Modify settings or unsubscribe at:
>>>>>> https://lists.ubuntu.com/mailman/listinfo/snappy-devel
>>>
>>>
>>>
>>> --
>>> gustavo @ http://niemeyer.net
>>>
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>
>
>
> --
> gustavo @ http://niemeyer.net



-- 
gustavo @ http://niemeyer.net



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