[clue] Whack-a-disk

[Dan Kulinski]

Interesting insight on Expect and I can see why you are coming from that
angle.  Quite honestly I use expect on very standard deployments and the
behavior should be routine on all nodes.  I think expect is a good tool
when used correctly.


On Tue, Jul 29, 2014 at 1:41 PM, Chris Fedde <chris at fedde.us> wrote:

> 1: Is there a problem using a GPT on a disk smaller than 2T?
> 2: You don't want to know expect.  Writing reliable code in expect that
> deals properly with failure modes is painful and requires silly,
> non-obvious timeout logic.
>
>
> On Tue, Jul 29, 2014 at 1:30 PM, Shawn Perry <shawn at redmop.com> wrote:
>
>> Seconded.  Crashplan via puppet would be sexy.
>>
>>
>> On Tue, Jul 29, 2014 at 1:28 PM, David L. Willson <DLWillson at thegeek.nu>
>> wrote:
>>
>>> But now I demand that you teach an expect scripting class for SFS or
>>> CLUE, I mean. :-)
>>>
>>> Not that I have any right, but I can try.
>>>
>>>
>>> --
>>> David L. Willson
>>> Teacher, Engineer, Evangelist
>>> RHCE+Satellite CCAH Network+ A+ Linux+ LPIC-1 UbuntuCP NovellCLA
>>> Mobile 720-333-LANS(5267)
>>> http://sofree.us
>>>
>>> This is a good time for a r3VOLution.
>>>
>>> ------------------------------
>>>
>>> Thanks for sharing, this will work well with my cloud deployment and
>>> puppet to automatically assemble a Lustre file system.  No more expect
>>> script!
>>>
>>>
>>> On Tue, Jul 29, 2014 at 1:25 PM, David L. Willson <DLWillson at thegeek.nu>
>>> wrote:
>>>
>>>> Tried that. No dice. Actually what you said is how I used to do it, but
>>>> I was always annoyed by having to go interactive. If I'm going to go
>>>> interactive, I'm using cfdisk, because the interface is more pretty / less
>>>> suckful.
>>>>
>>>> I always wanted non-interactive and *perfect*. I finally figured out
>>>> how to get it today.
>>>>
>>>>
>>>> --
>>>> David L. Willson
>>>> Teacher, Engineer, Evangelist
>>>> RHCE+Satellite CCAH Network+ A+ Linux+ LPIC-1 UbuntuCP NovellCLA
>>>> Mobile 720-333-LANS(5267)
>>>> http://sofree.us
>>>>
>>>> This is a good time for a r3VOLution.
>>>>
>>>> ------------------------------
>>>>
>>>> Oh, I do this from the parted command line, not as an argument to
>>>> parted directly.  I wonder if you surround it with quotes?
>>>>
>>>>
>>>> On Tue, Jul 29, 2014 at 1:19 PM, David L. Willson <DLWillson at thegeek.nu
>>>> > wrote:
>>>>
>>>>> Interesting. Trying your switches, I'm getting that 0 is an invalid
>>>>> argument. It seems to think that by "-0" I mean to specify a switch, not a
>>>>> parameter to the mkpart.
>>>>>
>>>>>
>>>>> --
>>>>> David L. Willson
>>>>> Teacher, Engineer, Evangelist
>>>>> RHCE+Satellite CCAH Network+ A+ Linux+ LPIC-1 UbuntuCP NovellCLA
>>>>> Mobile 720-333-LANS(5267)
>>>>> http://sofree.us
>>>>>
>>>>> This is a good time for a r3VOLution.
>>>>>
>>>>> ------------------------------
>>>>>
>>>>> For aligned disks I general do:
>>>>> mkpart primary 1 -0
>>>>> I suspect that is sector aligned and not cylinder aligned?
>>>>>
>>>>>
>>>>> On Tue, Jul 29, 2014 at 12:51 PM, David L. Willson <
>>>>> DLWillson at thegeek.nu> wrote:
>>>>>
>>>>>> How can I quickly and simply wipe and re-partition a disk from a
>>>>>> script?
>>>>>>
>>>>>> Here's a proposal, using sdc as the example.
>>>>>>
>>>>>> # Quickly wipe the head of the disk.
>>>>>> sudo dd if=/dev/zero of=/dev/sdc bs=16MB count=1
>>>>>>
>>>>>> # Create a new, basic partition table. Good for up to 2TB.
>>>>>> sudo parted /dev/sdc mklabel msdos
>>>>>>
>>>>>> # If you have a disk larger than 2TB, use this instead.
>>>>>> # sudo parted /dev/sdc mklabel gpt
>>>>>>
>>>>>> # Create a new, cylinder-aligned, primary partition, the full size of
>>>>>> the disk
>>>>>> sudo parted --align cylinder /dev/sdc mkpart primary 0% 100%
>>>>>>
>>>>>> The most interesting part might be that last line. I found many posts
>>>>>> by people looking for a way to create a partition using parted
>>>>>> non-interactively that is the full size of the disk and "properly aligned
>>>>>> for best performance", but I didn't find anyone giving the answer. So... So
>>>>>> that.
>>>>>>
>>>>>> --
>>>>>> David L. Willson
>>>>>> Teacher, Engineer, Evangelist
>>>>>> RHCE+Satellite CCAH Network+ A+ Linux+ LPIC-1 UbuntuCP NovellCLA
>>>>>> Mobile 720-333-LANS(5267)
>>>>>> http://sofree.us
>>>>>>
>>>>>> This is a good time for a r3VOLution.
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>>>>>
>>>>>
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