Re: root filesystem resizeing at boot time

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On Fri, May 3, 2013 at 4:20 PM, seth vidal <skvidal@xxxxxxxxxxxxxxxxx> wrote:
> On Fri, 3 May 2013 09:24:09 -0400 (EDT)
> Attila Fazekas <afazekas@xxxxxxxxxx> wrote:
>
>> Hi All,
>>
>> Openstack is able to boot the same image with different disk sizes.
>> The instance's disk size is depends on the selected flavor type.
>> With the default flavor types you can have 20Gib(m1.small), 40Gib
>> (m1.medium), 80Gib (m1.large), 160 GiB (m1.xlarge) Disk sizes.
>>
>> I am looking for an OpenStack friendly Fedora image which is able to
>> utilize all space on the first disk(vda), without any additional
>> manual steps. The file system should be ready for use before I login
>> to the instance.
>>
>> According to this presentation
>> http://www.slideshare.net/openstack/os-summit-portlandimages, the
>> best time for resizing the file systems is at the initrd time.
>>
>> All Fedora jeos images I tried so far just uses maximum 10 GiB even
>> on a 160 GiB disk after the first boot. I would like to use the same
>> image for all disk sizes.
>>
>> Do you know about a working auto-resize capable Fedora Image ?
>>
>
> There is a package called cloud-utils-initramfs which does this in the
> initramfs.
> https://bugzilla.redhat.com/show_bug.cgi?id=916087
>
> it should be trickling in and I hope will be into the imgs soon.

I hope to get it into testing this week. Note that cloud-init trunk
now supports resizing of the root partition and filesystem outside of
initrd (requires a >= 3.8 kernel):

------------------------------------------------------------
revno: 790 [merge]
committer: Scott Moser <smoser@xxxxxxxxxx>
branch nick: trunk
timestamp: Tue 2013-03-05 16:39:23 -0500
message:
  add 'growpart' config module.

  This adds support for resizing partition tables for mounted partitions.
  It thus allows us to remove 'cloud-initramfs-growpart' from running in
  the initramfs, and do it here instead.

  That depends on:
   a.) growpart in cloud-utils 0.2.7 or later
       or
       parted with 'resizepart' support
   b.) kernel 3.8.
------------------------------------------------------------


...Juerg


> does this help?
>
> -sv
>
>
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