Nova not updating to new size of an extended in-use / attached cinder volume (Ceph RBD) to guest
Christian Rohmann
christian.rohmann at inovex.de
Tue Feb 16 21:32:05 UTC 2021
Hello Lee,
thanks for quick response and sorry about the late reaction from my side.
On 15/02/2021 12:18, Lee Yarwood wrote:
> On 15-02-21 00:52:52, Christian Rohmann wrote:
>> So I was simply wondering if this is expected to be working?
>> Are there any special settings / options I need to set to enable this
>> feature?
> Yes this should work without any additonal changes, can you write up
> a nova bug with the following output in addition to the bug template:
>
> - Your versions of libvirt and QEMU.
>
> - Output of the following command *after* requesting a resize:
>
> $ virsh domblkinfo $instance_uuid $target_dev
>
> - Output of the following commands once confirmed the resize didn't
> happen within the domain:
>
> $ virsh blockresize $instance_uuid $rbd_path $new_size
> $ virsh domblkinfo $instance_uuid $target_dev
>
> From what you've said above this smells like a libvirt/QEMU bug but I
> don't have a rbd env to hand to confirm things at the moment.
>
> Cheers,
>
I have just been trying to reproduce the issue, but in all my new
attempts it just worked as expected:
> [162262.926512] sd 0:0:0:1: Capacity data has changed
> [162262.932868] sd 0:0:0:1: [sdb] 6291456 512-byte logical blocks:
> (3.22 GB/3.00 GiB)
> [162262.933061] sdb: detected capacity change from 2147483648 to
> 3221225472
Sorry about the noise then.
The only "bugs" to report are the usability issues of Horizon not
offering "in-use" extension of volume as far as I can see and the
pending support in the openstack cli
(https://bugs.launchpad.net/cinder/+bug/1871759).
Thanks again,
Regards
Christian
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