[Libguestfs] [libvirt-users] Resize errors with virt-resize/vgchange

[Alex]

Hi,

>> >> > # virt-resize -d --expand /dev/sda1 --LV-expand /dev/mapper/prop-home
>> >> > prop-1.img prop-expand.img
>> >> > command line: virt-resize -d --expand /dev/sda1 --LV-expand
>> >> > /dev/mapper/prop-home prop-1.img prop-expand.img
>> >> > Examining prop-1.img ...
>> >> > libguestfs: trace: add_drive "prop-1.img" "readonly:true"
>> >> > libguestfs: trace: add_drive = 0
>> >> > libguestfs: trace: add_drive "prop-expand.img" "readonly:false"
>> >> > libguestfs: trace: add_drive = 0
>> >> > libguestfs: trace: launch
>> >> > libguestfs: trace: get_tmpdir
>> >> > libguestfs: trace: get_tmpdir = "/tmp"
>> >> > libguestfs: trace: get_cachedir
>> >> > libguestfs: trace: get_cachedir = "/var/tmp"
>> >> > libguestfs: trace: disk_format "/var/lib/libvirt/images/prop-expand.img"
>> >> > libguestfs: trace: disk_format = "raw"
>> >> > libguestfs: trace: get_cachedir
>> >> > libguestfs: trace: get_cachedir = "/var/tmp"
>> >> > [...] 100% --:--
>> >> > libguestfs: trace: launch = 0
>> >> > libguestfs: trace: lvm_set_filter "/dev/sda"
>> >> > libguestfs: trace: lvm_set_filter = -1 (error)
>> >> > Fatal error: exception Guestfs.Error("lvm_set_filter: vgchange:
>> >> > Couldn't find device with uuid zouQ8X-qxqJ-mp6p-pzg3-mi2i-K9YM-A763Kc.
>> >> >   Refusing activation of partial LV home. Use --partial to override.
>> >> >   Refusing activation of partial LV swap. Use --partial to override.
>> >> >   R
>> >> > libguestfs: trace: close
>> >> > libguestfs: trace: internal_autosync
>> >> > libguestfs: trace: internal_autosync = 0
>> >> >
>> >> > I don't understand this error message. I also see that vgchange
>> >> > doesn't even have a 'partial' option, so I'm not sure how to
>> >> > troubleshoot it. Here is the filesystem layout for this system:
>> >
>> > Which version of libguestfs, and where did you install it from?
>>
>> It was installed via yum on fedora18:
>>
>> # rpm -qva|grep guest
>> libguestfs-tools-c-1.20.9-1.fc18.x86_64
>> libguestfs-tools-1.20.9-1.fc18.x86_64
>> libguestfs-1.20.9-1.fc18.x86_64
>
> OK, in that case it's (unfortunately) not what I was thinking it was :-(
>
> If you set:
>
>   export LIBGUESTFS_DEBUG=1
>
> before running virt-resize then you will get a huge amount of extra
> debugging, which could be very valuable.  If you post that lot
> somewhere it would be helpful.
>
> However it's definitely a bug of some sort.  I will open a Bugzilla
> bug later unless you get there first.

It's going to take me a bit of time to retest this with debugging
info. This happened during a production change window I was given for
this. I have the images backed up on another server for testing, but
will take me a day or two. I'd appreciate it if you would open the bug
to get us started and in front of some other people...

Come to think of it, considering it's a bug, how are other people
resizing VMs with LVM partitions? Should I plan to find an alternate
method to do this?

Thanks,
Alex