Libguestfs - Jul 2013 - Re: [libvirt-users] Resize errors with virt-resize/vgchange

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

Thanks so much,
Alex

On Tue, Jul 23, 2013 at 03:10:07PM -0400, Alex wrote:
> 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.

Rich.

-- 
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
virt-top is 'top' for virtual machines.  Tiny program with many
powerful monitoring features, net stats, disk stats, logging, etc.
http://people.redhat.com/~rjones/virt-top

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