vgrename omit renaming hidden volumes if vg is inactive -> thinpools will be inconsistent

vgrename omit renaming hidden volumes if vg is inactive -> thinpools will be inconsistent

[Oliver Rath]

Hi list,

ive probably found a bug in lvm2 (testet on commit hash
6320c3b9052004397faf1687198756ac7914fecc):

if i rename an inactive vg (vgchange -an vg), then the hidden volumes
like /dev/mapper/vg-mypool_tdata ..tmeta ..tpool arent renamed in
/dev/mapper/..

If this is fixed in 2.02.109, Im sorry, wasnt able to test this at the
moment.

Regards
Oliver

vgrename omit renaming hidden volumes if vg is inactive -> thinpools will be inconsistent

[Peter Rajnoha]

On 08/07/2014 09:40 PM, Oliver Rath wrote:
> Hi list,
> 
> ive probably found a bug in lvm2 (testet on commit hash
> 6320c3b9052004397faf1687198756ac7914fecc):
> 
> if i rename an inactive vg (vgchange -an vg), then the hidden volumes
> like /dev/mapper/vg-mypool_tdata ..tmeta ..tpool arent renamed in
> /dev/mapper/..
> 

Inactive VG should not have any /dev/ content. If it remained after
deactivation, it seems to be a bug in node/symlink handling under /dev.

A few questions then:

  - what distro is this?
  - are you using udev rules from lvm2 git repo too?
  - what are the lvm.conf values for these settings:
      - activation/udev_sync
      - activation/udev_rules
      - activation/verify_udev_operations
  - what udev (or systemd+udev) version is being used
  - are all the items found in /dev/mapper symlinks (not direct block dev nodes)?
  - are there dangling symlinks found in /dev/mapper for the LVs from deactivated VG?

-- 
Peter

vgrename omit renaming hidden volumes if vg is inactive -> thinpools will be inconsistent

[Oliver Rath]

Hi Peter!

Am 08.08.2014 um 08:26 schrieb Peter Rajnoha:
> On 08/07/2014 09:40 PM, Oliver Rath wrote:
>> Hi list,
>>
>> ive probably found a bug in lvm2 (testet on commit hash
>> 6320c3b9052004397faf1687198756ac7914fecc):
>>
>> if i rename an inactive vg (vgchange -an vg), then the hidden volumes
>> like /dev/mapper/vg-mypool_tdata ..tmeta ..tpool arent renamed in
>> /dev/mapper/..
>>
> Inactive VG should not have any /dev/ content. If it remained after
> deactivation, it seems to be a bug in node/symlink handling under /dev.
>
> A few questions then:
>
>   - what distro is this?
Ubuntu 14.04.1 Server amd64 + ubuntu-desktop + lvm2-2.02.106 from git +
thin-provisioning-tools-0.3.2 from git

>   - are you using udev rules from lvm2 git repo too?
Yes
>   - what are the lvm.conf values for these settings:
>       - activation/udev_sync
yes
>       - activation/udev_rules
yes
>       - activation/verify_udev_operations
yes
>   - what udev (or systemd+udev) version is being used
>   - are all the items found in /dev/mapper symlinks (not direct block dev nodes)?
>   - are there dangling symlinks found in /dev/mapper for the LVs from deactivated VG?
>
udev-204-5ubuntu2

Im using thinpool-devices from a 700MB thinpool-device.

If you need more, tell me!

Tfh
Oliver

configuration details [was Re: vgrename omit renaming hidden volumes if vg is inactive -> thinpools will be inconsistent]

[Oliver Rath]

Hi Peter,

lvm2 was compiled in this way:

 ./configure \
      --with-thin=internal \
      --with-replicators=internal \
      --enable-udev_sync \
      --enable-udev_rules \
      --enable-python-bindings \
      --enable-applib \
      --enable-cmdlib 

make && make install

Regards
Oliver

On 08.08.2014 10:51, Oliver Rath wrote:
> Hi Peter!
>
> Am 08.08.2014 um 08:26 schrieb Peter Rajnoha:
>> On 08/07/2014 09:40 PM, Oliver Rath wrote:
>>> Hi list,
>>>
>>> ive probably found a bug in lvm2 (testet on commit hash
>>> 6320c3b9052004397faf1687198756ac7914fecc):
>>>
>>> if i rename an inactive vg (vgchange -an vg), then the hidden volumes
>>> like /dev/mapper/vg-mypool_tdata ..tmeta ..tpool arent renamed in
>>> /dev/mapper/..
>>>
>> Inactive VG should not have any /dev/ content. If it remained after
>> deactivation, it seems to be a bug in node/symlink handling under /dev.
>>
>> A few questions then:
>>
>>   - what distro is this?
> Ubuntu 14.04.1 Server amd64 + ubuntu-desktop + lvm2-2.02.106 from git +
> thin-provisioning-tools-0.3.2 from git
>
>>   - are you using udev rules from lvm2 git repo too?
> Yes
>>   - what are the lvm.conf values for these settings:
>>       - activation/udev_sync
> yes
>>       - activation/udev_rules
> yes
>>       - activation/verify_udev_operations
> yes
>>   - what udev (or systemd+udev) version is being used
>>   - are all the items found in /dev/mapper symlinks (not direct block dev nodes)?
>>   - are there dangling symlinks found in /dev/mapper for the LVs from deactivated VG?
>>
> udev-204-5ubuntu2
>
> Im using thinpool-devices from a 700MB thinpool-device.
>
> If you need more, tell me!
>
> Tfh
> Oliver
>
> --
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