[linux-lvm] lvm snapshot cannot be removed with the error "Failed to refresh without snapshot"

[Gang He]

Hello Guys,

Any ideas? or what information do I need to provide to help this problem?

Thanks a lot.
Gang

>>> On 2019/6/19 at 17:26, in message
<5D09FFC9020000F90006D3D6 at prv1-mh.provo.novell.com>, "Gang He" <ghe at suse.com>
wrote:
> Hello List,
> 
> Our user is using lvm2-2.02.180, he attempted to remove a snapshot LV, but 
> failed with the below error,
> lvremove /dev/evg00/snap_var
>   WARNING: Failed to connect to lvmetad. Falling back to device scanning.
> Do you really want to remove active logical volume evg00/snap_var? [y/n]: y
>   device-mapper: reload ioctl on  (254:36) failed: Invalid argument
>   Failed to refresh var without snapshot.
> 
> But I can not reproduce in local, how do I find the root cause behind this 
> problem?
> I also can see one related error message in /var/log/messages
> Jun 12 09:00:22 gtunxlnb04864 sudo:   buss18 : TTY=pts/0 ; 
> PWD=/PZIR/users/buss18 ; USER=root ; COMMAND=/sbin/lvremove 
> /dev/evg00/snap_opt
> Jun 12 09:00:22 gtunxlnb04864 sudo[25821]: pam_unix(sudo:session): session 
> opened for user root by buss18(uid=0)
> Jun 12 09:00:22 gtunxlnb04864 kernel: [1492631.077551] device-mapper: ioctl: 
> can't change device type after initial table load.  <<== here
> Jun 12 09:00:22 gtunxlnb04864 sudo[25821]: pam_unix(sudo:session): session 
> closed for user root
> Jun 12 09:01:01 gtunxlnb04864 cron[25932]: pam_unix(crond:session): session 
> opened for user ggmonux1 by (uid=0)
> 
> Thanks
> Gang
> 
> 
> 
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