[linux-lvm] lvresize cannot refresh LV size on on other hosts when extending LV with a shared lock

[Gang He]

Hi David,

Thank for your helps.

On 9/29/2020 10:02 PM, David Teigland wrote:
> On Tue, Sep 29, 2020 at 08:46:25AM +0000, Gang He wrote:
>> ghe-tw-nd1# lvresize -L+1024M vg1/lv1
>>    WARNING: extending LV with a shared lock, other hosts may require LV refresh.
>>    Size of logical volume vg1/lv1 changed from 13.00 GiB (3328 extents) to 14.00 GiB (3584 extents).
>>    Logical volume vg1/lv1 successfully resized.
>>    Refreshing LV /dev//vg1/lv1 on other hosts...
> 
> Triggering remote lvchange refresh for lvresize has been implemented using
> dlm_controld.  See configure --enable-lvmlockd-dlmcontrol which enables
> lvmlockd to use the libdlmcontrol api dlmc_run_start/dlm_run_check.
> Dave
That means LV size will be refreshed automatically if this configure 
option is enabled, right?
If we do not enable this configure option, we can use "lvchange 
--refresh vg/lv" on the other nodes to synchronize LV size, right?
This command will affect the upper cluster file system if it is running?

Thanks
Gang