[ClusterLabs] Notifications on changes in clustered LVM

[Andrei Borzenkov]

20.06.2017 02:15, Digimer пишет:
> On 19/06/17 06:59 PM, Ferenc Wágner wrote:
>> Digimer <lists at alteeve.ca> writes:
>>
>>> So we have a tool that watches for changes to clvmd by running
>>> pvscan/vgscan/lvscan, but this seems to be expensive and occassionally
>>> cause trouble.
>>
>> What kind of trouble did you experience?
>>
>>> Is there any other way to be notified or to check when something
>>> changes?
>>
>> LV (de)activation generates udev events (due to block devices appearing/
>> disappearing).  PVs too, but they don't go though clvmd.
>>
> 
> Interesting (dbus), I'll look into that.
> 

udev events are sent over netlink, not D-Bus.