[linux-lvm] lvm Bug? - bad reaction to snapshot creation

Leeman Strout me at mooluv.com
Mon Jun 9 14:53:45 UTC 2014

On 06/09/2014 05:50 AM, Zdenek Kabelac wrote:
> Dne 7.6.2014 01:26, Leeman Strout napsal(a):
> Hi
> Unsure if this relates to all your problem (since I'm not sure how
> arch linux is in sync with udev rules & systemd version)
> At certain moment systemd added a new 'feature' about locking
> devices while updating internal udev state - this locking ignores any
> udev rule flags and opens internal lvm2 devices - so while for now
> it's been again disabled for 'dm' devices - you might have installed
> version of system which has the 'lock everything' feature in?
systemd 213-6 is what Arch reports, as far as I can tell from the 
PKGBUILD it's vanilla 213 plus 2 patches:
- backport fix for faily MACAddress matching (FS#40675)
- backport fix for fsck/udev mess (FS#40706)

Do you have links to discussion of this feature or bugs pertaining to it?

> Thought this doesn't explain your 'counter below zero' error - this
> looks like some incorrect udev rules are running in the field ? (Or
> maybe multiple systemd-udevd are running ?)
After a clean restart of everything twice without doing snapshots, the 
initial lvcreate does not have the 'counter below zero' error.  And with 
special attention to make sure the snapshots are cleaned up prior to 
attempting a new snapshot I am not getting this initial decrement on 


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