> "It is not required for normal usage"
The fact is that the X79-based computer does not offer a login possibility,
it goes to disk scanning (kernel et al) for hours (at least 4hr).
Access to file was only possible from a LAN-connected other computer
(laptop VAIO) or booting from Super Grub2 disk.
Whether all issues arise from inability to connect to lvmetad, I cannot
say. I am no system analyzer. I merely need the X79-GPU-based machine for
applications (molecular dynamics with recent CUDA).
On Fri, May 19, 2017 at 10:24 AM, Darac Marjal <mailingl...@darac.org.uk>
> On Fri, May 19, 2017 at 10:17:44AM +0200, Francesco Pietra wrote:
>> On a vintage VAIO I have no problems with amd64 stretch. With a
>> raid1-based on the X79 chip, upgrading from jessie to stretch (I need
>> a higher CUDA version than available on jessie for latest
>> experimental NAMD molecular dynamics) went on regularly. However, the
>> # systemctl set-default multi-user.target
>> (which worked fine on said VAIO to boot at the $ linux prompt) led to
>> failure to connect to lvmetad, falling back to device scanning,
>> whereby an endless disk scanning begun.
>> I tried:
>> 1) Super grub2 disk: OK it led to clean boot but I found no way to
>> fix the problem.
>> 2) Accessing the X79 computer from said VAIO (both are on a LAN)
>> equally allowed to manage everything but I was unable to fix the
>> 3) From said VAIO:
>> # systemctl enable lvm2-lvmetad.service
>> OK, but it was lost on needed reboot.
>> I never had to reinstall a debian amd64 but this time I am lost.
>> Thanks for any kind suggestion
> Have you enabled the daemon in lvm.conf? Look for "use_lvmetad".
> However, I think this should not be a problem. lvmetad is the LVM
> Metadata Daemon, which is primarily a caching daemon. If you have a lot
> of disks, or change your logical volumes frequently, the lvmetad can
> speed up the varioud LVM commands. It is not required for normal usage
> and ~99% of people can ignore the "failure to connect" message.
>> francesco pietra
> For more information, please reread.