[lxc-users] LXC, criu and cgroups...

[Dirk Geschke]

Hi Tycho,

the process list is interesting. On the source host I see:

   root      4653  0.7  0.6  93844 14248 pts/1    Sl+  22:06   0:06 lxd --debug --group lxcuser --tcp 192.168.1.233:8443
   root      4725  1.8  0.5 108416 12196 pts/1    S+   22:06   0:16 rsync -arvPz --devices --partial /var/lib/lxd/lxc/ubuntix/rootfs/ localhost:/tmp/foo -e sh -c "nc -U /var/tmp/lxd_rsync_915745248"
   root      4727  0.0  0.0   4192   508 pts/1    S+   22:06   0:00 sh -c nc -U /var/tmp/lxd_rsync_915745248 localhost rsync --server -vlogDtprze.iLsf --partial . /tmp/foo
   root      4728  0.0  0.0   8724   584 pts/1    S+   22:06   0:00 nc -U /var/tmp/lxd_rsync_915745248

and on the target host:

   root     13155  1.0  0.4 109140 14180 pts/1    Sl+  22:06   0:10 lxd --debug --group lxcuser --tcp 192.168.1.234:8443
   root     13234  0.0  0.1  78268  3820 pts/1    S+   22:06   0:00 rsync --server -vlogDtprze.iLsfx --devices --partial .  /var/lib/lxd/lxc/ubuntix/rootfs/
   root     13235  0.3  0.1 100140  3748 pts/1    S+   22:06   0:03 rsync --server -vlogDtprze.iLsfx --devices --partial .  /var/lib/lxd/lxc/ubuntix/rootfs/

And this hungs now for several minutes.

I'm not sure, but maybe it is related to the rowhammer fix?

   Apr  7 22:06:04 otto kernel: [  205.054216] The pagemap bits 55-60 has changed their meaning! See the linux/Documentation/vm/pagemap.txt for details.
   Apr  7 22:06:04 otto kernel: [  205.054269] Bits 55-60 of /proc/PID/pagemap entries are about to stop being page-shift some time soon. See the linux/Documentation/vm/pagemap.txt for details.

Best regards 

Dirk

-- 
+----------------------------------------------------------------------+
| Dr. Dirk Geschke       / Plankensteinweg 61    / 85435 Erding        |
| Telefon: 08122-559448  / Mobil: 0176-96906350 / Fax: 08122-9818106   |
| dirk at geschke-online.de / dirk at lug-erding.de  / kontakt at lug-erding.de |
+----------------------------------------------------------------------+