[Users] Cannot Allocate Memory after suspend / resume

[Robert Heinzmann]

Hello, 

I'm trying to use the following mechanism to transparently move machines
from one server to another. 

.. machine in /vz/ID/private and /vz/ID/root mounted as LVM LV 

1) Suspend the machine (dumpfile /vz/ID/ID.dump)
2) Umount Filesystem (/vz/ID)
3) Create DRBD Device of /vz/ID (external Meta Data)
4) Start and mount the DRBD (/vz/ID)
5) resume the Machine

.. Wait for sync to finish
... Other actions 

After resume, the machine has this in the logs: 

Jun 15 14:27:01 test4 CRON[2268]: PAM unable to
dlopen(/lib/security/pam_unix.so)
Jun 15 14:27:01 test4 CRON[2268]: PAM [dlerror:
/lib/security/pam_unix.so: failed to map segment from shared object:
Cannot allocate memory]
Jun 15 14:27:01 test4 CRON[2268]: PAM adding faulty module:
/lib/security/pam_unix.so
Jun 15 14:27:01 test4 CRON[2268]: PAM unable to
dlopen(/lib/security/pam_env.so)
Jun 15 14:27:01 test4 CRON[2268]: PAM [dlerror:
/lib/security/pam_env.so: failed to map segment from shared object:
Cannot allocate memory]
Jun 15 14:27:01 test4 CRON[2268]: PAM adding faulty module:
/lib/security/pam_env.so
Jun 15 14:27:01 test4 CRON[2268]: PAM unable to
dlopen(/lib/security/pam_limits.so)
Jun 15 14:27:01 test4 CRON[2268]: PAM [dlerror:
/lib/security/pam_limits.so: failed to map segment from shared object:
Cannot allocate memory]
Jun 15 14:27:01 test4 CRON[2268]: PAM adding faulty module:
/lib/security/pam_limits.so
Jun 15 14:27:01 test4 CRON[2270]: PAM unable to
dlopen(/lib/security/pam_unix.so)

But no beancounters are hit: 

test4:/# cat /proc/user_beancounters
Version: 2.5
       uid  resource                     held              maxheld
barrier                limit              failcnt
       36:  kmemsize                  3243909              5416555
84172801            100000000                    0
            lockedpages                     0                    0
8182                 8182                    0
            privvmpages                 84088                91852
512000               640000                    0
            shmpages                       13                   14
256000               256000                    0
            dummy                           0                    0
0                    0                    0
            numproc                        35                   61
1000                 1000                    0
            physpages                    8127                13348
0  9223372036854775807                    0
            vmguarpages                     0                    0
512000  9223372036854775807                    0
            oomguarpages                 8127                13348
512000  9223372036854775807                    0
            numtcpsock                     13                   15
1200                 1200                    0
            numflock                        5                   10
1000                 1000                    0
            numpty                          2                    2
8                    8                    0
            numsiginfo                      0                    2
1024                 1024                    0
            tcpsndbuf                  247992               247992
12000000             24000000                    0
            tcprcvbuf                  212992                    0
12000000             24000000                    0
            othersockbuf                13872                61592
6000000             12000000                    0
            dgramrcvbuf                     0                 2576
512000               512000                    0
            numothersock                   21                   45
1200                 1200                    0
            dcachesize                 142728               253530
12000000             24000000                    0
            numfile                       672                 1144
20000                20000                    0
            dummy                           0                    0
0                    0                    0
            dummy                           0                    0
0                    0                    0
            dummy                           0                    0
0                    0                    0
            numiptent                    1245                 1245
2000                 2000                    0


This is a strange behaviour. 

Operating System: 
 Host		: Debian Lenny 64 Bit
 Guest/ VE 	: Debian Etch 32 Bit

Host: 

HOST:~/deploy# dpkg -l | grep -e openvz -e vzctl
ii  drbd8-module-2.6.26-2-openvz-amd64         2:8.3.1-0+2.6.26-15lenny2
RAID 1 over tcp/ip for Linux kernel module
ii  libopenvz-bc-perl                          0.02-1
Perl access to OpenVZ Beancounter Data
ii  linux-headers-2.6-openvz-amd64             2.6.26+17+lenny1
Header files for Linux 2.6-openvz-amd64
ii  linux-headers-2.6.26-2-common-openvz       2.6.26-15lenny3
Common header files for Linux 2.6.26-2-openv
ii  linux-headers-2.6.26-2-openvz-amd64        2.6.26-15lenny3
Header files for Linux 2.6.26-2-openvz-amd64
ii  linux-image-2.6-openvz-amd64               2.6.26+17+lenny1
Linux 2.6 image on AMD64, OpenVZ support
ii  linux-image-2.6.26-2-openvz-amd64          2.6.26-15lenny3
Linux 2.6.26 image on AMD64, OpenVZ support
...
ii  vzctl                                      3.0.22-14
server virtualization solution - control too
ii  vzquota                                    3.0.11-1
server virtualization solution - quota tools

How can I debug ? 

Does the suspend also contain file handle information  ? 

Is it possible to move a machine in suspended state to a different
location ? 

Any hints appreshiated ....

Regards, 
Robert 

---
Robert Heinzmann