En ocasiones os podeis encontrar que no hay manera de hacer backups, migrar, clonar containers.
Cuando esto sucede generalmente se debe a un problema que existe en ciertas versiones que hace que la funciona checkpoint se degrade.
Cuando esto pasa al hacer un df -h dentro del container os encontrareis el vzfs montado mas veces de las que corresponderia.
Para verificar sin mas impacto que el problema que os afecta es este podeis hacer un:
vzctl suspend
vzctl resume
Hecho esto va bien es que el problema que teneis es otro, si da error teneis el problema del que hablo. Ahora solo teneis que hacer un vzctl restart
/
[root@hn5 ~]# vzmigrate –online -r no root@xxxxx 246101root@xxxxxxx’s password:
Connection to destination node (root@xxxxxxx) is successfully established
Moving/copying CT#246101 -> CT#246101, [], [] …
Checking external bind mounts
Check cluster ID
Checking keep dir for private area copy
Checking SLM-only mode
Checking capabilities for online migration
Checking license restrictions
Checking technologies
Checking disk usage space
Checking templates for CT
copy ez template area directories
copy /vz/template/centos/5/x86_64
Checking caches
Checking IP addresses on destination node
Check target CT name: xxxxxxxx
Checking RATE parameters in config
Tracker started
Copy private area ‘/vz/private/246101’
done
OfflineManagement CT#246101 …
done
Suspending CT#246101 …
done
Dumping CT#246101 …
vzctl : Can not dump Container: Invalid argument
vzctl : Error: d_path is invisible /var/named/run-root/proc
vzctl : Checkpointing of Container failed
vzctl failed, exitcode=16
can not dump CT#246101 : vzctl failed, exitcode=16
This CT can’t be migrated online at the moment. Try offline migration.
can not stop/umount CT#246101 : vzctl failed, exitcode=16
Can’t move/copy CT#246101 -> CT#246101, [], [] : can not stop/umount CT#246101 : vzctl failed, exitcode=16
Resuming CT#246101 …
done
OfflineManagement CT#246101 …
done
[root@hn5 ~]# uname -a
Linux hn5.kaosredes.com 2.6.18-028stab053.17 #1 SMP Mon Jun 9 20:42:43 MSD 2008 x86_64 x86_64 x86_64 GNU/Linux
[root@hn5 ~]# vzctl suspend 246101
Setup checkpoint …
Can not dump Container: Invalid argument
Error: d_path is invisible /var/named/run-root/proc
Checkpointing of Container failed
[root@hn5 ~]# vzctl enter 246101
entered into Container 246101
-bash-3.2# df -h
S.ficheros Tamaño Usado Disp Uso% Montado en
vzfs 10G 2,1G 8,0G 21% /
none 3,0G 4,0K 3,0G 1% /dev
vzfs 10G 2,1G 8,0G 21% /var/named/run-root/var/run/dbus
vzfs 10G 2,1G 8,0G 21% /var/named/run-root/var/run/dbus
vzfs 10G 2,1G 8,0G 21% /var/named/run-root/var/run/dbus
-bash-3.2# exit
logout
exited from Container 246101
[root@hn5 ~]# vzctl restart 246101
Restart Container
Stopping Container …
Container was stopped
Container is unmounted
Starting Container …
Container is mounted
Setup slm memory limit
Setup slm subgroup (default)
Setting devperms 20002 dev 0x7d00
Setup ioprio: 4
Adding port redirection to Container(1): 4643 8443
Adding IP address(es) to pool:
Adding IP address(es): xxxxxxxxxx
Hostname for Container set: xxxxxxxxxxxxx
File resolv.conf was modifiedContainer start in progress…
[root@hn5 ~]# vzctl suspend 246101
Setup checkpoint …
Container is unmounted
Checkpointing completed succesfully
[root@hn5 ~]# vzctl resume 246101
Starting Container …
Container is mounted
Setup slm memory limit
Setup slm subgroup (default)
Set cpus: 1
Setup ioprio: 4
Adding port redirection to Container(1): 4643 8443
Adding IP address(es) to pool:
Adding IP address(es): xxxxxxx
Container start in progress…
[root@hn5 ~]# vzctl enter 246101
entered into Container 246101
-bash-3.2# df -h
S.ficheros Tamaño Usado Disp Uso% Montado en
vzfs 10G 2,1G 8,0G 21% /
none 3,0G 4,0K 3,0G 1% /dev
vzfs 10G 2,1G 8,0G 21% /var/named/run-root/var/run/dbus
-bash-3.2# exit
logout