Symptoms
CPU autoscale does not work for a VE, its History is flooded with events:
Autoscale failed
The VE was recently created or migrated to another node.
The following error can be found repetitively in /var/log/parallels.log on the node:
GetDiskAvailableSpace(/var/parallels) failed : 0x80000324 PRL_ERR_INCORRECT_PATH
/var/parallels is configured as a link to a non-existent location:
[root@vz01 ~]# ls -alh /var/parallels
lrwxrwxrwx 1 root root 27 May 25 21:37 /var/parallels -> /pstorage/cluster01/vmprivate
[root@vz01 ~]# ls /pstorage/cluster01/vmprivate
ls: cannot access /pstorage/cluster01/vmprivate: No such file or directory
Cause
Misconfigured symbolic link for /var/parallels directory prevents the collection of available disk space statistics by OACI, which breaks autoscaling.
Resolution
Correct the symbolic link to point to the actual VM storage location:
[root@vz01 ~]# unlink /var/parallels
[root@vz01 ~]# ln -s /pcs/vmprivate /var/parallels
[root@vz01 ~]# ls -alh /var/parallels
lrwxrwxrwx 1 root root 14 Oct 25 23:59 /var/parallels -> /pcs/vmprivate