Hello, While playing with Ganeti and using KVM as the hypervisor, this error occurred:
r...@node01:~# gnt-instance modify -B memory=512M prcolor Failure: prerequisites not met for this operation: error type: insufficient_resources, error details: This change will prevent the instance from starting, due to 107 MB of memory missing on its primary node Then checking the correspondent primary node, I was playing manually with KVM there and messing around with hugetlbfs. As I've reserved a lot of RAM to hugepages, there was actually no room to accommodate the instance (it was down previously). It appears to me that Ganeti is not counting free hugepages as free memory (I've greped the code). Plus, I could not find a way to pass the parameter -mem-path to actually use the allocated hugepages for the instance on the primary node. Regards, Miguel
