[CLOUDSTACK-5205] System vm startup scripts calculate jvm memory wrong

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Duplicate
• Affects Version/s: 4.2.0
• Fix Version/s: 4.3.0, 4.4.0
• Component/s: SystemVM
• Security Level: Public (Anyone can view this level - this is the default.)
• Assignee: Koushik Das
• Reporter: John E Vincent
• Created: 19/Nov/13 21:40
• Updated: 04/Jun/14 09:27
• Resolved: 04/Jun/14 09:27

Description

While attempting to provision beefier system vms, we discovered this bug.

The `_run.sh` script in the system vm calculates jvm memory based on 80% of the total memory on the system. This is great up until the point 80% of memory goes above ~1.9G. The system vm templates are all 32-bit and so calculating the size too high will cause the agent jvm to fail to start.

The fix is pretty simple with a final sanity check:

if [ $maxmem -gt 1900 ]
then
maxmem=1900
fi