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https://github.com/GNS3/gns3-server
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Send a warning notification if there is not enough RAM left to start a VM. Implements #329.
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c700804014
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@ -21,6 +21,8 @@ import aiohttp
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import shutil
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import asyncio
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import tempfile
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import psutil
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import platform
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from pkg_resources import parse_version
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from ..utils.asyncio import wait_run_in_executor
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@ -309,3 +311,20 @@ class BaseVM:
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"""
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return self._hw_virtualization
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def check_available_ram(self, requested_ram):
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"""
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Sends a warning notification if there is not enough RAM on the system to allocate requested RAM.
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:param requested_ram: requested amount of RAM in MB
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"""
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available_ram = int(psutil.virtual_memory().available / (1024 * 1024))
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percentage_left = psutil.virtual_memory().percent
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if requested_ram > available_ram:
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message = '"{}" requires {}MB of RAM to run but there is only {}MB - {}% of RAM left on "{}"'.format(self.name,
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requested_ram,
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available_ram,
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percentage_left,
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platform.node())
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self.project.emit("log.warning", {"message": message})
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@ -247,6 +247,10 @@ class Router(BaseVM):
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if elf_header_start != b'\x7fELF\x01\x02\x01':
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raise DynamipsError('"{}" is not a valid IOS image'.format(self._image))
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# check if there is enough RAM to run
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if not self._ghost_flag:
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self.check_available_ram(self.ram)
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yield from self._hypervisor.send('vm start "{name}"'.format(name=self._name))
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self.status = "started"
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log.info('router "{name}" [{id}] has been started'.format(name=self._name, id=self._id))
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@ -492,6 +492,9 @@ class IOUVM(BaseVM):
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self._create_netmap_config()
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self._push_configs_to_nvram()
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# check if there is enough RAM to run
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self.check_available_ram(self.ram)
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# created a environment variable pointing to the iourc file.
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env = os.environ.copy()
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@ -849,6 +849,9 @@ class QemuVM(BaseVM):
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except OSError as e:
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raise QemuError("Could not find free port for the Qemu monitor: {}".format(e))
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# check if there is enough RAM to run
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self.check_available_ram(self.ram)
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self._command = yield from self._build_command()
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command_string = " ".join(shlex.quote(s) for s in self._command)
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try:
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@ -202,6 +202,9 @@ class VirtualBoxVM(BaseVM):
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yield from self._set_network_options()
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yield from self._set_serial_console()
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# check if there is enough RAM to run
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self.check_available_ram(self.ram)
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args = [self._vmname]
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if self._headless:
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args.extend(["--type", "headless"])
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@ -419,6 +419,9 @@ class VMwareVM(BaseVM):
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yield from self._start_ubridge()
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self._read_vmx_file()
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# check if there is enough RAM to run
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if "memsize" in self._vmx_pairs:
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self.check_available_ram(int(self._vmx_pairs["memsize"]))
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self._set_network_options()
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self._set_serial_console()
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self._write_vmx_file()
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@ -4,3 +4,4 @@ Jinja2>=2.7.3
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raven>=5.2.0
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gns3-netifaces==0.10.4.1
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docker-py==1.4.0
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psutil>=2.2.1
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