Answers <DL> in-line </DL>
Thanks
David
-----Original Message----- From: Sean Mooney smooney@redhat.com Sent: 29 January 2019 14:55 To: Lake, David (PG/R - Elec Electronic Eng) d.lake@surrey.ac.uk; openstack-dev@lists.openstack.org Cc: Ge, Chang Dr (Elec Electronic Eng) c.ge@surrey.ac.uk Subject: Re: Issue with launching instance with OVS-DPDK
On Mon, 2019-01-28 at 13:17 +0000, David Lake wrote:
Hello
I’ve built an Openstack all-in-one using OVS-DPDK via Devstack.
I can launch instances which use the “m1.small” flavour (which I have modified to include the hw:mem_size large as per the DPDK instructions) but as soon as I try to launch anything more than m1.small, I get this error:
Jan 28 12:56:52 localhost nova-conductor: #033[01;31mERROR nova.scheduler.utils [#033[01;36mNone req-917cd3b9-8ce6- 41af-8d44-045002512c91 #033[00;36madmin admin#033[01;31m] #033[01;35m[instance: 25cfee28-08e9-419c-afdb-4d0fe515fb2a] #033[01;31mError from last host: localhost (node localhost): [u'Traceback (most recent call last):\n', u' File "/opt/stack/nova/nova/compute/manager.py", line 1935, in _do_build_and_run_instance\n filter_properties, request_spec)\n', u' File "/opt/stack/nova/nova/compute/manager.py", line 2215, in _build_and_run_instance\n instance_uuid=instance.uuid, reason=six.text_type(e))\n', u'RescheduledException: Build of instance 25cfee28-08e9- 419c-afdb-4d0fe515fb2a was re-scheduled: internal error: qemu unexpectedly closed the monitor: 2019-01- 28T12:56:48.127594Z qemu-kvm: -chardev socket,id=charnet0,path=/var/run/openvswitch/vhu46b3c508-f8,server: info: QEMU waiting for connection on: disconnected:unix:/var/run/openvswitch/vhu46b3c508-f8,server\n2019-01- 28T12:56:49.251071Z qemu-kvm: -object memory-backend-file,id=ram-node0,prealloc=yes,mem-path=/dev/hugepages/ libvirt/qemu/4-instance- 00000005,share=yes,size=4294967296,host-nodes=0,policy=bind: os_mem_prealloc: Insufficient free host memory pages available to allocate guest RAM\n']#033[00m#033[00m
My Hypervisor is reporting 510.7GB of RAM and 61 vCPUs.
how much of that ram did you allocate as hugepages.
<DL> OVS_NUM_HUGEPAGES=3072 </DL>
can you provide the output of cat /proc/meminfo
<DL>
MemTotal: 526779552 kB MemFree: 466555316 kB MemAvailable: 487218548 kB Buffers: 2308 kB Cached: 22962972 kB SwapCached: 0 kB Active: 29493384 kB Inactive: 13344640 kB Active(anon): 20826364 kB Inactive(anon): 522012 kB Active(file): 8667020 kB Inactive(file): 12822628 kB Unevictable: 43636 kB Mlocked: 47732 kB SwapTotal: 4194300 kB SwapFree: 4194300 kB Dirty: 20 kB Writeback: 0 kB AnonPages: 19933028 kB Mapped: 171680 kB Shmem: 1450564 kB Slab: 1224444 kB SReclaimable: 827696 kB SUnreclaim: 396748 kB KernelStack: 69392 kB PageTables: 181020 kB NFS_Unstable: 0 kB Bounce: 0 kB WritebackTmp: 0 kB CommitLimit: 261292620 kB Committed_AS: 84420252 kB VmallocTotal: 34359738367 kB VmallocUsed: 1352128 kB VmallocChunk: 34154915836 kB HardwareCorrupted: 0 kB AnonHugePages: 5365760 kB CmaTotal: 0 kB CmaFree: 0 kB HugePages_Total: 6144 HugePages_Free: 2048 HugePages_Rsvd: 0 HugePages_Surp: 0 Hugepagesize: 2048 kB DirectMap4k: 746304 kB DirectMap2M: 34580480 kB DirectMap1G: 502267904 kB [stack@localhost devstack]$
</DL>
Build is the latest git clone of Devstack.
Thanks
David