** Also affects: nova/queens Importance: Undecided Status: New ** Also affects: nova/rocky Importance: Undecided Status: New
** Changed in: nova/queens Status: New => Confirmed ** Changed in: nova/queens Importance: Undecided => Medium ** Changed in: nova/rocky Importance: Undecided => Medium ** Changed in: nova/rocky Status: New => Confirmed ** Changed in: nova Importance: Undecided => Medium -- You received this bug notification because you are a member of Yahoo! Engineering Team, which is subscribed to OpenStack Compute (nova). https://bugs.launchpad.net/bugs/1809123 Title: OSError failure to read when creating multiple instances with NFS Status in OpenStack Compute (nova): Fix Released Status in OpenStack Compute (nova) queens series: Confirmed Status in OpenStack Compute (nova) rocky series: Confirmed Bug description: There is a race condition in when launching multiple instances over NFS simultaneously that can end up causing the os.utime function to fail when updating the mtime for the image base: 2018-12-15 14:22:38.740 7 INFO nova.virt.libvirt.driver [req-d33edf35-733b-4591-831c-666cd159cee1 8965b22a11c44875a90fe88f50769a5a b9644067db0d44789e19d9d032287ada - default default] [instance: 6fec5d88-09ab-4ecc-815d-c08c298fe552] Creating image 2018-12-15 14:22:38.747 7 ERROR nova.compute.manager [req-d33edf35-733b-4591-831c-666cd159cee1 8965b22a11c44875a90fe88f50769a5a b9644067db0d44789e19d9d032287ada - default default] [instance: 6fec5d88-09ab-4ecc-815d-c08c298fe552] Instance failed to spawn: OSError: [Errno 13] Permission denied 2018-12-15 14:22:38.747 7 ERROR nova.compute.manager [instance: 6fec5d88-09ab-4ecc-815d-c08c298fe552] Traceback (most recent call last): 2018-12-15 14:22:38.747 7 ERROR nova.compute.manager [instance: 6fec5d88-09ab-4ecc-815d-c08c298fe552] File "/usr/lib/python2.7/site-packages/nova/compute/manager.py", line 2252, in _build_resources 2018-12-15 14:22:38.747 7 ERROR nova.compute.manager [instance: 6fec5d88-09ab-4ecc-815d-c08c298fe552] yield resources 2018-12-15 14:22:38.747 7 ERROR nova.compute.manager [instance: 6fec5d88-09ab-4ecc-815d-c08c298fe552] File "/usr/lib/python2.7/site-packages/nova/compute/manager.py", line 2032, in _build_and_run_instance 2018-12-15 14:22:38.747 7 ERROR nova.compute.manager [instance: 6fec5d88-09ab-4ecc-815d-c08c298fe552] block_device_info=block_device_info) 2018-12-15 14:22:38.747 7 ERROR nova.compute.manager [instance: 6fec5d88-09ab-4ecc-815d-c08c298fe552] File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/driver.py", line 3091, in spawn 2018-12-15 14:22:38.747 7 ERROR nova.compute.manager [instance: 6fec5d88-09ab-4ecc-815d-c08c298fe552] block_device_info=block_device_info) 2018-12-15 14:22:38.747 7 ERROR nova.compute.manager [instance: 6fec5d88-09ab-4ecc-815d-c08c298fe552] File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/driver.py", line 3469, in _create_image 2018-12-15 14:22:38.747 7 ERROR nova.compute.manager [instance: 6fec5d88-09ab-4ecc-815d-c08c298fe552] fallback_from_host) 2018-12-15 14:22:38.747 7 ERROR nova.compute.manager [instance: 6fec5d88-09ab-4ecc-815d-c08c298fe552] File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/driver.py", line 3560, in _create_and_inject_local_root 2018-12-15 14:22:38.747 7 ERROR nova.compute.manager [instance: 6fec5d88-09ab-4ecc-815d-c08c298fe552] instance, size, fallback_from_host) 2018-12-15 14:22:38.747 7 ERROR nova.compute.manager [instance: 6fec5d88-09ab-4ecc-815d-c08c298fe552] File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/driver.py", line 7634, in _try_fetch_image_cache 2018-12-15 14:22:38.747 7 ERROR nova.compute.manager [instance: 6fec5d88-09ab-4ecc-815d-c08c298fe552] size=size) 2018-12-15 14:22:38.747 7 ERROR nova.compute.manager [instance: 6fec5d88-09ab-4ecc-815d-c08c298fe552] File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/imagebackend.py", line 243, in cache 2018-12-15 14:22:38.747 7 ERROR nova.compute.manager [instance: 6fec5d88-09ab-4ecc-815d-c08c298fe552] *args, **kwargs) 2018-12-15 14:22:38.747 7 ERROR nova.compute.manager [instance: 6fec5d88-09ab-4ecc-815d-c08c298fe552] File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/imagebackend.py", line 601, in create_image 2018-12-15 14:22:38.747 7 ERROR nova.compute.manager [instance: 6fec5d88-09ab-4ecc-815d-c08c298fe552] nova.privsep.path.utime(base) 2018-12-15 14:22:38.747 7 ERROR nova.compute.manager [instance: 6fec5d88-09ab-4ecc-815d-c08c298fe552] File "/usr/lib/python2.7/site-packages/oslo_privsep/priv_context.py", line 207, in _wrap 2018-12-15 14:22:38.747 7 ERROR nova.compute.manager [instance: 6fec5d88-09ab-4ecc-815d-c08c298fe552] return self.channel.remote_call(name, args, kwargs) 2018-12-15 14:22:38.747 7 ERROR nova.compute.manager [instance: 6fec5d88-09ab-4ecc-815d-c08c298fe552] File "/usr/lib/python2.7/site-packages/oslo_privsep/daemon.py", line 202, in remote_call 2018-12-15 14:22:38.747 7 ERROR nova.compute.manager [instance: 6fec5d88-09ab-4ecc-815d-c08c298fe552] raise exc_type(*result[2]) 2018-12-15 14:22:38.747 7 ERROR nova.compute.manager [instance: 6fec5d88-09ab-4ecc-815d-c08c298fe552] OSError: [Errno 13] Permission denied 2018-12-15 14:22:38.747 7 ERROR nova.compute.manager [instance: 6fec5d88-09ab-4ecc-815d-c08c298fe552] The NFS settings are correct: [root@overcloud-novacompute-0 ~]# mount | grep nova overcloud-controller-0.opnfvlf.org:/nova on /var/lib/nova/instances type nfs4 (rw,relatime,sync,context=system_u:object_r:nfs_t:s0,vers=4.1,rsize=1048576,wsize=1048576,namlen=255,hard,nosharecache,proto=tcp,timeo=600,retrans=2,sec=sys,clientaddr=192.0.2.44,local_lock=none,addr=192.0.2.40,_netdev) [root@overcloud-novacompute-0 ~]# getenforce Permissive [root@overcloud-novacompute-0 ~]# ls -lrt /var/lib/nova/ total 0 drwxrwxrwx. 4 42436 42436 53 Dec 14 19:52 instances [root@overcloud-novacompute-0 ~]# ls -lrt /var/lib/nova/instances/ total 4 drwxr-xr-x. 2 42436 42436 54 Dec 14 19:16 _base drwxr-xr-x. 2 42436 42436 93 Dec 14 19:52 locks -rw-r--r--. 1 42436 42436 58 Dec 14 20:33 compute_nodes [root@overcloud-novacompute-0 ~]# ls -lrt /var/lib/nova/instances/_base/ total 13384 -rw-r--r--. 1 42427 42427 46137344 Dec 14 19:18 78c6ae575fd026484b1f46588b5c337b3fd53558 [root@overcloud-novacompute-0 ~]# docker exec -it bf4658c561e1 /bin/bash ()[nova@overcloud-novacompute-0 /]$ id -u nova 42436 ()[nova@overcloud-novacompute-0 /]$ id -u qemu 42427 ()[nova@overcloud-novacompute-0 /]$ ls -lrt /var/lib/nova/instances/ total 4 drwxr-xr-x. 2 nova nova 54 Dec 14 19:16 _base drwxr-xr-x. 2 nova nova 93 Dec 14 19:52 locks -rw-r--r--. 1 nova nova 58 Dec 14 20:33 compute_nodes ()[nova@overcloud-novacompute-0 /]$ ls -lrt /var/lib/nova/instances/_base/ total 13384 -rw-r--r--. 1 qemu qemu 46137344 Dec 14 19:18 78c6ae575fd026484b1f46588b5c337b3fd53558 To manage notifications about this bug go to: https://bugs.launchpad.net/nova/+bug/1809123/+subscriptions -- Mailing list: https://launchpad.net/~yahoo-eng-team Post to : yahoo-eng-team@lists.launchpad.net Unsubscribe : https://launchpad.net/~yahoo-eng-team More help : https://help.launchpad.net/ListHelp