Trying to perform file injection without libguestfs, i.e. fallback to using nbd.
2015-08-13 13:21:21 43295 DEBUG oslo_concurrency.processutils [req-e70d20d6-f42c-4d3e-8598-4dd1a76e09f5 61e0c3d7a0204bdeb647498c47599bc0 c942c664c4024ce4b5fe2bf8c3a21a3c] Running cmd (subprocess): sudo nova-rootwrap /opt/stack/service/nova-compute/etc/nova/rootwrap.conf qemu-nbd -c /dev/nbd8 //var/lib/nova/instances/e8cb4369-adf8-4e97-ad75-9d181d3c9dac/disk execute /opt/stack/venv/nova-20150805T111039Z/lib/python2.7/site-packages/oslo_concurrency/processutils.py:199
2015-08-13 13:21:21 43295 DEBUG oslo_concurrency.processutils [req-e70d20d6-f42c-4d3e-8598-4dd1a76e09f5 61e0c3d7a0204bdeb647498c47599bc0 c942c664c4024ce4b5fe2bf8c3a21a3c] CMD "sudo nova-rootwrap /opt/stack/service/nova-compute/etc/nova/rootwrap.conf qemu-nbd -c /dev/nbd8 //var/lib/nova/instances/e8cb4369-adf8-4e97-ad75-9d181d3c9dac/disk" returned: 0 in 0.096s execute /opt/stack/venv/nova-20150805T111039Z/lib/python2.7/site-packages/oslo_concurrency/processutils.py:225
2015-08-13 13:21:21 43295 DEBUG oslo_concurrency.lockutils [req-e70d20d6-f42c-4d3e-8598-4dd1a76e09f5 61e0c3d7a0204bdeb647498c47599bc0 c942c664c4024ce4b5fe2bf8c3a21a3c] Lock "nbd-allocation-lock" released by "_inner_get_dev" :: held 0.099s inner /opt/stack/venv/nova-20150805T111039Z/lib/python2.7/site-packages/oslo_concurrency/lockutils.py:456
2015-08-13 13:21:21 43295 DEBUG nova.virt.disk.mount.api [req-e70d20d6-f42c-4d3e-8598-4dd1a76e09f5 61e0c3d7a0204bdeb647498c47599bc0 c942c664c4024ce4b5fe2bf8c3a21a3c] Map dev /dev/nbd8 map_dev /opt/stack/venv/nova-20150805T111039Z/lib/python2.7/site-packages/nova/virt/disk/mount/api.py:140
2015-08-13 13:21:21 43295 DEBUG oslo_concurrency.processutils [req-e70d20d6-f42c-4d3e-8598-4dd1a76e09f5 61e0c3d7a0204bdeb647498c47599bc0 c942c664c4024ce4b5fe2bf8c3a21a3c] Running cmd (subprocess): sudo nova-rootwrap /opt/stack/service/nova-compute/etc/nova/rootwrap.conf kpartx -a /dev/nbd8 execute /opt/stack/venv/nova-20150805T111039Z/lib/python2.7/site-packages/oslo_concurrency/processutils.py:199
2015-08-13 13:21:21 43295 DEBUG oslo_concurrency.processutils [req-e70d20d6-f42c-4d3e-8598-4dd1a76e09f5 61e0c3d7a0204bdeb647498c47599bc0 c942c664c4024ce4b5fe2bf8c3a21a3c] CMD "sudo nova-rootwrap /opt/stack/service/nova-compute/etc/nova/rootwrap.conf kpartx -a /dev/nbd8" returned: 0 in 0.093s execute /opt/stack/venv/nova-20150805T111039Z/lib/python2.7/site-packages/oslo_concurrency/processutils.py:225
2015-08-13 13:21:21 43295 DEBUG nova.virt.disk.mount.api [req-e70d20d6-f42c-4d3e-8598-4dd1a76e09f5 61e0c3d7a0204bdeb647498c47599bc0 c942c664c4024ce4b5fe2bf8c3a21a3c] Fail to mount, tearing back down do_mount /opt/stack/venv/nova-20150805T111039Z/lib/python2.7/site-packages/nova/virt/disk/mount/api.py:223
Although the kpartx command works the check for file path fails generating an error.
Inserting a short sleep before checking for the path seems to work. This issue is obviously timing related and I do not encounter this when running devstack on a libvirt host. However it occurs on some of the baremetal hypervisors in our lab very reliably.
Fix proposed to branch: master /review. openstack. org/212619
Review: https:/