nova-compute uses the very same command on Ubuntu and CentOS:
2016-06-01 16:54:30.336 26950 DEBUG oslo_concurrency.processutils [req-5de854fe-2957-4307-8318-274a141363ce 035602374b8944efa0f6ff9a9584f3a6 c9 dcf94a37d04a46adb2a7ef42f6b9f3 - - -] CMD "mkfs -t vfat -n config-2 /var/lib/nova/instances/9c5b8421-11f3-4ca4-8972-628f82a20674/disk.config" r eturned: 0 in 0.014s execute /usr/lib/python2.7/site-packages/oslo_concurrency/processutils.py:356
and
2016-06-01 17:36:48.900 27558 DEBUG oslo_concurrency.processutils [req-78e93714-49c4-4152-94a8-391b60a6f919 0cd9e79b3589452ea19ae5780a31a97d 8c 0694c968144610be1c5897497fdc02 - - -] CMD "mkfs -t vfat -n config-2 /var/lib/nova/instances/0c2600cf-8cce-4969-a738-0b6e2b97c031/disk.config" r eturned: 0 in 0.050s execute /usr/lib/python2.7/dist-packages/oslo_concurrency/processutils.py:356
so this looks to be a difference in the mkfs implementations...
nova-compute uses the very same command on Ubuntu and CentOS:
2016-06-01 16:54:30.336 26950 DEBUG oslo_concurrenc y.processutils [req-5de854fe- 2957-4307- 8318-274a141363 ce 035602374b8944e fa0f6ff9a9584f3 a6 c9 db2a7ef42f6b9f3 - - -] CMD "mkfs -t vfat -n config-2 /var/lib/ nova/instances/ 9c5b8421- 11f3-4ca4- 8972-628f82a206 74/disk. config" r python2. 7/site- packages/ oslo_concurrenc y/processutils. py:356
dcf94a37d04a46a
eturned: 0 in 0.014s execute /usr/lib/
and
2016-06-01 17:36:48.900 27558 DEBUG oslo_concurrenc y.processutils [req-78e93714- 49c4-4152- 94a8-391b60a6f9 19 0cd9e79b3589452 ea19ae5780a31a9 7d 8c e1c5897497fdc02 - - -] CMD "mkfs -t vfat -n config-2 /var/lib/ nova/instances/ 0c2600cf- 8cce-4969- a738-0b6e2b97c0 31/disk. config" r python2. 7/dist- packages/ oslo_concurrenc y/processutils. py:356
0694c968144610b
eturned: 0 in 0.050s execute /usr/lib/
so this looks to be a difference in the mkfs implementations...