This is fixed in cloud-init 0.7.9. ** Also affects: cloud-init Importance: Undecided Status: New
** Changed in: cloud-init Importance: Undecided => High ** Changed in: cloud-init Status: New => Fix Released -- You received this bug notification because you are a member of Yahoo! Engineering Team, which is subscribed to cloud-init. https://bugs.launchpad.net/bugs/1647708 Title: Ephemeral disk on xenial is not mounted at boot Status in cloud-init: Fix Released Status in cloud-init package in Ubuntu: Fix Released Status in cloud-init source package in Xenial: Fix Released Status in cloud-init source package in Yakkety: Confirmed Bug description: === Begin SRU Template === [Impact] An ephemeral disk will not correctly be mounted on /mnt. This affects Azure and other instances where an ephemeral device is mounted by default on /mnt. It is recreated in Azure and on OpenStack. This can be mitigated by either: 1.) mount -a 2.) reboot [Test Case] In a correctly functioning image on OpenStack or Azure, you should be able to: 1.) Launch an instance 2.) ssh into instance and look around $ awk '$2 == "/mnt" { print $0 }' /etc/fstab /dev/vdb /mnt auto defaults,nofail,x-systemd.requires=cloud-init.service,comment=cloudconfig 0 2 $ awk '$2 == "/mnt" { print $0 }' /proc/mounts /dev/vdb /mnt vfat rw,relatime,fmask=0022,dmask=0022,codepage=437,iocharset=iso8859-1,shortname=mixed,errors=remount-ro 0 0 $ df -h /mnt Filesystem Size Used Avail Use% Mounted on /dev/vdb 40G 32K 40G 1% /mnt To check that this is functional with -proposed, after you've seen it failed 3.) enable -proposed and apt-get install cloud-init 4.) clean up and reboot as if fresh: sudo rm -Rf /var/lib/cloud /var/log/cloud-init sudo sed -i '/cloudconfig/d' /etc/fstab sudo reboot [Regression Potential] This is a regression caused by bug 1611074, so in addition to the above test case, we should go through the test cases shown there to see that those also work. === End SRU Template === When I boot the latest xenial Azure image (containing cloud-init 0.7.8-49-g9e904bb-0ubuntu1~16.04.1), the ephemeral disk does not end up mounted (though it is formatted appropriately). Restarting the mnt.mount service does mount it, which suggests there is an issue in the ordering of the services at boot. $ mount | grep mnt $ sudo systemctl status mnt.mount ● mnt.mount - /mnt Loaded: loaded (/etc/fstab; bad; vendor preset: enabled) Active: inactive (dead) Where: /mnt What: /dev/disk/cloud/azure_resource-part1 Docs: man:fstab(5) man:systemd-fstab-generator(8) $ sudo journalctl -u mnt.mount -- No entries -- $ cat /etc/fstab # CLOUD_IMG: This file was created/modified by the Cloud Image build process UUID=6a8554fa-8e1d-4916-ba03-4ca3837feb34 / ext4 defaults,discard 0 0 /dev/disk/cloud/azure_resource-part1 /mnt auto defaults,nofail,x-systemd.requires=cloud-init.service,comment=cloudconfig 0 2 $ sudo systemctl restart mnt.mount $ mount | grep mnt /dev/sdb1 on /mnt type ext4 (rw,relatime,data=ordered) $ ls /mnt/ lost+found $ sudo systemctl status mnt.mount ● mnt.mount - /mnt Loaded: loaded (/etc/fstab; bad; vendor preset: enabled) Active: active (mounted) since Tue 2016-12-06 12:49:06 UTC; 6s ago Where: /mnt What: /dev/sdb1 Docs: man:fstab(5) man:systemd-fstab-generator(8) Process: 1916 ExecMount=/bin/mount /dev/disk/cloud/azure_resource-part1 /mnt -o defaults,x-systemd.requires=cloud-init.service,comment=cloudconfig (code=exited, status=0/SUCCESS) Tasks: 0 Memory: 88.0K CPU: 15ms Dec 06 12:49:06 xenial-161206-1345 systemd[1]: Mounting /mnt... Dec 06 12:49:06 xenial-161206-1345 systemd[1]: Mounted /mnt. Related bugs: * bug 1611074: Reformatting of ephemeral drive fails on resize of Azure VM * bug 1642383: Unable to configure swap space on ephemeral disk in Azure To manage notifications about this bug go to: https://bugs.launchpad.net/cloud-init/+bug/1647708/+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