Adding openstack-volumes team to cc: ** Tags added: volumes
-- You received this bug notification because you are a member of Nova volume, which is subscribed to the bug report. https://bugs.launchpad.net/bugs/884984 Title: Cannot boot from volume with 2 devices Status in OpenStack Compute (Nova): Confirmed Bug description: More details on: https://answers.launchpad.net/nova/+question/176938 Summary: ------------- Say I had 2 disks, disk1 and disk2 (represented by 2 volumes). disk1 has the root-file-system and disk2 has some data. I boot an instances using the boot-from-volumes extension, and specify the 2 disks such as disk1 should be attached to /dev/vda and disk2 to /dev/vdb. When the instance is launched it fails to boot, because it tries to find the root-filesystem on disk2 instead. The underlying problem is with virsh/libvirt. Boot fails because in the libvirt.xml file created by Openstack, disk2 (/dev/vdb) is listed before disk1 (/dev/vda). So, what happens is that the hypervisor attaches disk2 first (since its listed first in the XML). Therefore when these disks are attached on the guest, disk2 appears as /dev/vda and disk1 as /dev/vdb. Later the kernel tries to find the root filesystem on '/dev/vda' (because that's what is selected as the root) and it fails for obvious reason. I think it's a virsh bug. It should be smart about it and attach the devices in the right order. To manage notifications about this bug go to: https://bugs.launchpad.net/nova/+bug/884984/+subscriptions -- Mailing list: https://launchpad.net/~openstack-volume Post to : openstack-volume@lists.launchpad.net Unsubscribe : https://launchpad.net/~openstack-volume More help : https://help.launchpad.net/ListHelp
