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How to connect plain Hard drive to compute node?

asked 2014-12-22 06:33:31 -0500

I add 4TB hard drive on pci-e raid controller to my compute node (juno, debian) but system cannot see it or allocate instances.

If I am not supposed to install root fs on this hdd or to create cinder volume on this hdd can anybody recommend method to add this disk space to openstack ?

Just to explain to system to allocate space on additional disks for virtual machines.

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answered 2014-12-22 11:01:45 -0500

dgalvao gravatar image

If you have cinder installed in that node, you need to create a pv in that disk, then add it to the existing cinder-volumes volume group with vgextend (see http://docs.openstack.org/juno/instal... and http://rgheck.blogspot.com/2012/07/ho... ).

That works if you want to add additional volumes to your virtual machines.

If you are asking about the primary disk for virtual machines, they typically go in /var/lib/nova/instances. Likewise you can simply add that disk to whatever volume group contains /var/lib/nova/instances and then use lvextend, and resize2fs. Or you could format a new filesystem and mount /var/lib/nova/instances in the new disk.

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Thanks.

Yes I think lvextend is what I am looking for. I will make and test it.

szemtsov gravatar imageszemtsov ( 2014-12-23 05:10:14 -0500 )edit

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Asked: 2014-12-22 06:33:31 -0500

Seen: 1,583 times

Last updated: Dec 22 '14