78 lines
2.1 KiB
ReStructuredText
78 lines
2.1 KiB
ReStructuredText
Cinder in Kolla
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===============
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Overview
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--------
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Currently Kolla can deploy the cinder services:
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- cinder-api
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- cinder-scheduler
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- cinder-backup
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- cinder-volume
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The cinder implementation defaults to using LVM storage. The default
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implementation requires a volume group be set up. This can either be
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a real physical volume or a loopback mounted file for development.
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Create a Volume Group
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---------------------
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Use pvcreate and vgcreate to create the volume group. For example with
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the devices /dev/sdb and /dev/sdc:
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::
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<WARNING ALL DATA ON /dev/sdb and /dev/sdc will be LOST!>
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pvcreate /dev/sdb /dev/sdc
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vgcreate cinder-volumes /dev/sdb /dev/sdc
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During development, it may be desirable to use file backed block storage. It
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is possible to use a file and mount it as a block device via the loopback
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system.
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::
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mknod /dev/loop2 b 7 2
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dd if=/dev/zero of=/var/lib/cinder_data.img bs=1G count=20
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losetup /dev/loop2 /var/lib/cinder_data.img
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pvcreate /dev/loop2
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vgcreate cinder-volumes /dev/loop2
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Validation
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----------
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Create a volume as follows:
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::
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$ openstack volume create --size 1 steak_volume
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<bunch of stuff printed>
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Verify it is available. If it says "error" here something went wrong during
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LVM creation of the volume.
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::
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$ openstack volume list
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+--------------------------------------+--------------+-----------+------+-------------+
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| ID | Display Name | Status | Size | Attached to |
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+--------------------------------------+--------------+-----------+------+-------------+
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| 0069c17e-8a60-445a-b7f0-383a8b89f87e | steak_volume | available | 1 | |
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+--------------------------------------+--------------+-----------+------+-------------+
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Attach the volume to a server using:
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::
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openstack server add volume steak_server 0069c17e-8a60-445a-b7f0-383a8b89f87e
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Check the console log added the disk:
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::
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openstack console log show steak_server
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A /dev/vdb should appear in the console log, at least when booting cirros.
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If the disk stays in the available state, something went wrong during the
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iSCSI mounting of the volume to the guest VM.
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