This should get you started with using rbd.
<disk type='network' device='disk'>
<driver name='qemu' type='raw' cache='writeback'/>
<auth username='rbd.vps'>
<secret type='ceph' uuid='xxxx'/>
</auth>
<source protocol='rbd' name='rbd/vps-test2'>
<host name='192.168.10.111' port='6789'/>
<host name='192.168.10.112' port='6789'/>
<host name='192.168.10.113' port='6789'/>
</source>
<target dev='sda' bus='scsi'/>
<vendor>WDC</vendor>
<product>WD40EFRX-68WT0N0</product>
<boot order='1'/>
<alias name='scsi0-0-0-0'/>
<address type='drive' controller='0' bus='0' target='0' unit='0'/>
</disk>
cat > secret.xml <<EOF
<secret ephemeral='no' private='no'>
<uuid>xxxx</uuid>
<usage type='ceph'>
<name>client.rbd.vps secret</name>
</usage>
</secret>
EOF
virsh secret-define --file secret.xml
virsh secret-set-value --secret xxxx --base64 `ceph auth get-key
client.rbd.vps 2>/dev/null`
-----Original Message-----
To: ceph-users@xxxxxxxxxxxxxx
Cc: dev@xxxxxxx
Subject: Qemu RBD image usage
Hi all,
I want to attach another RBD image into the Qemu VM to be used as
disk.
However, it always failed. The VM definiation xml is attached.
Could anyone tell me where I did wrong?
|| nstcc3@nstcloudcc3:~$ sudo virsh start ubuntu_18_04_mysql
--console
|| error: Failed to start domain ubuntu_18_04_mysql
|| error: internal error: process exited while connecting to monitor:
|| 2019-12-09T16:24:30.284454Z qemu-system-x86_64: -drive
||
file=rbd:rwl_mysql/mysql_image:auth_supported=none:mon_host=nstcloudcc4\
:6789,format=raw,if=none,id=drive-virtio-disk1:
|| error connecting: Operation not supported
The cluster info is below:
|| ceph@nstcloudcc3:~$ ceph --version
|| ceph version 14.0.0-16935-g9b6ef711f3
(9b6ef711f3a40898756457cb287bf291f45943f0) octopus (dev)
|| ceph@nstcloudcc3:~$ ceph -s
|| cluster:
|| id: e31502ff-1fb4-40b7-89a8-2b85a77a3b09
|| health: HEALTH_OK
||
|| services:
|| mon: 1 daemons, quorum nstcloudcc4 (age 2h)
|| mgr: nstcloudcc4(active, since 2h)
|| osd: 4 osds: 4 up (since 2h), 4 in (since 2h)
||
|| data:
|| pools: 1 pools, 128 pgs
|| objects: 6 objects, 6.3 KiB
|| usage: 4.0 GiB used, 7.3 TiB / 7.3 TiB avail
|| pgs: 128 active+clean
||
|| ceph@nstcloudcc3:~$
|| ceph@nstcloudcc3:~$ rbd info rwl_mysql/mysql_image
|| rbd image 'mysql_image':
|| size 100 GiB in 25600 objects
|| order 22 (4 MiB objects)
|| snapshot_count: 0
|| id: 110feda39b1c
|| block_name_prefix: rbd_data.110feda39b1c
|| format: 2
|| features: layering, exclusive-lock, object-map, fast-diff,
deep-flatten
|| op_features:
|| flags:
|| create_timestamp: Mon Dec 9 23:48:17 2019
|| access_timestamp: Mon Dec 9 23:48:17 2019
|| modify_timestamp: Mon Dec 9 23:48:17 2019
B.R.
Changcheng
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