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发表于 2022-10-20 14:12:56
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I create a volume then I use it to create server. I would like to rebuild this server such that its image is changed. When I call nova rebuild api with a new image, it is said:6 F% `7 n: P) b2 U
/ B: L: e5 F0 s' r# I# EImage c1d9.... is unacceptable: Unable to rebuild with a different image for a volume-backed server: B# ~: C' v# G1 b5 Z
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How can I rebuild volume-backend server?
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asked May 18, 2021 at 11:34% n) R7 Q, Y" a- z
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Bani
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1 Answer
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As noted in Openstack docs [1], rebuild is not supported for volume-based VMs.
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; J) x" a/ M: X2 aAssuming you are trying to rebuild the VM with a fresh image ("factory reset"), a slightly "hacky" solution is to replace the underlying volume with the fresh image while keeping the same pool/path.
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For Ceph based backend, it would be something like
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2 a/ b2 Y+ u3 ropenstack volume show <...> => Get pool/path from rbd backend7 C+ Z1 M0 w$ L4 L2 f
openstack image show <...> => Get pool/path from rbd backend
: T. `5 M5 [5 Z. y- h8 w# D! ~4 Topenstack server stop <VM> => Stop the VM2 h0 [7 s- m3 d6 O5 Q( p
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rbd -p <POOL NAME> mv <VM VOLUME UUID> <VM VOLUME UUID>.old0 W! u1 i7 X$ Q- _" _+ R, J5 V
rbd -p <POOL NAME> cp <IMAGE VOLUME UUID> <VM VOLUME UUID> 7 {1 E u. s9 [$ q& b
Once the copy finishes, start the VM
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openstack server start <VM> |
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发表于 2022-10-20 13:09:23