Public bug reported:
My environment uses the OpenStack Pike，fibre Channel is used for back-end
storage，when we place 'volume_use_multipath=True' in nova.conf, we found that
evacuation leads to multipath residue。
Trace code through Debug，we find os-brick can not find volume_paths, So the
residual multipath cannot be removed。
By analyzing the code，the Volume_path acquired through FC is not in a local
directory, because it's on the new node.
** Affects: nova
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1906768
Title:
Evacuation results in multipath residue when use fc
Status in OpenStack Compute (nova):
New
Bug description:
My environment uses the OpenStack Pike，fibre Channel is used for back-end
storage，when we place 'volume_use_multipath=True' in nova.conf, we found that
evacuation leads to multipath residue。
Trace code through Debug，we find os-brick can not find volume_paths, So the
residual multipath cannot be removed。
By analyzing the code，the Volume_path acquired through FC is not in a
local directory, because it's on the new node.
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https://bugs.launchpad.net/nova/+bug/1906768/+subscriptions
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