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xen-devel
Re: [Xen-devel] Why I cannot reconnect blk backend
All I can suggest is that your turn on the logging in xenstore and watch
what happens - looking for differences between what happens then xenvbd
first starts up and when it resumes.
blkback: ring-ref 335, event-channel 5, protocol 1 (unspecified,
assuming native)
vbd vbd-3-768: 1 mapping ring-ref 335 port 5
blkback: ring-ref 335, event-channel 5, protocol 1 (unspecified,
assuming native)
vbd vbd-3-768: 1 mapping ring-ref 335 port 5
blkback: ring-ref 335, event-channel 5, protocol 1 (unspecified,
assuming native)
vbd vbd-3-768: 1 mapping ring-ref 335 port 5
What's this mean?
I guess when vbd device resume, I use a mapped ring-ref to initialize
device. When vbd device resume, I allocate some new memory and call
SHARED_RING_INIT to init them and then save the ring-ref to xenstore.
After that, xenstore pops a warning as above. How can I release that
ring-ref when suspend vbd device, or how to reallocate a new ring-ref
for vbd device?
Thanks
Wayne
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