Difference between revisions of "Pci resource management"
Line 17: | Line 17: | ||
risk: always reading DB can not cache. | risk: always reading DB can not cache. | ||
方法2: keep claimed status | 方法2: keep claimed status | ||
+ | |||
+ | problem 2: | ||
+ | multiple objects for same db instance of pci devices | ||
+ | must operating the local dev(otherwise miss the save process) | ||
+ | |||
</sub> | </sub> |
Revision as of 03:22, 20 January 2015
a) Same PCI had different Objects, one in the stats and another in the instance b) when RESIZE secondary host get other instances Objects
Resize:
-> new host claim -> old host stop (instance going to new HOST)-> new host starting new instance
Confirm:
new machine call source machines’s drop_resize_claim ( a new resource tracker been setting up)
Aborting:
new: stop new instance, drop claim -- > old: reverting old status and stating machine
problem 1: 'claimed' status must be used to keep old device on source machine. we use node_id, not hostname, so use claimed status to keep out other machine's device out. solution A: get compute node from instance's hostname --> get compute_node_id risk: always reading DB can not cache. 方法2: keep claimed status
problem 2:
multiple objects for same db instance of pci devices must operating the local dev(otherwise miss the save process)