Revision ec79568d
| ID | ec79568d7878474ce8c75500f2aa535ac6b9bab7 |
Implement lockless query operations
This patch adds the framework for, and enables lockless OpQueryInstances. This
means that instances will be shown in ERROR_up or ERROR_down state, even though
this is not an error (but just an in-progress job).
The framework is implemented as follows:
- the OpQueryInstances, OpQueryNodes and OpQueryExports opcodes take
an additional “use_locking” flag which will denote whether to lock
or not; this patch only implements this for LUQueryInstances
- the luxi query functions take an additional argument use_locking
which is passed to the master daemon, and then passed to the above
opcodes
- cli.py export a new SYNC_OPT command line options which implement
setting this flag to true
- except for gnt-instance list, which uses this option, and for
name-only queries (e.g. QueryNodes(fields=["names"])), all other
callers are setting this flag to True
- RAPI also sets the flag to True
The patch was tested with a continuous (0.2s sleep in-between)
gnt-instance list during a burnin, and no problems were observed.
Reviewed-by: ultrotter
Files
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