Synnefo » snf-ganeti

.BI "[ -L[" path "] [-X]]"

Note that the moves list will be split into independent steps, called

"jobsets", but only for visual inspection, not for actually

parallelisation. It is not possible to parallelise these directly when

executed via "gnt-instance" commands, since a compound command

(e.g. failover and replace-disks) must be executed serially. Parallel

execution is only possible when using the Luxi backend and the

\fI-L\fR option.

The algorithm for splitting the moves into jobsets is by accumulating

moves until the next move is touching nodes already touched by the

current moves; this means we can't execute in parallel (due to

resource allocation in Ganeti) and thus we start a new jobset.

.B "-X"

When using the Luxi backend, hbal can also execute the given

commands. The execution method is to execute the individual jobsets

(see the \fI-C\fR option for details) in separate stages, aborting if

at any time a jobset doesn't have all jobs successful. Each step in

the balancing solution will be translated into exactly one Ganeti job

(having between one and three OpCodes), and all the steps in a jobset

will be executed in parallel. The jobsets themselves are executed

serially.

.TP