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Kirill Smelkov
neo
Commits
92c5fd44
Commit
92c5fd44
authored
May 31, 2017
by
Kirill Smelkov
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parent
a73a1f6b
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go/neo/master.go
go/neo/master.go
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go/neo/master.go
View file @
92c5fd44
...
...
@@ -14,6 +14,7 @@
// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
//
// See COPYING file for full licensing terms.
// See https://www.nexedi.com/licensing for rationale and options.
package
neo
// master node
...
...
@@ -90,7 +91,7 @@ func NewMaster(clusterName string) *Master {
// Start requests cluster to eventually transition into running state
// it returns an error if such transition is not currently possible (e.g. partition table is not operational)
// it returns nil if the transition began.
// NOTE upon successful
l
return cluster is not yet in running state - the transition will
// NOTE upon successful return cluster is not yet in running state - the transition will
// take time and could be also automatically aborted due to cluster environment change (e.g.
// a storage node goes down)
func
(
m
*
Master
)
Start
()
error
{
...
...
@@ -274,7 +275,7 @@ loop:
if
m
.
partTab
.
OperationalWith
(
&
m
.
nodeTab
)
{
// reply "ok to start" after whole recovery finishes
// XXX ok? we want to retr
ei
ve all recovery information first?
// XXX ok? we want to retr
ie
ve all recovery information first?
// XXX or initially S is in PENDING state and
// transitions to RUNNING only after successful
// recovery?
...
...
@@ -297,7 +298,7 @@ loop:
}
}
// consume left recovery respon
c
es (which should come without delay since it was cancelled)
// consume left recovery respon
s
es (which should come without delay since it was cancelled)
for
;
inprogress
>
0
;
inprogress
--
{
<-
recovery
}
...
...
@@ -314,7 +315,7 @@ type storRecovery struct {
}
// storCtlRecovery drives a storage node during cluster recovering state
// it retrieves various ids and parition table from as stored on the storage
// it retrieves various ids and par
t
ition table from as stored on the storage
func
storCtlRecovery
(
ctx
context
.
Context
,
link
*
NodeLink
,
res
chan
storRecovery
)
{
var
err
error
defer
func
()
{
...
...
@@ -379,7 +380,7 @@ func storCtlRecovery(ctx context.Context, link *NodeLink, res chan storRecovery)
// --------------------
//
// - starts with operational parttab
// - tell all storages to perform data verifica
ion (TODO) and retrei
ve last ids
// - tell all storages to perform data verifica
tion (TODO) and retrie
ve last ids
// - once we are done without loosing too much storages in the process (so that
// parttab is still operational) we are ready to enter servicing state.
...
...
@@ -632,7 +633,7 @@ func (m *Master) accept(n nodeCome) (node *Node, ok bool) {
// allocUUID allocates new node uuid for a node of kind nodeType
// XXX it is bad idea for master to assign uuid to coming node
// -> better nodes generate really uniqu
i
e UUID themselves and always show with them
// -> better nodes generate really unique UUID themselves and always show with them
func
(
m
*
Master
)
allocUUID
(
nodeType
NodeType
)
NodeUUID
{
// see NodeUUID & NodeUUID.String for details
// XXX better to keep this code near to ^^^ (e.g. attached to NodeType)
...
...
@@ -812,7 +813,7 @@ type storageStartOperation struct {
resp
chan
error
// XXX
}
// storageStopOperation asks storage driver to stop storage node oerating
// storageStopOperation asks storage driver to stop storage node o
p
erating
type
storageStopOperation
struct
{
resp
chan
error
}
...
...
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