HP Hitachi Dynamic Link Manager Software - Manual (Page 55)

2. HDLM Functions
31
Offline(C)
.
The (P) means pending, which indicates that the operation to take the path offline
is in the waiting-to-execute status (i.e. a request has been made).
•
Online(E)
An error has occurred on the path, but none of the other paths that access the same
LU are in the
Online
status.
If none of the paths accessing a particular LU are in the
Online
status, one of the
paths is changed to the
Online(E)
status. This ensures that the LU can be
accessed through at least one path.
The (E) means error, which indicates that an error has occurred on the path from
some previous operation.
•
Online(EP)
The status of an
Offline(P)
path changes to
Online(EP)
when the path goes
through the following process during reserve processing in a cluster
configuration:
1.
When exactly two paths are connected to an LU and the user performs an
offline operation on the
Offline(E)
path to change it to
Offline(P)
and
the other path is
Online(E)
.
2. When one path is
Offline(P)
, the other path must be
Online(E)
. If
HDLM detects an error in the
Online(E)
path, then the path statuses will
change as follows:
The
Online(E)
path changes to
Offline(E)
.
The
Offline(P)
path changes to
Online(EP)
.
If the reserve processing finishes after the path has changed from
Online(EP)
to
Offline(P)
, the offline operation will end successfully and the path will
change to
Offline(C)
.
If the reserve processing finishes while the path is
Online(EP)
, the offline
operation will fail and the path will change to
Online(E)
.
(2) The Offline Path Statuses
The offline path statuses are as follows:
•
Offline(C)
The path is offline because an offline operation was performed.
The (C) means command, which indicates that the path was placed offline by
using the GUI or a command.
•
Offline(E)