Hp Hitachi Dynamic Link Manager Software Uživatelský manuál Strana 57

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2. HDLM Functions
33
Offline operation: Offline operation performed in the Path Management window
or by executing the
dlnkmgr command's offline operation.
#1
During reserve processing for an LU, the Online status is temporarily changed to
Online(P). When the reservation processing finishes, the Online(P) status is
changed to
Offline(C).
#2
When the following conditions are satisfied, the connected
Offline(C) paths
are automatically placed online:
All the online paths are
Online(E) and all the SCSI devices connected to
the
Online(E) paths have been deleted.
SCSI devices are connected and all the
Offline(E) paths are subject to
automatic failback.
SCSI devices are connected to the
Offline(C) paths.
#3
When a path is added dynamically, initially the path status is
Offline(C). The
path status will then automatically change to
Online. For details on dynamically
adding a path, see 4.7.1 Setting Up an Added LU and Path as an HDLM
Management-target.
#4
When the following conditions are all satisfied, a path that has been determined
to have an intermittent error also becomes subject to automatic failback:
All the paths connected to an LU are
Online(E), Offline(E), or
Offline(C).
All the paths connected to an LU have been determined to have an
intermittent error.
The processing of continuous I/O operations issued to an LU is successful.
#5
During reserve processing for an LU, the
Offline(E) status is temporarily
changed to
Offline(P). After the reserve processing finishes, the Offline(P)
status is changed to
Offline(C).
#6
When the following conditions are satisfied, the connected
Offline(E) paths
are automatically placed online:
All the online paths are
Online(E) and all the SCSI devices connected to
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