Explanation
This message is the result of a MODIFY DVCDATA
command. Between one and nine storage control session reports can
be displayed on a single line. An individual session report is provided
with the format of
tsnnh, where the following apply:
- t
- Session type, which can be:
- C = concurrent copy session
- E = XRC enhanced (multiple reader) session
- X = XRC session
- s
- Session status, which can be:
- A = active session
- Q = quiesced session
- S = suspended session
- T = timed-out session
A session can become suspended as a result of a system reset
generated; for example, by a system IPL.
- nn
- Storage control session identifier. This is a hexadecimal number
ranging from 01 to FF.
- h
- Host connection field, which can be:
- (blank) = owned by this processor which has access to the storage
control session.
- * = owned by another processor.
- ? = owned by this processor which can or can not have access to
the storage control session. A question mark can mean that the device
is offline.
The following actions can be taken based on
the status of the storage control session:
- Active session - The session is currently active and can be ended
only from a device that is in the session.
- Quiesced session - The session has been quiesced either by an
XSUSPEND command, a cache failure, or by a system reset (caused by
the IPL of the owning processor). The session can be resumed or ended
from any processor.
- Suspended session - The session has been suspended either by an
XSUSPEND command, a cache failure, or by a system reset (caused by
the IPL of the owning processor). The session can be resumed or ended
from any processor.
- Timed-out session - The session had been ended by the storage
control. The timeout interval for the session has expired. The session
can not be resumed and is available to be reused.
System action
The command returns the status of all storage
control sessions that are on the storage control.
System programmer response
Source
Extended remote copy (XRC) or concurrent copy.