tree 6f800ed2728259676904e556d8fee11a0ebb06a3
parent 9e905375839213e15e0ef47f1ee0e514cf2d1167
author Dhruvaraj Subhashchandran <dhruvaraj@in.ibm.com> 1651836071 -0500
committer Dhruvaraj Subhashchandran <dhruvaraj@in.ibm.com> 1687346091 -0500

OpenPOWER: Limit User-Requested System Dumps

System dumps can be several gigabytes in size. To conserve space,
only one dump is stored at a time. When a new dump is requested,
the existing dump will be discarded while creating a new one.
In the case of system-generated dumps, which are triggered by
critical errors, it is permissible to initiate a new dump even
if an existing dump is already present in the host memory
This commit adds a restriction on initiating new user-requested system
dumps while a system dump is in progress or if one is already stored
in host memory.

New user-requested system dumps will be allowed once the existing
dump is deleted or offloaded.

This change applies only to user-requested dumps and does not impact
system generated dumps.

Test:
- Initiate system dump when another dump in progress and verified
  a Unavailable was returned
- Force a system generated system dump when one dump is present
  a Unavailable was returned

Signed-off-by: Dhruvaraj Subhashchandran <dhruvaraj@in.ibm.com>
Change-Id: I4598912b0761669859f84a43ab4c60f47664b1e6