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Bug #995

closed

cannot enable discard-mode channels in snapshot sessions

Added by Julien Desfossez almost 9 years ago. Updated over 7 years ago.

Status:
Resolved
Priority:
Normal
Assignee:
-
Target version:
LTTng - 2.9
Start date:
02/02/2016
Due date:
% Done:

0%

Estimated time:

Description

If we create a snapshot session and manually enable a channel (kernel or UST) in discard mode, the --discard option is ignored and the channel stays in --overwrite mode.
The user should be able to configure a channel in discard mode even for snapshot sessions. At least a warning should be output.

To reproduce:
$ lttng create --snapshot
$ lttng enable-channel -k b --discard
$ lttng list auto-20160202-102617 === Domain: Kernel ===

Channels:
-------------
- b: [enabled]

Attributes:
      overwrite mode: 1
[...]
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