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Fix: consumerd: use packet sequence number for rotation position
[lttng-tools.git]
/
src
/
bin
/
lttng-sessiond
/
cmd.c
diff --git
a/src/bin/lttng-sessiond/cmd.c
b/src/bin/lttng-sessiond/cmd.c
index e067cb835e1a2739dfa35f83ce32a3d3c59b586a..02a92be1e07e45ba71e4c767ebca0f6a18050ec9 100644
(file)
--- a/
src/bin/lttng-sessiond/cmd.c
+++ b/
src/bin/lttng-sessiond/cmd.c
@@
-4907,6
+4907,12
@@
int cmd_rotate_session(struct ltt_session *session,
goto end;
}
goto end;
}
+ /* Unsupported feature in lttng-modules before 2.8 (lack of sequence number). */
+ if (session->kernel_session && !kernel_supports_ring_buffer_packet_sequence_number()) {
+ cmd_ret = LTTNG_ERR_ROTATION_NOT_AVAILABLE_KERNEL;
+ goto end;
+ }
+
if (session->rotation_state == LTTNG_ROTATION_STATE_ONGOING) {
DBG("Refusing to launch a rotation; a rotation is already in progress for session %s",
session->name);
if (session->rotation_state == LTTNG_ROTATION_STATE_ONGOING) {
DBG("Refusing to launch a rotation; a rotation is already in progress for session %s",
session->name);
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