Commit ID 46a75dedb4 consolidated code from the

various dmeventd plug-ins into a new function called 'dmeventd_lvm2_command',
but the new function did not strip off the "_mlog" extentions that the
mirror plug-in had been doing.  This created bug 794904 - failure to replace
devices in a redundant log.

The test suite did catch this scenario because it performs repair tests (mainly)
through the CLI and not dmeventd.  It's also not easy to test because the test
itself will hang if the bug is encountered.

WHATS_NEW

@@ -1,5 +1,6 @@
 Version 2.02.96 - 
 ================================
+  Fix ability to handle failures in mirrored log (regression intro 2.02.89).
   Fix unlocking volume group in vgreduce in error path.
   Exit immediately if LISTEN_PID env var incorrect during systemd handover.
   Detect VG name being part of the LV name in lvconvert --splitmirrors -n.

daemons/dmeventd/plugins/lvm2/dmeventd_lvm.c

@@ -160,6 +160,11 @@ int dmeventd_lvm2_command(struct dm_pool *mem, char *buffer, size_t size,
 		return 0;
 	}
 
+	/* strip off the mirror component designations */
+	layer = strstr(lv, "_mlog");
+	if (layer)
+		*layer = '\0';
+
 	r = dm_snprintf(buffer, size, "%s %s/%s", cmd, vg, lv);
 
 	dm_pool_free(mem, vg);