<table cellspacing="0" cellpadding="0" border="0" ><tr><td valign="top" style="font: inherit;">I use lustre in my HA-cluster,sometimes when I umount ost, the node will reboot.<div><div>an 20 09:23:10 oss1 kernel: Lustre: server umount testTwo-OST0003 complete</div><div>Jan 20 10:28:56 oss1 kernel: Lustre: server umount testTwo-OST0000 complete</div><div>Jan 20 10:28:58 oss1 kernel: exit dynlocks cache</div><div>Jan 20 10:29:11 oss1 kernel: audit(1295490551.122:25403): audit_pid=0 old=2787 by auid=4294967295</div><div>Jan 20 10:29:11 oss1 pcscd: pcscdaemon.c:572:signal_trap() Preparing for suicide</div><div>Jan 20 10:29:11 oss1 pcscd: hotplug_libusb.c:376:HPRescanUsbBus() Hotplug stopped</div><div>Jan 20 10:29:12 oss1 pcscd: readerfactory.c:1379:RFCleanupReaders() entering cleaning function</div><div>Jan 20 10:29:12 oss1 pcscd: pcscdaemon.c:532:at_exit() cleaning /var/run</div><div>Jan 20 10:29:12 oss1 kernel: Kernel logging (proc) stopped.</div><div>Jan
20 10:29:12 oss1 kernel: Kernel log daemon terminating.</div><div>Jan 20 10:29:13 oss1 exiting on signal 15</div><div><br></div><div>I think this may be the stonith resource reboot it?anyone else meet the same problem?</div><div>I use single ring, I think the question is when umount several disks, the communication between nodes blocks. redundant communication is helpful?</div></div></td></tr></table><br>