libfcoe logs "Missing Discovery Advertisement for fab xxxx count X"

Issue

• libfcoe logs "Missing Discovery Advertisement for fab xxxx count X"
• FCoE Storage paths are seen failing.

[1]
Oct 24 04:31:14 hostname kernel: libfcoe: host11: Missing Discovery Advertisement for fab 20xx000yycff5201 count 27
Oct 24 04:31:16 hostname kernel: libfcoe: host11: Missing Discovery Advertisement for fab 20xx000yycff5201 count 28
Oct 24 04:31:19 hostname kernel: Clocksource tsc unstable (delta = -8589931468 ns).  Enable clocksource failover by adding clocksource_failover kernel parameter.
Oct 24 04:31:20 hostname kernel: libfcoe: host11: Missing Discovery Advertisement for fab 20xx000yycff5201 count 29
Oct 24 04:31:21 hostname kernel: libfcoe: host12: Missing Discovery Advertisement for fab 200a000decff53c1 count 1
Oct 24 04:31:21 hostname kernel: libfcoe: host11: Missing Discovery Advertisement for fab 20xx000yycff5201 count 30
Oct 24 04:31:21 hostname kernel: libfcoe: host11: Missing Discovery Advertisement for fab 20xx000yycff5201 count 31
Oct 24 04:31:22 hostname kernel: libfcoe: host11: Missing Discovery Advertisement for fab 20xx000yycff5201 count 32
Oct 24 04:31:23 hostname fcoemon: FC_HOST_EVENT 10 at 1445641260 secs on host12:code 4=lip_reset datalen 4 data=0
Oct 24 04:31:33 hostname kernel: libfcoe: host11: FIP Fibre-Channel Forwarder MAC 0e:fc:00:00:00:00 deselected
Oct 24 04:31:33 hostname kernel: libfcoe: host11: FIP selected Fibre-Channel Forwarder MAC f8:b1:xx:xx:xx:81
Oct 24 04:31:35 hostname kernel: host11: Assigned Port ID 1e0008
Oct 24 04:31:35 hostname kernel: libfcoe: host12: FIP Fibre-Channel Forwarder MAC 0e:fc:00:00:00:00 deselected
Oct 24 04:31:35 hostname kernel: libfcoe: host12: FIP selected Fibre-Channel Forwarder MAC f8:b1:xx:xx:xx:35
Oct 24 04:31:35 hostname kernel: host12: Assigned Port ID 9c000c

[2]
Oct 24 04:32:02 hostname fcoemon: FC_HOST_EVENT 18 at 1445641268 secs on host11:code 4=lip_reset datalen 4 data=0
Oct 24 04:32:03 hostname fcoemon: FC_HOST_EVENT 19 at 1445641279 secs on host12:code 4=lip_reset datalen 4 data=0

[3]
Oct 24 04:32:05 hostname multipathd: data2: remaining active paths: 0
Oct 24 04:32:05 hostname multipathd: 8:128: mark as failed
Oct 24 04:32:05 hostname multipathd: sdk: remove path (uevent)
Oct 24 04:32:05 hostname kernel: device-mapper: table: 253:11: multipath: error getting device
Oct 24 04:32:05 hostname kernel: device-mapper: ioctl: error adding target to table
Oct 24 04:32:05 hostname kernel: device-mapper: multipath: Failing path 8:32.
Oct 24 04:32:05 hostname multipathd: mpathf: failed in domap for removal of path sdk
Oct 24 04:32:05 hostname multipathd: uevent trigger error
Oct 24 04:32:05 hostname multipathd: 8:32: mark as failed
Oct 24 04:32:05 hostname multipathd: data3: Entering recovery mode: max_retries=6
Oct 24 04:32:05 hostname multipathd: data3: remaining active paths: 0