Description

The router was down or unreachable.

Symptoms

>> Below output was seen on Console of the router.

g_vfs_done():da1s1f[WRITE(offset=8192, length=2048)]error = 5
watchdog: scheduling fairness gone for 480 seconds now.
watchdog: scheduling fairness gone for 500 seconds now.
watchdog: scheduling fairness gone for 520 seconds now.
watchdog: scheduling fairness gone for 540 seconds now.
watchdog: scheduling fairness gone for 560 seconds now.
watchdog: scheduling fairness gone for 580 seconds now.
watchdog: scheduling fairness gone for 600 seconds now.
watchdog: scheduling fairness gone for 620 sec

>> Requested customer to power cycle the router. During boot-up saw below logs after File system checks.

***** FILE SYSTEM MARKED CLEAN *****
** /dev/da1s1f
FILE SYSTEM CLEAN; SKIPPING CHECKS
clean, 1608347 free (339 frags, 201001 blocks, 0.0% fragmentation)
tunefs: soft updates remains unchanged as disabled
hw.re.gres_sync_other: 0 -> 1
umass1: Invalid CSW: sig 0x53000000 should be 0x53425355
watchdog: scheduling fairness gone. Too much high-priority workload!

Solution

>> g_vfs_done() logs is seen when RE has gone bad.
>> If you see such logs during boot-up or on the console, then go ahead with RMA of RE. In the case of MX5 model, all the FRU's are built-in. You need to raise RMA with Midplane serial number. Please co verify this with the command output of "show chassis hardware".

Modification History

2024-05-25 : Article Created