Re: ktrace on NFSroot failing?

From: John Baldwin <jhb_at_FreeBSD.org>
Date: Fri, 25 Mar 2022 21:32:05 UTC 
On 3/10/22 8:14 AM, Mateusz Guzik wrote:
> On 3/10/22, Bjoern A. Zeeb <bzeeb-lists@lists.zabbadoz.net> wrote:
>> Hi,
>>
>> I am having a weird issue with ktrace on an nfsroot machine:
>>
>> root:/tmp # ktrace sleep 1
>> root:/tmp # kdump
>> -559038242  Events dropped.
>> kdump: bogus length 0xdeadc0de
>>
>> Anyone seen something like this before?
>>
> 
> I just did a quick check and it definitely fails on nfs mounts:
> # ktrace pwd
> /root/mjg
> # kdump
> -559038242  Events dropped.
> kdump: bogus length 0xdeadc0de
> 
> I don't have time to look into it this week though.

Possibly related: core dumps are no longer working for me on NFS
mounts.  I get a 0 byte foo.core instead of a valid core dump.

-- 
John Baldwin