Desktop freeze on NFS share failure

[Emmett Culley]

On 08/16/2015 12:51 PM, Patrick O'Callaghan wrote:
> On Sun, 2015-08-16 at 14:11 -0400, Adam Batkin wrote:
>> On 08/16/2015 07:01 AM, Rex Dieter wrote:
>>> Emmett Culley wrote:
>>>
>>>> Why does the desktop freeze whenever an NFS share fails?  I have
>>>> set all
>>>> NFS mounts to soft,intr and yet, if I forget to unmount a share
>>>> before
>>>> taking down the NFS server, my desktop freezes.
>>>>
>>>> Luckily I have Yakauke running, so I can at least get to a
>>>> console.  But
>>>> of course the NFS mount cannot be umounted if it doesn't respond.
>>>>
>>>> Also I assumed the setting shares to intr, soft would prevent
>>>> other
>>>> software from hanging if the share stops responding.  Is that not
>>>> so?  Or
>>>> is there another setting I am not aware of?
>>>>
>>>> Any ideas how to prevent this from happening?
>>>
>>>
>>> It not *that* different to when a (mounted) disk stops working.
>>>   I'd
>>> recommend focusing on simply avoiding that situation.
>>
>> I assume that you were referring to local (physical) disks.
>>
>> Regardless, I disagree: Failure happens and software should at least
>> *attempt* to be resilient.
>>
>> If I'm asking Konqueror or Dolphin to access a broken mount (local or
>> network) then I understand if it hangs (though that could be avoided
>> too, even if it just displays a "loading" indicator since it
>> obviously
>> can't get any further).
>>
>> But for general operations I would expect that nothing should hang.
>> This
>> is a solvable problem, and suggesting that people should avoid hung
>> mounts isn't helpful given that usually (this particular situation
>> excepted) they are totally unavoidable. A hung desktop is never
>> acceptable.
> 
> +1
> 
> poc
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> 
OK, so I am not the only one :-)

I agree that the system shouldn't hang if an NFS share fails, any more that it should hang if I attempt to access an off-line server via fish (ssh), which it doesn't do.

Is it worth reporting a bug, or are we stuck with this (lack of ) functionality? 

Emmett