Re: [Nbd] NBD, DISCARD/TRIM

[Wouter Verhelst <w@...112...>]

On 30-03-13 12:21, Alex Bligh wrote:
> 
> On 29 Mar 2013, at 17:32, Wouter Verhelst wrote:
> 
>>
>> Actually, I am eating SIGCHLD; nbd-client.c, line 607. I suppose we
>> can't deal with this any other way?
> 
> For this particular case, can't you simply set the signal mask to 'ignore'?

I suppose, yes.

> However, if you ever want to be able to receive signals and process them
> (e.g. to dump some stats) you are going to have to deal with ERESTARTSYS
> or EAGAIN anyway. I think I'd rather do that and avoid the fragility.

We can't do that in nbd-client -- at least not unless the API is changed
away from the NBD_DO_IT ioctl (Note that I'm not advocating that).

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