Re: feature idea

[Bryce Ryan <br...@priscilla.ultima.org>]

My mailer says that Brian Behlendorf said:
> 
> with log rotation currently, if you want to have the server wake up and 
> start logging somewhere else, you send it a HUP - but this also has the 
> effect of killing whatever transfers are in progress.  For most sites 
> this is noise since it happens late at night; but for some involved in 
> large-file downloads (we're setting up a site with 10 megabyte TIFFs for 
> example) this is something of a "bug".  Any ideas on how to ameliorate 
> this?  
> 

i've been thinking about this problem myself, for some time.  For sysadmin
type geeks, the problem is very similar to what needs to get done when
shutting down a multi-threaded OS:  one synchronizes the file system.
Apache needs a "sync" function to pull this one off, since all open file
descriptors will need to be closed and reopened.

I think one might accomplish this by fielding/catching a different
signal that HUP, say, for example USR1, USR2 or CONT, serializing
all the children, mucking with the file descriptors, reopening them,
and continuing.

<big wave of hands :-) >

I can't say i've got an implementation handy, but this seems like the
direction i'd be taking if i were solving this problem.

-- 
=== Bryce Ryan ========= AMBIANCE ======== brycer@ultima.org ===
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