Date: Thu, 26 Jul 2001 19:42:32 +0200 (CEST) From: Alexander Leidinger <Alexander@Leidinger.net> To: gabriel_ambuehl@buz.ch Cc: freebsd-isp@freebsd.org, freebsd-cluster@freebsd.org, jlemon@FreeBSD.org Subject: Monitoring a FS with kevent (was: Re: Redundant setup on a budget??) Message-ID: <200107261742.f6QHgXv06426@Magelan.Leidinger.net> In-Reply-To: <19297458367.20010726142352@buz.ch>
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On 26 Jul, Gabriel Ambuehl wrote:
>>> On the first glance it looks pretty complex but...
>> It depends...
>
> Read through it a bit more concentrated today and found it probably
> doesn't help anyway:
>
> EVFILT_VNODE Takes a file descriptor as the identifier and the
> events
> to watch for in fflags, and returns when one or
> more of
> the requested events occurs on the descriptor.
> The events
> to monitor are:
>
> I interpret this like it's good for monitoring single vnodes, but not
> entire filesystem.
Yes, you have to walk through the entire FS and request a notification
for every file or directory. But perhaps the developer (CCed) is able to
add the "monitor the entire FS for me" functionality in the kernel...
Jonathan, we are talking about soft-realtime mirroring of an entire FS
(or doing something like realtime-tripwire).
Bye,
Alexander.
--
The computer revolution is over. The computers won.
http://www.Leidinger.net Alexander @ Leidinger.net
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