Re: inotify like service for an entire mount point?

[SandeepKsinha <sandeepksinha@gmail.com>]

Hi Greg,

On Mon, Aug 3, 2009 at 8:45 PM, Greg Freemyer<greg.freemyer@gmail.com> wrote:
>
> John, Robert, others,
>
> I'm working with the ohsm team on a new kernel module and we need a
> way as an example to be notified of every file creation event on a
> filesystem so we can determine which storage tier a new file should be
> allocating data blocks from.
>
> I believe inotify needs a watch item for every directory it is
> watching, so in theory we could walk the directory structure somehow
> and register every directory with inotify.  That seems like an
> excessive amount of overhead for what seems like a simple to implement
> need.
Look for:

int inotifytools_watch_recursively (char const *path, int events) on
http://inotify-tools.sourceforge.net/api/inotifytools_8h.html


>
> So a couple questions:
>
> Can inotify currently be told to monitor an entire mount point?
>

May be the above could help.

> Would a patch to enable inotify to do so be entertained?  If so, what
> about one that added the ability to just the kernel API.  (We have no
> need of it in userspace at present.)
>
> Is there an alternate pre-existing linux kernel solution?
>

Is the mapping functionality for (inotifytools_watch_recursively)
exported in the kernel.

It would really be great if we hear from the experts.
Kindly suggest. And correct me If I am gone wrong somewhere.


> Thanks
> Greg
> --
> Greg Freemyer
> Head of EDD Tape Extraction and Processing team
> Litigation Triage Solutions Specialist
> http://www.linkedin.com/in/gregfreemyer
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>


we can specify the mount point

i suppose to watch
11:29 PM
this was the last release

1 January 2008: inotify-tools 3.13 released. Changes:

Fix: `--timefmt' option to inotifywait doesn't work (broken in 3.12)

http://inotify-tools.sourceforge.net/

will it support the new kernel

Regards,
Sandeep.

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