What I do in my day job (which may not be what is wanted here) is to run
'incrond' as a system service so that it picks up all file system events as
they occur without a dependency on application services. There is indeed the
problem though that if events occur when the inotify/incron monitoring is off
they are lost so, if you can't rely on system configuration to keep incrond
up, you would need to do a full file system scan to pick up changes since dt
last ran.
Rgds,
Rob.
From: johannes hanika [mailto:hana...@gmail.com]
Sent: 14 October 2013 14:39
To: Rob Z. Smith
Cc: darktable-devel
Subject: Re: [darktable-devel] xml sidecar files and other programs
On Mon, Oct 14, 2013 at 3:26 PM, Rob Z. Smith
<rzsm...@nhbc.co.uk<mailto:rzsm...@nhbc.co.uk>> wrote:
I've found it very easy and efficient to do that sort of stuff with 'inotify'
where you can pretty much instantly call an application/script based on system
file-open/close/modify/read event and don't need to do any scanning. It only
works on files or directories though - not a hierarchical directory tree.
we had support for that in dt a year ago or so (nobody really depended on it,
so we deleted the code). how do you check whether a file changed behind your
back while dt wasn't running?
j.
Rgds,
Rob.
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
I think you would need to setup some file system notification thing to find
out if and when an xmp file changed. i have no idea how you would do that if dt
isn't running already. you would need to rescan all your xmp (several 10k for
me) at startup. unless there is a clever way to prune that (hierarchical
checksums with support in the file system..?) i think i'm not willing to pay
the performance penalty for this..
you can also re-read the xmp as soon as an image turns up in lighttable mode..
but that would not read new tags etc which potentially affect your collection.
so if you collect by a certain tag and load xmp on demand your lighttable view
might jump and keep adding/removing images.
j.
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