16 Feb
2012
16 Feb
'12
5:13 p.m.
On Thu, Feb 16, 2012 at 16:57, Thomas Mortagne <thomas.mortagne(a)xwiki.com>wrote;wrote:
set
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Denis Gervalle
SOFTEC sa - CEO
eGuilde sarl - CTO
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On Thu, Feb 16, 2012 at 4:41 PM, Denis Gervalle
<dgl(a)softec.lu> wrote:
The default of the first, is the second however !
It's just a fallback to always provide something and
permanentDirectory has the exact same behavior...
On Thu, Feb 16, 2012 at 15:07, Thomas Mortagne
<
thomas.mortagne(a)xwiki.com>wroteote:
> On Thu, Feb 16, 2012 at 2:44 PM, Denis Gervalle <dgl(a)softec.lu> wrote:
> > On Thu, Feb 16, 2012 at 11:40, Thomas Mortagne <
> thomas.mortagne(a)xwiki.com>wroteote:
> >
> >> On Thu, Feb 16, 2012 at 11:07 AM, Caleb James DeLisle
> >> <calebdelisle(a)lavabit.com> wrote:
> >> > Hi,
> >> >
> >> > I'd like to switch filesystem attachments to begin using the
> persistent
> >> storage directory now instead of the work directory.
> >> > This means there's a new way of calculating where the attachments
will
> >> be stored so it might fail on
upgrade.
> >> > I would like to not do any migration and just add to the release
notes
> >> because:
> >> > #1, it doesn't cause any permanent harm so long as nobody adds
> >> attachments while it's in what is an obviously broken state.
> >> > #2 administrators who have FS attachments enabled are probably
going
> to
> >> know what's going on.
> >> > #3 migration code is scary, it requires lots of work and lots of
> review
> >> and even if it works,
> >> > people might feel violated having files shuffled around on their
> system
> >> without their permission.
> >> >
> >> > WDYT?
> >>
> >> +1 and +1 for no migration by default too. If admin did his job
> >> properly, work dir and permanent dir are supposed to be the same
> >>
> >
> > I do not fully agree. My work dir has always been been stored in a
place
> > like /var/cache, where the data is not
backup and has not real
importance
> > (I was not using filesystem attachement
obviously). This was the
default
> on
> > a debian install. On the other hand, permanentDirectory should be in
> > /var/lib, and be backed up. This is my setup right now with the patch
of
Caleb.
xwiki.work.dir was already supposed to be used for persisted datas and
there was xwiki.temp.dir for temporary stuff.
And, AFAIK, apart from the attachment storage,
what was stored there
where
mainly data that could be freely deleted.
No, xwiki.work.dir always been used for datas you wanted to keep after
a restard, the fact that it was not too critical to loose Lucene index
does not make it ok to rebuild the whole index all the time especially
for a big farm.
From FHS standard:
"/var/cache is intended for cached data from applications. Such data is
locally generated as a result of time-consuming I/O or calculation. The
application must be able to regenerate or restore the data."
This exactly what I am talking about, and by default on debian, work dir
goes there.
But this one does not fit attachment, which should go to:
"/var/lib : Variable state information. State information is generally used
to preserve the condition of an application (or a group of inter-related
applications) between invocations and between different instances of the
same application."
So even if the permanent directory was not intended that way, it fill the
gap allow this configuration.
What's in xwiki.properties is just a new
component oriented access to
the same thing and nothing new.
Anyway you would have use it properly if you were using filesystem
attachment so it does not really change the need for a migration.
Sure.
>
> >
> >
> >> anyway and if the permanent dir is not set then admin just need to > it and it OK.
>
> >
> > Caleb
> >
> > _______________________________________________
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>
>
>
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> Thomas Mortagne
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Denis Gervalle
SOFTEC sa - CEO
eGuilde sarl - CTO
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