[sync-services-developers] Sync Services deleting all data unexpectedly.

[Martin Redington]

I think I've got some good data on this, and, if it keep happening
(grrr) I'll be collecting even better data with my next release.

When I get a chance, I'll sit down and analyse what I've got so far.

    cheers,
               m.

On 11/21/05, Brian M. Criscuolo <bcriscuolo at markspace.com> wrote:
> Martin,
>
> I've seen it in slow sync mode a few times. If the entire data set
> isn't pushed into the truth whatever is missing is flagged as a
> delete. I've quickly deleted entire groups of calendars in iCal that
> way - along with all the events!
>
> I've heard the anecdotal reports as well. Here's one from a customer
> of ours. I'm sure that we're involved in some way, but this isn't
> something that I can reproduce:
>
> "I decided to try a little more testing (nothing better to do on a
> sunny Saturday afternoon apparently). On the handheld I created a
> fake contact and did a (contacts only) sync. I was initially happy
> because the fake contact was in my Address Book on the Mac! Yikes, I
> then noticed that most (but not all) of the groups that I had created
> (weeks ago on the Mac) were GONE from Address Book. So I reverted to
> the Address Book database that I had saved this morning before using
> 5.0.2. Sure enough, they were still there. So I synced again,
> assuming that the contact that had been added to the Palm would once
> again be added to the Address Book and I'd watch and see what
> happened to my groups. The groups were fine this time (what the heck
> is going on?) but the contact on the Palm was not added to Addy Book.
> Hmmm, so I checked the Palm, it wasn't there anymore either. OK...So
> I created the Fake Contact on the Palm again and synced again. Now
> the groups are still there in the Addy Book and so is the Fake
> Contact. So I deleted the Fake Contact on the Mac and synced again.
> Now it's gone on the Mac and on the Palm and my groups seem OK. So
> everything is now OK....right? I wish I knew."
>
> I'll try to pay more attention to things like this and maybe we can
> work out a pattern.
>
> b
>
> On Nov 20, 2005, at 6:04 AM, Martin Redington wrote:
>
> > Has anyone else seen Sync Services delete all their data unexpectedly?
> >
> > I've had three user reports of this now - the symptoms seem to be that
> > one machine suddenly decides that it doesn't need its data any more,
> > and then propagates the deletes via sync services to other sync
> > clients, but I'm still collecting more detailed diagnostics to send to
> > Apple.
> >
> > I've heard some anecdotal reports of data loss when people moved to
> > Tiger, but these were all end-user reports IIRC.
> >
> > I always sync in default (fast sync) mode, so its hard to see how all
> > of the data could get trashed ...
> >
> >    cheers,
> >            Martin
> >
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>
>
> ********************
> Brian M. Criscuolo
> Senior Software Engineer
> Mark/Space, Inc.
> bcriscuolo at markspace.com
> <http://www.markspace.com>
>
>
>
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