[digiKam-users] Sharing Database/Collections
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Is there a good way to share my collection on different computers like you
can with certain apps using dropbox? I would like to be able to work on my collections on a laptop when away and then be able to sync with my desktop. Is this possible? Thx -- Sent from: http://digikam.1695700.n4.nabble.com/digikam-users-f1735189.html |
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On 9/10/19 5:44 PM, tsader wrote:
> Is there a good way to share my collection on different computers like you > can with certain apps using dropbox? > > I would like to be able to work on my collections on a laptop when away and > then be able to sync with my desktop. > > Is this possible? > Yes, I do it with rsync and ssh -- Maderios |
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Would you mind sharing the process?
-- Sent from: http://digikam.1695700.n4.nabble.com/digikam-users-f1735189.html |
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In reply to this post by tsader
Yes, it's possible. There are several ways.
The easiest one: Share your pictures in a network folder, install digikam in every computer you want to use it, and use that shared folder. If changes and metadata are saved to the files or sidecars, other computers will detect and update the changes when you start digikam. For that, you will need a server (NAS) with a hard drive containing your picture library. Another option: as you mentioned, using some service like dropbox, google drive, owncloud... and sync the picture folder. Use that folder in digikam. All computers using that service should be automatically updated. -- Sent from: http://digikam.1695700.n4.nabble.com/digikam-users-f1735189.html |
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But I wanna be able to work on the collections when I have no access to the
network folder. I wanna be able to work on, organize my collections when I am away and then sync the changes. All I have figured out is how to use the same database but not the same folder/images. I can see the same images/thumbnails but I am not able to view them in previews -- Sent from: http://digikam.1695700.n4.nabble.com/digikam-users-f1735189.html |
Re: Sharing Database/Collections
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On mercredi 18 septembre 2019 15:37:20 CEST tsader wrote:
> But I wanna be able to work on the collections when I have no access to the > network folder. > > I wanna be able to work on, organize my collections when I am away and then > sync the changes. > Not possible if your collections are on a network share and you have no access to it... > All I have figured out is how to use the same database but not the same > folder/images. I can see the same images/thumbnails but I am not able to > view them in previews > That seems to indicate that you have duplicated the database to local storage. Thumbnails are stored in the database. Remco. |
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I would love to have such functionality too but that would require a whole lot coding for the devs to implement it. Maybe one day... Sent from my Samsung Galaxy smartphone. -------- Original message -------- From: Remco Viëtor <[hidden email]> Date: 2019-09-18 8:35 a.m. (GMT-07:00) To: digiKam - Home Manage your photographs as a professional with the power of open source <[hidden email]> Subject: Re: [digiKam-users] Sharing Database/Collections > But I wanna be able to work on the collections when I have no access to the > network folder. > > I wanna be able to work on, organize my collections when I am away and then > sync the changes. > Not possible if your collections are on a network share and you have no access to it... > All I have figured out is how to use the same database but not the same > folder/images. I can see the same images/thumbnails but I am not able to > view them in previews > That seems to indicate that you have duplicated the database to local storage. Thumbnails are stored in the database. Remco. |
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I have been using Media Pro like this. I work on the same Catalog/Albums on
two different machines and have the image folder copied on both. When I do all my work on one machine I later sync it with other by backing up the Albums and Folder with chronosync which only syncs the changes and not copying over everything again. I tried that method with Digikam but it doesn't like the changes made to the images folder or maybe I am not doing something right. -- Sent from: http://digikam.1695700.n4.nabble.com/digikam-users-f1735189.html |
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I do not think digiKam can do that... On Wed, Sep 18, 2019 at 10:19 AM tsader <[hidden email]> wrote: I have been using Media Pro like this. I work on the same Catalog/Albums on |
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I just found an interesting way to do that if you are familiar with git, even if it's not really trivial. You can use the amazing "git annex" project to version control your collection, and even keep a partial version of it locally. Git-annex allows you to sync it between several ''remotes" (can be usb key, or even encrypted google doc…), and keep only the part of the collection you want locally (git-annex always make sure that the file is always present on at least one remote before dropping the files). And all classic text files are version controlled, as with classic git.
Now, the idea is to ask digikam to store metadata *in an external xmp files* (git-annex turn all big files in read only mode, so you won't be able to include metadata inside the photo directly). These xmp files would then be kept in the git repo, and you should now be able to merge the two repos when you synchronize again two remotes. (NB: I've not tested this myself, but I know people have been using it) Now, if you don't want to use sidecar xmp files, git-annex provides a wax to add metadata to any file. That way, you can say "keep on my computer only files with at least 3 stars". And I *think* (to be checked) that these metadata are also mergeable. Usually, they are exported from exif info, but you can specify manually new metadata for each file. The only issue is that digikam does not support this kind of tagging. I saw a thread where somebody wanted to implement git-annex metadata in digikam, but as far as I know the project was not finished. Hope it can help, -- tobiasBora Le 18 septembre 2019 18:23:34 GMT+02:00, Andrey Goreev <[hidden email]> a écrit :
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I am not very familiar with Git-annex but I gave it another try with my way.
Also there doesn't seem to be a Mojave version I have the Digikam databases on my Desktop and Albums/collection folders on Desktop too. Then I use Chronosync to backup both to my Laptop. On my laptop, I open Digikam and in preferences, I have to link the collections to the new location on my laptop. Again, I make my changes, backup to my Dekstop. It works fine except of course that I always have to change the location of the collections in the preferences. Which is ok I suppose. The only downside is that if you delete a thumbnail and you keep it in the digikam trash folder and then sync everything back to the other platform, you won't see the change. You will see the same thumbnail in the collection because it is linked to the new collection folder. So one has to immediately delete the image permanently or things will become confusing -- Sent from: http://digikam.1695700.n4.nabble.com/digikam-users-f1735189.html |
Re: Sharing Database/Collections
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In reply to this post by AndriusWild
Andrey Goreev wrote:
> I do not think digiKam can do that... Shouldn't this work if the collection is in a cloud folder like Nextcloud (or Dropbox, FWIW)? If you make changes to photo or an album (i.e. just the file or photo) on one machine then the changes are synchronized to all machines that share these folders, and if you start DK next time it will detect the changes and update the local database accordingly. But of course this is only going to work if you write tags and other metadata to the image file or a sidecar file. If you have configured DK to *not* write metadata (tags etc.) to the files but keep them only in the DB you'd have to synchronize the database in a consistent way, which can be much harder. Martin |
Re: Sharing Database/Collections
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Þann 19.9.2019 08:49, skrifaði Martin Burnicki:
> Andrey Goreev wrote: >> I do not think digiKam can do that... > > Shouldn't this work if the collection is in a cloud folder like > Nextcloud (or Dropbox, FWIW)? > > If you make changes to photo or an album (i.e. just the file or photo) > on one machine then the changes are synchronized to all machines that > share these folders, and if you start DK next time it will detect the > changes and update the local database accordingly. > > But of course this is only going to work if you write tags and other > metadata to the image file or a sidecar file. > > If you have configured DK to *not* write metadata (tags etc.) to the > files but keep them only in the DB you'd have to synchronize the > database in a consistent way, which can be much harder. > IMHO it could be instructive to set up Nextcloud on a NAS over a LAN, and try out how Digikam reacts to such synchronization - both databases and image files. Probably I will test this kind of a setup, but not until late October when time permits. Nextcloud/OwnCloud has fine-grained access-controls for users/groups and sharing, and has pretty advanced mechanisms for resolving conflicts in case of simultaneous edits. I presume that if using a synchronized database one would have to share _all_ the files in each local collection _and_ the paths would have to be the same on all devices, right? Anything else obvious? Best regards, Sveinn í Felli |
Re: Sharing Database/Collections
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Le jeu. 19 sept. 2019 à 11:33, Sveinn í Felli <[hidden email]> a écrit : Þann 19.9.2019 08:49, skrifaði Martin Burnicki: yes, it's the best configuration but not the best design to work on multiple computer with a common database. Also remember that no lock mechanism exists yet in DK database interface. So concurrent DB acess at the same time can corrupt data. We have plenty of report/whish in bugzilla about this topic. We need to found a good student to work on this project. DB is an important part of DK. Best Gilles Caulier
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Re: Sharing Database/Collections
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In reply to this post by Sveinn í Felli-2
On jeudi 19 septembre 2019 11:32:43 CEST Sveinn í Felli wrote:
> Þann 19.9.2019 08:49, skrifaði Martin Burnicki: > > Andrey Goreev wrote: > >> I do not think digiKam can do that... > > > > Shouldn't this work if the collection is in a cloud folder like > > Nextcloud (or Dropbox, FWIW)? > > > > If you make changes to photo or an album (i.e. just the file or photo) > > on one machine then the changes are synchronized to all machines that > > share these folders, and if you start DK next time it will detect the > > changes and update the local database accordingly. > > > > But of course this is only going to work if you write tags and other > > metadata to the image file or a sidecar file. > > > > If you have configured DK to *not* write metadata (tags etc.) to the > > files but keep them only in the DB you'd have to synchronize the > > database in a consistent way, which can be much harder. > > IMHO it could be instructive to set up Nextcloud on a NAS over a LAN, > and try out how Digikam reacts to such synchronization - both databases > and image files. Probably I will test this kind of a setup, but not > until late October when time permits. > > Nextcloud/OwnCloud has fine-grained access-controls for users/groups and > sharing, and has pretty advanced mechanisms for resolving conflicts in > case of simultaneous edits. > > I presume that if using a synchronized database one would have to share > _all_ the files in each local collection _and_ the paths would have to > be the same on all devices, right? > > Anything else obvious? OP seems to want to be able to use a shared collection, and modify it, *without* network access, e.g. while travelling. That will mean he will have to keep a copy of his collections on his local hard drive, and sync after each trip. If he's the only user of those collections, then the easiest would be to copy collections and database(s) back and forth. That seems to be what he does now. Having Digikam detect changes can be very slow, especially over a network (too many files to read). Remco. |
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In reply to this post by Sveinn í Felli-2
I thought the author wanted to cache images from NAS to a laptop while on LAN then work on the cached images while on a road and then sync the changes back to NAS when back home. It is a brilliant idea but I don't think digiKam can do that. Sent from my Samsung Galaxy smartphone. -------- Original message -------- From: Sveinn í Felli <[hidden email]> Date: 2019-09-19 3:32 a.m. (GMT-07:00) To: [hidden email] Subject: Re: [digiKam-users] Sharing Database/Collections > Andrey Goreev wrote: >> I do not think digiKam can do that... > > Shouldn't this work if the collection is in a cloud folder like > Nextcloud (or Dropbox, FWIW)? > > If you make changes to photo or an album (i.e. just the file or photo) > on one machine then the changes are synchronized to all machines that > share these folders, and if you start DK next time it will detect the > changes and update the local database accordingly. > > But of course this is only going to work if you write tags and other > metadata to the image file or a sidecar file. > > If you have configured DK to *not* write metadata (tags etc.) to the > files but keep them only in the DB you'd have to synchronize the > database in a consistent way, which can be much harder. > IMHO it could be instructive to set up Nextcloud on a NAS over a LAN, and try out how Digikam reacts to such synchronization - both databases and image files. Probably I will test this kind of a setup, but not until late October when time permits. Nextcloud/OwnCloud has fine-grained access-controls for users/groups and sharing, and has pretty advanced mechanisms for resolving conflicts in case of simultaneous edits. I presume that if using a synchronized database one would have to share _all_ the files in each local collection _and_ the paths would have to be the same on all devices, right? Anything else obvious? Best regards, Sveinn í Felli |
Re: Sharing Database/Collections
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In reply to this post by Sveinn í Felli-2
Sveinn í Felli wrote:
> Þann 19.9.2019 08:49, skrifaði Martin Burnicki: >> Andrey Goreev wrote: >>> I do not think digiKam can do that... >> >> Shouldn't this work if the collection is in a cloud folder like >> Nextcloud (or Dropbox, FWIW)? >> >> If you make changes to photo or an album (i.e. just the file or photo) >> on one machine then the changes are synchronized to all machines that >> share these folders, and if you start DK next time it will detect the >> changes and update the local database accordingly. >> >> But of course this is only going to work if you write tags and other >> metadata to the image file or a sidecar file. >> >> If you have configured DK to *not* write metadata (tags etc.) to the >> files but keep them only in the DB you'd have to synchronize the >> database in a consistent way, which can be much harder. >> > > IMHO it could be instructive to set up Nextcloud on a NAS over a LAN, > and try out how Digikam reacts to such synchronization - both databases > and image files. Probably I will test this kind of a setup, but not > until late October when time permits. Hm, this sounds as if you intend to work directly on the NAS, across the LAN. This won't work when the NAS is not accessible, e.g. from a laptop that has no network connection. My suggestion would be to have a local copy of the collection on the laptop, so you can edit images, and reorder images and albums locally on your laptop, as required. When the laptop has a network connection again, the edited/moved files and folders would be first synchronized to the cloud, and then to other machines (e.g. PCs) that share the same collection folders. If you start DK on one of the other machines it detects the changes and updates its DB. This also works in the reverse direction: if you make changes on the PC then the changes will be synchronized to the laptop when the laptop is powered up next time with a network connection. > Nextcloud/OwnCloud has fine-grained access-controls for users/groups and > sharing, and has pretty advanced mechanisms for resolving conflicts in > case of simultaneous edits. > > I presume that if using a synchronized database one would have to share > _all_ the files in each local collection _and_ the paths would have to > be the same on all devices, right? Right. That's what I meant, see above. But of course you could organize your collection in a way that only specific albums/folders are synchronized via the cloud. However, from my understanding, synchronizing the DB between the machine will only work without problems if you use sqlite as DB, and if all machines run the same DK version, i.e. expect the same DB layout. If your DB uses mysql then I'd expect that you run into huge problems if you try to synchronized the DB by just synchronizing its files. If you keep the databases only locally then there should be no problems at all, if you only synchronize files and folders, even if you run different version of DK on different machines. But, as said earlier, this works for metadata (tags etc.) only if they are written into the image or sidecar files. Martin |
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In reply to this post by Martin Burnicki-2
Unfortunately, Dropbox/Nextcloud isn't an option for me because I don't have
enough storage space in the cloud -- Sent from: http://digikam.1695700.n4.nabble.com/digikam-users-f1735189.html |
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In reply to this post by tsader
tsader wrote
> I would like to be able to work on my collections on a laptop when away > and > then be able to sync with my desktop. This is what I want to do also. You can sync the actual photos using something like rsync, but the problem is the database. You have to alter the database so that it finds the collections on the one machine, then alter it again so it finds the collections on the other machine. I thought that this would require only changing one line for each collection in the AlbumRoots table. This does seem to work, except that it seems to cause each individual photo to be examined again by digikam when it starts up. I am fervently hoping that there is a way around this -- probably some other necessary change I have overlooked. In any case, this /will/ work provided you don't mind digikam taking a long time to start up each time you switch from one machine to the other. Is that adequate for you? -- Sent from: http://digikam.1695700.n4.nabble.com/digikam-users-f1735189.html |
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On 9/29/19 1:37 PM, BensonBear wrote:
> tsader wrote >> I would like to be able to work on my collections on a laptop when away >> and >> then be able to sync with my desktop. > > This is what I want to do also. You can sync the actual photos using > something like rsync, but the problem is the database. You have to alter > the database so that it finds the collections on the one machine, then alter > it again so it finds the collections on the other machine. > You can sync Mariadb databases with Replication https://mariadb.com/kb/en/library/replication-overview/ HOWTO Use rsync To Synchronise MySQL Databases http://mah.everybody.org/docs/mysql-rsync -- Maderios |
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