[digikam] [Bug 377849] albums disappear when the network is interrupted.

[Maik Qualmann]

https://bugs.kde.org/show_bug.cgi?id=377849

Maik Qualmann  changed:

   What|Removed |Added

 CC||spam-recei...@web.de

--- Comment #36 from Maik Qualmann  ---
*** Bug 401338 has been marked as a duplicate of this bug. ***

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Maik Qualmann  changed:

   What|Removed |Added

 CC||h6918...@nwytg.net

--- Comment #35 from Maik Qualmann  ---
*** Bug 400669 has been marked as a duplicate of this bug. ***

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Maik Qualmann  changed:

   What|Removed |Added

 CC||djse...@home.nl

--- Comment #34 from Maik Qualmann  ---
*** Bug 399594 has been marked as a duplicate of this bug. ***

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--- Comment #33 from hardy.pub...@gmail.com ---
That version works well, many thanks.

I think showing the warning message with a single click would be fine too. Is
that what you meant?

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--- Comment #32 from Maik Qualmann  ---
Installer Win64:
https://drive.google.com/open?id=17V3GMrYAnYeVOPaBlZq_FF5uau4KD7wr

File   : digiKam-6.0.0-git-20180603T094233-Win64.exe
Size   : 164M
MD5 sum: 7c237ffc896a32f49d9d5dcb9141bef7
SHA1 sum   : 9db911fdc5822da6ed730b42616362013718618f
SHA256 sum : bb022f3b6a2997d94269c2886d8c14ce69db489d9476e5d7d1281e6190f6306c

Maik

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--- Comment #31 from Maik Qualmann  ---
Git commit 6d5c89784813321aa1280bbda4a3e8d809e96c88 by Maik Qualmann.
Committed on 03/06/2018 at 07:32.
Pushed by mqualmann into branch 'master'.

ignore mouse button release event for hide tool-tip

M  +0-1core/libs/widgets/itemview/itemviewtooltip.cpp

https://commits.kde.org/digikam/6d5c89784813321aa1280bbda4a3e8d809e96c88

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--- Comment #30 from Maik Qualmann  ---
Due to the system settings, a double click is used to invoke the preview, which
immediately makes the tool-tip disappear again. I will correct it. I know we
once had a bug report (but can not find it) and the double click is standard on
Windows. But would not a single click be better here?

Maik

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--- Comment #29 from hardy.pub...@gmail.com ---
Thanks. I installed the second version. When I double click on a thumbnail
while the  network is disabled, I briefly see a note saying 

"The storage location of this image is currently not available"

It's only displayed for about 0.5s so not long enough to read it. Please make
it linger for a longer time.

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--- Comment #28 from Maik Qualmann  ---
New digiKam-6.0.0 Windows test version from git/master.

Installer Win64:
https://drive.google.com/open?id=1M47NKpoVMhVKuLsqICdQ8ibmnBtEEttA

File   : digiKam-6.0.0-git-20180602T144349-Win64.exe
Size   : 164M
MD5 sum: 93f646dac62f6e37fd0a78752a973646
SHA1 sum   : 82c162fa189d0d71841f15b97d32e3647ebcbdb5
SHA256 sum : 7b2309cb38f5dcdd3a9d2a6b228a870bdfe8178bf35693d8d96077486e3e10d8

Maik

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Maik Qualmann  changed:

   What|Removed |Added

   Version Fixed In||6.0.0
 Resolution|--- |FIXED
 Status|REOPENED|RESOLVED
  Latest Commit||https://commits.kde.org/dig
   ||ikam/a97b4f780de9e9613ebea2
   ||af56d301ada4e7d153

--- Comment #27 from Maik Qualmann  ---
Git commit a97b4f780de9e9613ebea2af56d301ada4e7d153 by Maik Qualmann.
Committed on 02/06/2018 at 12:29.
Pushed by mqualmann into branch 'master'.

update collection locations if album root path not exists
FIXED-IN: 6.0.0

M  +2-1NEWS
M  +9-2core/libs/database/collection/collectionmanager.cpp
M  +0-6core/libs/database/collection/collectionscanner.cpp

https://commits.kde.org/digikam/a97b4f780de9e9613ebea2af56d301ada4e7d153

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--- Comment #26 from hardy.pub...@gmail.com ---
Raphael, IWBR, Weini, Does this solve your issue?

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--- Comment #25 from hardy.pub...@gmail.com ---
The test version looks good Maik, thank you very much.

When the Ethernet adapter is disabled I instantly get:

[18216] digikam.general: Detected change, triggering rescan of
"P:/digiKamTest/Phone Dump"
[18216] digikam.database: Starting scan!
[18216] digikam.database: The album root path does not exist - scan are
canceled


In this condition double clicking the thumbnail does not open the image, as
expected, but crucially the albums remain.

When this occurs, please can you add a dialogue message saying "The album root
path does not exist - Check network status." or similar.

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--- Comment #24 from Maik Qualmann  ---
This is a test version on my GDrive. The installer is compiled and created like
the other snapshots under Linux and is virus-free. The file is smaller because
I created it without debug symbols. Please test if the problem is resolved.


Installer Win64:
https://drive.google.com/open?id=17HQp7Bqwu0l5_h_2bGl48ZiODC_iGGWb

Checksum:
https://drive.google.com/open?id=1hDZwAbAkHjJevjD_u_wfGueV2HJ0U1Ou

Maik

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--- Comment #23 from Maik Qualmann  ---
Git commit 7e76a3cd872896e0e3532d43400ef549693ab43c by Maik Qualmann.
Committed on 01/06/2018 at 19:10.
Pushed by mqualmann into branch 'master'.

check if album root path exist before scanning

M  +6-0core/libs/database/collection/collectionscanner.cpp

https://commits.kde.org/digikam/7e76a3cd872896e0e3532d43400ef549693ab43c

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--- Comment #22 from hardy.pub...@gmail.com ---
I have a refined way to trigger the issue:

1) digiKam open in thumbnail view after scanning the collection.
2) Start DbgView.
3) In Control Panel\Network and Internet\Network Connections, right click
Ethernet adapter and click disable.
4) Without delay this time, the album(s) instantly disappear.

In the log below, the first entry is coincident with Steps 3/4.

It seems that "Starting Scan" and "Removed items" are premature actions if
there is no verifiable network connection.

Regardless, I wonder if sufferers of this problem might have Ethernet adapter
power saving options enabled. i.e. I do not have "Allow the computer to turn
off this device to save power" enabled as shown in the screenshot. I cannot
remember if this is the default or I switched this off manually which may
explain why I did have the issue and now I don't have the issue.



==

00010.  [2648] digikam.general: Detected change,
triggering rescan of "P:/digiKamTest/Phone Dump"   
00020.50904858  [2648] digikam.database: Starting scan! 
00030.51694995  [2648] digikam.database: Removed items: (1349,
1350, 1351, 1352, 1353, 1354, 1355, 1356, 1357, 1358, 1359, 1360, 1361, 1362,
1363, 1364, 1365, 1366, 1367, 1368, 1369, 1384, 1386, 1387, 1388, 1391, 1393,
1394, 1395, 1396, 1397, 1398, 1399, 1400, 1401, 1402, 1403, 1406, 1407, 1408,
1409, 1410, 1412, 1414, 1418, 1421, 1422, 1424, 1425, 1426, 1427, 1434, 1435,
1436, 1437, 1438, 1439, 1440, 1441, 1442, 1443, 1444, 1445, 1446, 1447, 1448,
1449, 1450, 1451, 1452, 1453, 1454, 1455, 1456, 1457, 1458, 1459, 1460, 1461,
1462, 1463, 1464, 1465, 1466, 1467, 1468, 1469, 1470, 1471, 1472, 1473, 1474,
1475, 1476, 1477, 1478, 1479, 1480, 1819, 2452, 2458, 2459, 2460, 2461, 2462,
2463, 2464, 2465, 2466, 2467, 2468, 2471, 2478, 2479, 2480, 2482, 2483, 2484,
2485, 2486, 2487, 2488, 2490, 2491, 2492, 2493, 2494, 2495, 2496, 2498, 2499,
2500, 2502, 2503, 2506, 2507, 2508, 2510, 2513, 2514, 2516, 2518, 2519, 2520,
2521, 2522, 2523, 2524, 2563, 2564, 2565, 2566, 2567, 2568, 2569, 2570, 2571,
2572, 2573, 2574, 2575, 2576, 2758, 3177, 3178, 3245, 3246, 3247) related
items: ()  
00040.53222328  [2648] digikam.database: Folder does not exist
or is not readable:  "P:/digiKamTest/Phone Dump" 
00050.63326788  [2648] digikam.geoiface:    
00060.63795233  [2648] digikam.geoiface:    
00070.63811100  [2648] digikam.general: Using  2  CPU core to
run threads   
00080.63897473  [2648] digikam.general: Stacked View Mode :  2  
00090.64360756  [2648] digikam.general: Action Thread run  1 
new jobs  
00100.75454795  [2648] digikam.general: Data From DBJobsThread
is null:  true   
00110.76419008  [2648] digikam.general: Cancel Main Thread  
00120.77185392  [2648] digikam.general: One job is done 
00130.78981644  [2648] digikam.geoiface:    
00140.79946679  [2648] digikam.general: Cancel Main Thread  
00150.81840372  [2648] digikam.general: Using  2  CPU core to
run threads   
00160.81938356  [2648] digikam.general: Action Thread run  1 
new jobs  
00170.82079357  [2648] digikam.general: Data From DBJobsThread
is null:  true   
00180.82084709  [2648] digikam.general: Cancel Main Thread  
00190.82092232  [2648] digikam.general: One job is done 
00200.82102710  [2648] digikam.general: Cancel Main Thread

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--- Comment #21 from hardy.pub...@gmail.com ---
Created attachment 112989
  --> https://bugs.kde.org/attachment.cgi?id=112989=edit
Power Saving Off

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--- Comment #20 from hardy.pub...@gmail.com ---
I can reproduce the problem at will now:

If I have...
1) digiKam open in thumbnail view after scanning the collection
2) then start DbgView.
3) then pull out Ethernet cable
4) then double click a thumbnail.
Then
5) I get Windows blue spinning wheel for about 15 seconds.
6) Then the album(s) is removed from the albums list and it returns to "Welcome
to digiKam" page.


The bad news is that the log below does not show anything useful. The first
entry 0001 occurs at Step 6).


00010.  [10060] digikam.dimg: File 
"P:/digiKamTest/Phone Dump/01.jpg"  does not exist  
00020.01410834  [10060] digikam.dimg: File 
"P:/digiKamTest/Phone Dump/01.jpg"  does not exist  
00030.01456402  [10060] digikam.metaengine: Cannot load
metadata from file   (Error # 9 :  P:/digiKamTest/Phone Dump/01.jpg: Failed to
open the data source: No such file or directory (errno = 2)  
00040.01519299  [10060] digikam.general: Detected change,
triggering rescan of "P:/digiKamTest/Phone Dump"  
00050.01639067  [10060] digikam.dimg: File 
"P:/digiKamTest/Phone Dump/01.jpg"  does not exist  
00060.01658720  [10060] digikam.dimg: "P:/digiKamTest/Phone
Dump/01.jpg"  : Unknown image format !!!
00070.01665337  [10060] digikam.general: Cannot extract preview
for  "P:/digiKamTest/Phone Dump/01.jpg" 
00080.01682666  [10060] digikam.general: Cannot extract preview
for  "P:/digiKamTest/Phone Dump/01.jpg" 
00090.01932679  [10060] digikam.general: Stacked View Mode :  1 
00100.52178597  [10060] digikam.database: Starting scan!
00110.53882611  [10060] digikam.database: Removed items: (1349,
1350, 1351, 1352, 1353, 1354, 1355, 1356, 1357, 1358, 1359, 1360, 1361, 1362,
1363, 1364, 1365, 1366, 1367, 1368, 1369, 1384, 1386, 1387, 1388, 1391, 1393,
1394, 1395, 1396, 1397, 1398, 1399, 1400, 1401, 1402, 1403, 1406, 1407, 1408,
1409, 1410, 1412, 1414, 1418, 1421, 1422, 1424, 1425, 1426, 1427, 1434, 1435,
1436, 1437, 1438, 1439, 1440, 1441, 1442, 1443, 1444, 1445, 1446, 1447, 1448,
1449, 1450, 1451, 1452, 1453, 1454, 1455, 1456, 1457, 1458, 1459, 1460, 1461,
1462, 1463, 1464, 1465, 1466, 1467, 1468, 1469, 1470, 1471, 1472, 1473, 1474,
1475, 1476, 1477, 1478, 1479, 1480, 1819, 2452, 2458, 2459, 2460, 2461, 2462,
2463, 2464, 2465, 2466, 2467, 2468, 2471, 2478, 2479, 2480, 2482, 2483, 2484,
2485, 2486, 2487, 2488, 2490, 2491, 2492, 2493, 2494, 2495, 2496, 2498, 2499,
2500, 2502, 2503, 2506, 2507, 2508, 2510, 2513, 2514, 2516, 2518, 2519, 2520,
2521, 2522, 2523, 2524, 2563, 2564, 2565, 2566, 2567, 2568, 2569, 2570, 2571,
2572, 2573, 2574, 2575, 2576, 2758, 3177, 3178, 3245, 3246, 3247) related
items: () 
00120.56052071  [10060] digikam.database: Folder does not exist
or is not readable:  "P:/digiKamTest/Phone Dump"
00130.64725453  [10060] digikam.geoiface:   
00140.65683210  [10060] digikam.geoiface:   
00150.65709949  [10060] digikam.general: Using  2  CPU core to
run threads  
00160.65866703  [10060] digikam.general: Stacked View Mode :  2 
00170.65894783  [10060] digikam.general: Action Thread run  1 
new jobs 
00180.66701651  [10060] digikam.general: Data From DBJobsThread
is null:  true  
00190.66712683  [10060] digikam.general: Cancel Main Thread 
00200.66768330  [10060] digikam.general: One job is done
00210.94223034  [10060] digikam.general: Using  2  CPU core to
run threads  
00220.95756429  [10060] digikam.geoiface:   
00230.95942563  [10060] digikam.general: Action Thread run  1 
new jobs 
00240.96177846  [10060] digikam.general: Cancel Main Thread 
00250.98371530  [10060] digikam.general: Data From DBJobsThread
is null:  true  
00260.98453760  [10060] digikam.general: Cancel Main Thread 
00270.98461050  [10060] digikam.general: Cancel Main Thread 
00284.25723648  [10060] digikam.general: Using  2  CPU core to
run threads  
00294.25854921  [10060] digikam.general: Action Thread run  1 
new jobs 
00304.26113892  [10060] digikam.general: One job is done
00314.26151943  [10060] digikam.general: Cancel Main Thread

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--- Comment #19 from hardy.pub...@gmail.com ---
I just managed to trigger the problem by messing around with the Homeplug
adapter but I'm not sure of the sequence of events. 

Will try to isolate the trigger over the next few days and provide traces with
and without the problem.

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--- Comment #18 from Maik Qualmann  ---
The lines from the DebugView tool (download from Microsoft) would be
interesting if they interrupt the network connection while digiKam is running.

Maik

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--- Comment #17 from hardy.pub...@gmail.com ---
Also tried dismounting the network drive in Windows instead of removing the
Ethernet cable. Again digiKam was unaffected.

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--- Comment #16 from hardy.pub...@gmail.com ---
For what it's worth, I used to have this problem frequently (see 383711) but
the problem completely disappeared by itself. The only things that have changed
in that time are:

- Synology NAS DSM version minor updates.
- Windows 10 feature updates.
- DigiKam updates.
- Homeplug Ethernet adapters upgraded.


Just now I deliberately forced the problem by removing the Ethernet cable from
my PC, started the PC then opened DigiKam. All my photo thumbnails were present
and there was no attempt to rescan. I restarted again with the Ethernet cable
attached and everything was fine. No rescan.

Let me know if you need more info.

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--- Comment #15 from Maik Qualmann  ---
Today I tested digiKam-5.9.0 on a real Windows machine. When I look at the
messages in DebugView, it looks like Solid is working correctly, reporting
removed removable media and network shares. Only, the QFileSytemWatcher is most
faster as Solid. With digiKam-6.0.0 we have already delayed the external events
of QFilesytemWatcher by 2 seconds. Maybe it will be enough. Another idea, we
make the QFilesystemWatcher configurable. With an album selector everyone can
enabled the shared monitored albums. The resources of the QFileSytemWatcher are
limited, see Qt-Doc. Here on Linux, after about 3-4 albums, the kernel
resources are exhausted and no more albums are added to the monitoring. I think
that we generally monitor all albums is not a good idea.

Maik

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--- Comment #14 from caulier.gil...@gmail.com ---
Maik ,

> The main cause is probably missing Windows support in the Solid component.

This is exactly the main problem.

Solutions :

1/ Implement the missing code in Solid interface for Windows
2/ Fix the code in Solid for Windows if it's exist.

It's not simple...

Gilles

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--- Comment #13 from Maik Qualmann  ---
The main cause is probably missing Windows support in the Solid component.
DigiKam will not be notified that the drive / collection is no longer
available. The QFileSystemWatcher then triggers the scan of the collection and
removes all albums. I'm going to release a special Windows version on my GDrive
this evening with a workaround for testing. It would be nice if you would test
it and my guess would be confirmed.

Maik

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raphael.muell...@gmail.com changed:

   What|Removed |Added

 CC||raphael.muell...@gmail.com

--- Comment #12 from raphael.muell...@gmail.com ---
What is the current status about this?
I am having the same problem.

I launched digiKam yesterday afternoon at home and my network collection wasn't
there. It started the scan (which took the whole night) and in the morning the
collection looked good.
Then I put my notebook to standby, drove to work and now my collection is gone
again :(

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Maik Qualmann  changed:

   What|Removed |Added

 CC||stephan.kr...@t-online.de

--- Comment #11 from Maik Qualmann  ---
*** Bug 392088 has been marked as a duplicate of this bug. ***

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Maik Qualmann  changed:

   What|Removed |Added

 CC||hardy.pub...@gmail.com

--- Comment #10 from Maik Qualmann  ---
*** Bug 383711 has been marked as a duplicate of this bug. ***

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--- Comment #9 from Maik Qualmann  ---
I can not reproduce the problem here right now under a virtual Windows VM. If I
disconnect the network connection to the host computer, the images will not be
deleted in the database. A hard disconnect I can not reproduce with the virtual
machine. I'll test it at work tomorrow.

Maik

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--- Comment #8 from Maik Qualmann  ---
I think the problem is the QFileSystemWatcher. Actually, a well thought-out
idea and facility in digiKam, a file that is modified or deleted outside, is
updated right in the database. If the connection is lost on Windows, digiKam is
notified that there was a change in the directory and can not find any images
anymore and remove them from the database. It actually seems that under Linux
the QFileSystemWatcher does not send a message, even if a removable medium is
removed hard.

My 3 ideas:

1. We remove QFileSystemWatcher kommplett under Windows, which also gives it
further problems and we have installed workarounds (locked directories)

2. We only add new items or update changed ones, but do not delete any.

3. We test before we delete items or directories from the database, if a hidden
file in the root path is still readable.

Maik

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[digikam] [Bug 377849] albums disappear when the network is interrupted.

[weini]

https://bugs.kde.org/show_bug.cgi?id=377849

weini  changed:

   What|Removed |Added

Version|5.6.0   |5.7.0

--- Comment #6 from weini  ---
The albums of network folders will still disappear if the network connection is
lost.

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[digikam] [Bug 377849] albums disappear when the network is interrupted.

[bugzilla_noreply]

https://bugs.kde.org/show_bug.cgi?id=377849

caulier.gil...@gmail.com changed:

   What|Removed |Added

  Component|Database-Setup  |Database-Media

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--- Comment #5 from caulier.gil...@gmail.com ---
*** Bug 380971 has been marked as a duplicate of this bug. ***

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[digikam] [Bug 377849] albums disappear when the network is interrupted.

[Maik Qualmann]

https://bugs.kde.org/show_bug.cgi?id=377849

Maik Qualmann  changed:

   What|Removed |Added

Version|5.5.0   |5.6.0

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[digikam] [Bug 377849] albums disappear when the network is interrupted.

[Maik Qualmann]

https://bugs.kde.org/show_bug.cgi?id=377849

Maik Qualmann  changed:

   What|Removed |Added

 Ever confirmed|0   |1
 Status|RESOLVED|REOPENED
 Resolution|INVALID |---

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[digikam] [Bug 377849] albums disappear when the network is interrupted.

[Maik Qualmann]

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Maik Qualmann  changed:

   What|Removed |Added

 Resolution|--- |INVALID
 CC||metzping...@gmail.com
 Status|UNCONFIRMED |RESOLVED

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[digikam] [Bug 377849] albums disappear when the network is interrupted.

[weini]

https://bugs.kde.org/show_bug.cgi?id=377849

--- Comment #4 from weini  ---
Is there a solution or workaround for this problem?
Is this behavior known for the Windows installation?
Does this happen with other users?

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[digikam] [Bug 377849] albums disappear when the network is interrupted.

[weini]

https://bugs.kde.org/show_bug.cgi?id=377849

--- Comment #3 from weini  ---
i used mysql (MariaDB)
the database is local.

First I used sqlite as a database.
Not even the captions and keywords were saved.

Then I found on digikam.org this article -> https://www.digikam.org/node/219
" filesystems (check this FAQ entry). But, network "
http://www.sqlite.org/faq.html#q5
And i have read the sqlite can not deal with network paths.
Then I switched to mysql.

Now the entire assignments (labels and keywords) are saved and are not lost any
more, but the problem remains with the loading of the picture folders.

The problem occurs only to whom digiKam is opened and then the network
connection breaks. If the connection to the network from the beginning is
missing and then opens digiKam is all still there and the images are correctly
marked as unavailable.

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[digikam] [Bug 377849] albums disappear when the network is interrupted.

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--- Comment #2 from caulier.gil...@gmail.com ---
Which kind of database do you use ? mysql or sqlite ? Remote of local ?

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caulier.gil...@gmail.com changed:

   What|Removed |Added

  Component|general |Database-Setup

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caulier.gil...@gmail.com changed:

   What|Removed |Added

 CC||caulier.gil...@gmail.com
Summary|Alben verschwinden wenn |albums disappear when the
   |Netzwerk unterbrochen ist.  |network is interrupted.

--- Comment #1 from caulier.gil...@gmail.com ---
The albums that disappear are on network drives to digiKam open when the
network connection is lost, or when an error. (Eg when the computer wakes up
from standby, the network connection, and thus the network drive is not
immediately available).
Once the network drive is accessible again, digiKam will import the whole
collection again again.
Depending on the scope of the collections of images this may take several
hours.

Why Digikam does not recognize the image collection has already been read on
the network drive.

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