Problem with wdmcserverd

Hello!
I have wd my cloud ex2 ultra, found some problem with mycloud.com thumbnails and internal wdmcserverd daemon.
When i copy a lot of photos through afp to WD My Cloud storage, in /var/log/wdmcserver.log i found

2016-10-02T23:00:17.561816+03:00 di=WN6c1xtK60 6 MyCloudEX2Ultra wdmcserver: [11338:0xb4d3f460] Info Database is busy, waiting a second before retrying: ‘SELECT * FROM Files WHERE folderId = ? AND +isDeleted = 0 AND +isSystem = 0’.
2016-10-02T23:00:18.561948+03:00 di=WN6c1xtK60 6 MyCloudEX2Ultra wdmcserver: [11338:0xb4d3f460] Info Database is busy, waiting a second before retrying: ‘SELECT * FROM Files WHERE folderId = ? AND +isDeleted = 0 AND +isSystem = 0’.
2016-10-02T23:00:19.599698+03:00 di=WN6c1xtK60 6 MyCloudEX2Ultra wdmcserver: [11338:0xb4d3f460] Info Database is busy, waiting a second before retrying: ‘SELECT * FROM Files WHERE folderId = ? AND +isDeleted = 0 AND +isSystem = 0’.

and thats is permanently repeating. In mycloud.com, i can’t see thumbnails and full size photos, server returning 404 http status. When i restarting wdmcserverd through init.d script, then

2016-10-02T23:00:22.309711+03:00 di=WN6c1xtK60 6 MyCloudEX2Ultra wdmcserver: [26248:0xb5790000] Info (Build 21-Jun-2016 10:32:54) wdmcserver starting…
2016-10-02T23:00:22.413765+03:00 di=WN6c1xtK60 6 MyCloudEX2Ultra wdmcserver: [26248:0xb5790000] Info Loaded AutoTranscode P1: 96x
2016-10-02T23:00:22.413908+03:00 di=WN6c1xtK60 6 MyCloudEX2Ultra wdmcserver: [26248:0xb5790000] Info Loaded AutoTranscode P2: 1024x
2016-10-02T23:00:30.672020+03:00 di=WN6c1xtK60 6 MyCloudEX2Ultra wdmcserver: [26248:0xb4eff460] Info Crawling ‘/shares/Volume_1’
2016-10-02T23:03:22.157078+03:00 di=WN6c1xtK60 6 MyCloudEX2Ultra wdmcserver: [26248:0xb4eff460] Info Finished Crawling ‘/shares/Volume_1’ (219 items, 171.475 W 13.470 U 1.510 S 8.7%)
2016-10-02T23:03:29.117613+03:00 di=WN6c1xtK60 6 MyCloudEX2Ultra wdmcserver: [26248:0xb53a7460] Info AutoTranscoding P1: 96x
2016-10-02T23:03:33.134811+03:00 di=WN6c1xtK60 6 MyCloudEX2Ultra wdmcserver: [26248:0xb5067460] Info Database is busy, waiting a second before retrying: ‘UPDATE Transcodings SET status = ?, plugin = ?, lastUpdatedDate = ?, isDeleted = ? WHERE id = ?’.
2016-10-02T23:03:34.134849+03:00 di=WN6c1xtK60 6 MyCloudEX2Ultra wdmcserver: [26248:0xb5067460] Info Database is busy, waiting a second before retrying: ‘UPDATE Transcodings SET status = ?, plugin = ?, lastUpdatedDate = ?, isDeleted = ? WHERE id = ?’.
2016-10-02T23:03:35.134958+03:00 di=WN6c1xtK60 6 MyCloudEX2Ultra wdmcserver: [26248:0xb5067460] Info Database is busy, waiting a second before retrying: ‘UPDATE Transcodings SET status = ?, plugin = ?, lastUpdatedDate = ?, isDeleted = ? WHERE id = ?’.
2016-10-02T23:03:36.204145+03:00 di=WN6c1xtK60 6 MyCloudEX2Ultra wdmcserver: [26248:0xb5067460] Info Database is busy, waiting a second before retrying: ‘UPDATE Transcodings SET status = ?, plugin = ?, lastUpdatedDate = ?, isDeleted = ? WHERE id = ?’.
2016-10-02T23:04:11.115564+03:00 di=WN6c1xtK60 6 MyCloudEX2Ultra wdmcserver: [26248:0xb5067460] Info Transcoded 1 items (0.328 W 0.000 U 0.000 S 0.0%)
2016-10-02T23:04:11.484182+03:00 di=WN6c1xtK60 6 MyCloudEX2Ultra wdmcserver: [26248:0xb5067460] Info Transcoded 1 items (0.372 W 0.010 U 0.000 S 2.7%)
2016-10-02T23:04:11.814829+03:00 di=WN6c1xtK60 6 MyCloudEX2Ultra wdmcserver: [26248:0xb5067460] Info Transcoded 1 items (0.317 W 0.000 U 0.000 S 0.0%)
2016-10-02T23:04:12.200173+03:00 di=WN6c1xtK60 6 MyCloudEX2Ultra wdmcserver: [26248:0xb5067460] Info Transcoded 1 items (0.384 W 0.000 U 0.000 S 0.0%)
2016-10-02T23:04:12.590078+03:00 di=WN6c1xtK60 6 MyCloudEX2Ultra wdmcserver: [26248:0xb5067460] Info Transcoded 1 items (0.389 W 0.010 U 0.000 S 2.6%)
2016-10-02T23:04:12.978900+03:00 di=WN6c1xtK60 6 MyCloudEX2Ultra wdmcserver: [26248:0xb5067460] Info Transcoded 1 items (0.388 W 0.000 U 0.000 S 0.0%)
2016-10-02T23:04:13.371473+03:00 di=WN6c1xtK60 6 MyCloudEX2Ultra wdmcserver: [26248:0xb5067460] Info Transcoded 1 items (0.392 W 0.000 U 0.000 S 0.0%)

After thats, in mycloud.com successfully showing thumbnails and i can open full size photo preview for added photos.

If need for more debug info, i can test it and give advanced feedback for resolve problem.
Sorry for my english.

You may want to post your question/issue to the dedicated EX2 subforum where people more knowledgeable with the EX2 may be able to assist. This subforum (My Cloud) generally deals with the single bay My Cloud units.

https://community.wd.com/c/network-attached-storage/wd-my-cloud-ex2

Thanks! Moved.