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<div style="direction: ltr;font-family: Tahoma;color: #000000;font-size: 10pt;">Hello,
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<div>I am editing the wikipage of Tricircle: https://wiki.openstack.org/wiki/Tricircle#Cloud_Capacity_Expansion</div>
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<div>and want to upload a picture in the wikipage, https://wiki.openstack.org/w/index.php?title=Special:Upload&wpDestFile=Tricircle_usecase1.png</div>
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<div>then exception encountered, and not able to upload any pictures</div>
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<div>https://wiki.openstack.org/wiki/Special:Upload</div>
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<div><span style="font-family: Simsun; font-size: medium;">Exception encountered, of type "LocalFileLockError"</span><br style="font-family: Simsun; font-size: medium;">
<span style="font-family: Simsun; font-size: medium;">[42a77fc122dd851d294aba5b] /wiki/Special:Upload LocalFileLockError from line 1928 of /srv/mediawiki/w/includes/filerepo/file/LocalFile.php: Could not acquire lock for 'Tricircle_usecase1.png.'</span><br style="font-family: Simsun; font-size: medium;">
<span style="font-family: Simsun; font-size: medium;">Backtrace:</span><br style="font-family: Simsun; font-size: medium;">
<span style="font-family: Simsun; font-size: medium;">#0 /srv/mediawiki/w/includes/filerepo/file/LocalFile.php(1163): LocalFile->lock()</span><br style="font-family: Simsun; font-size: medium;">
<span style="font-family: Simsun; font-size: medium;">#1 /srv/mediawiki/w/includes/upload/UploadBase.php(730): LocalFile->upload(string, string, string, integer, array, boolean, User, array)</span><br style="font-family: Simsun; font-size: medium;">
<span style="font-family: Simsun; font-size: medium;">#2 /srv/mediawiki/w/includes/specials/SpecialUpload.php(535): UploadBase->performUpload(string, string, boolean, User, array)</span><br style="font-family: Simsun; font-size: medium;">
<span style="font-family: Simsun; font-size: medium;">#3 /srv/mediawiki/w/includes/specials/SpecialUpload.php(206): SpecialUpload->processUpload()</span><br style="font-family: Simsun; font-size: medium;">
<span style="font-family: Simsun; font-size: medium;">#4 /srv/mediawiki/w/includes/specialpage/SpecialPage.php(479): SpecialUpload->execute(NULL)</span><br style="font-family: Simsun; font-size: medium;">
<span style="font-family: Simsun; font-size: medium;">#5 /srv/mediawiki/w/includes/specialpage/SpecialPageFactory.php(576): SpecialPage->run(NULL)</span><br style="font-family: Simsun; font-size: medium;">
<span style="font-family: Simsun; font-size: medium;">#6 /srv/mediawiki/w/includes/MediaWiki.php(282): SpecialPageFactory::executePath(Title, RequestContext)</span><br style="font-family: Simsun; font-size: medium;">
<span style="font-family: Simsun; font-size: medium;">#7 /srv/mediawiki/w/includes/MediaWiki.php(745): MediaWiki->performRequest()</span><br style="font-family: Simsun; font-size: medium;">
<span style="font-family: Simsun; font-size: medium;">#8 /srv/mediawiki/w/includes/MediaWiki.php(519): MediaWiki->main()</span><br style="font-family: Simsun; font-size: medium;">
<span style="font-family: Simsun; font-size: medium;">#9 /srv/mediawiki/w/index.php(43): MediaWiki->run()</span><br style="font-family: Simsun; font-size: medium;">
<span style="font-family: Simsun; font-size: medium;">#10 {main}</span></div>
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<div><font face="Simsun" size="3">Best Regards</font></div>
<div><font face="Simsun" size="3">Chaoyi Huang(joehuang)</font></div>
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